Switch AuthorizationAttributes to batch and add AuthorizeBatch

Change AuthorizationAttributer.AuthorizationAttributes to take a slice
of resource ids and return policy.AttributesByID, so a single SQL
round-trip can load condition attributes for a whole batch. All
coredata implementations are migrated to a single
`WHERE id = ANY(@resource_ids::text[])` query that returns only the
rows it finds.

Authorizer gains:
  - AuthorizeBatch — all-or-nothing across a homogeneous (same entity
    type, same organization) resource set; rejects mixed entity types,
    mixed organizations, and empty batches with structured errors.
  - AuthorizeMulti — heterogeneous evaluation that returns one error
    per item and writes audit log entries in a single bulk insert.

The single-resource Authorize is rewired to delegate to AuthorizeBatch
so all paths share the same condition evaluation and audit logging.
recordAuditLog is split into buildAuditLogEntry plus a batch insert.

Tests cover the new batch and multi paths, mixed/empty/unsupported
resource cases, audit log batching, and dry-run behaviour.

Signed-off-by: Bryan Frimin <bryan@probo.com>

pkg/coredata/access_entry.go

@@ -24,6 +24,7 @@ import (
 	"github.com/jackc/pgx/v5"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 )
 
@@ -69,19 +70,42 @@ func (e AccessEntry) CursorKey(orderBy AccessEntryOrderField) page.CursorKey {
 	panic(fmt.Sprintf("unsupported order by: %s", orderBy))
 }
 
-func (e *AccessEntry) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id FROM access_entries WHERE id = $1 LIMIT 1;`
+func (e *AccessEntry) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM access_entries WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, e.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query access entry authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (e *AccessEntry) LoadByID(

pkg/coredata/access_entry_decision_history.go

@@ -16,7 +16,6 @@ package coredata
 
 import (
 	"context"
-	"errors"
 	"fmt"
 	"maps"
 	"time"
@@ -24,6 +23,7 @@ import (
 	"github.com/jackc/pgx/v5"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 )
 
 type (
@@ -92,19 +92,39 @@ INSERT INTO access_entry_decision_history (
 func (h *AccessEntryDecisionHistory) AuthorizationAttributes(
 	ctx context.Context,
 	conn pg.Querier,
-) (map[string]string, error) {
-	q := `SELECT organization_id FROM access_entry_decision_history WHERE id = $1 LIMIT 1;`
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM access_entry_decision_history WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, h.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot load authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (hs *AccessEntryDecisionHistories) LoadByEntryID(

pkg/coredata/access_review_campaign.go

@@ -24,6 +24,7 @@ import (
 	"github.com/jackc/pgx/v5"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 )
 
@@ -53,19 +54,42 @@ func (c AccessReviewCampaign) CursorKey(orderBy AccessReviewCampaignOrderField)
 	panic(fmt.Sprintf("unsupported order by: %s", orderBy))
 }
 
-func (c *AccessReviewCampaign) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id FROM access_review_campaigns WHERE id = $1 LIMIT 1;`
+func (c *AccessReviewCampaign) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM access_review_campaigns WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, c.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query access review campaign authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (c *AccessReviewCampaign) LoadByID(

pkg/coredata/access_source.go

@@ -24,6 +24,7 @@ import (
 	"github.com/jackc/pgx/v5"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 )
 
@@ -52,19 +53,42 @@ func (as AccessSource) CursorKey(orderBy AccessSourceOrderField) page.CursorKey
 	panic(fmt.Sprintf("unsupported order by: %s", orderBy))
 }
 
-func (as *AccessSource) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id FROM access_sources WHERE id = $1 LIMIT 1;`
+func (as *AccessSource) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM access_sources WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, as.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query access source authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (as *AccessSource) LoadByID(

pkg/coredata/agent_run.go

@@ -27,6 +27,7 @@ import (
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/agent"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 )
 
@@ -121,30 +122,42 @@ func (e AgentRun) CursorKey(orderBy AgentRunOrderField) page.CursorKey {
 	panic(fmt.Sprintf("unsupported order by: %s", orderBy))
 }
 
-func (e *AgentRun) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id FROM agent_runs WHERE id = @id LIMIT 1;`
+func (e *AgentRun) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM agent_runs WHERE id = ANY(@resource_ids::text[])`
 
-	args := pgx.StrictNamedArgs{"id": e.ID.String()}
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
+	}
 
 	rows, err := conn.Query(ctx, q, args)
 	if err != nil {
-		return nil, fmt.Errorf("cannot query agent run authorization attributes: %w", err)
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	type row struct {
-		OrganizationID gid.GID `db:"organization_id"`
-	}
+	defer rows.Close()
 
-	r, err := pgx.CollectExactlyOneRow(rows, pgx.RowToStructByName[row])
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
 		if err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
 		}
 
-		return nil, fmt.Errorf("cannot load agent run authorization attributes: %w", err)
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
 	}
 
-	return map[string]string{"organization_id": r.OrganizationID.String()}, nil
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (e *AgentRun) LoadByID(

pkg/coredata/applicability_statement.go

@@ -25,6 +25,7 @@ import (
 	"github.com/jackc/pgx/v5/pgconn"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 )
 
@@ -57,19 +58,42 @@ func (s ApplicabilityStatement) CursorKey(orderBy ApplicabilityStatementOrderFie
 	panic(fmt.Sprintf("unsupported order by: %s", orderBy))
 }
 
-func (s *ApplicabilityStatement) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id FROM applicability_statements WHERE id = $1 LIMIT 1;`
+func (s *ApplicabilityStatement) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM applicability_statements WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, s.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query applicability statement authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (sac *ApplicabilityStatement) LoadByID(

pkg/coredata/asset.go

@@ -24,6 +24,7 @@ import (
 	"github.com/jackc/pgx/v5"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 )
 
@@ -55,19 +56,42 @@ func (a *Asset) CursorKey(field AssetOrderField) page.CursorKey {
 }
 
 // AuthorizationAttributes returns the authorization attributes for policy evaluation.
-func (a *Asset) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id FROM assets WHERE id = $1 LIMIT 1;`
+func (a *Asset) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM assets WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, a.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query asset authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (a *Asset) LoadByID(

pkg/coredata/audit.go

@@ -24,6 +24,7 @@ import (
 	"github.com/jackc/pgx/v5"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 )
 
@@ -61,19 +62,42 @@ func (a *Audit) CursorKey(field AuditOrderField) page.CursorKey {
 }
 
 // AuthorizationAttributes returns the authorization attributes for policy evaluation.
-func (a *Audit) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id FROM audits WHERE id = $1 LIMIT 1;`
+func (a *Audit) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM audits WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, a.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query audit authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (a *Audit) LoadByID(

pkg/coredata/audit_log_entry.go

@@ -25,6 +25,7 @@ import (
 	"github.com/jackc/pgx/v5"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 )
 
@@ -53,19 +54,42 @@ func (e AuditLogEntry) CursorKey(orderBy AuditLogEntryOrderField) page.CursorKey
 	panic(fmt.Sprintf("unsupported order by: %s", orderBy))
 }
 
-func (e *AuditLogEntry) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id FROM audit_log_entries WHERE id = $1 LIMIT 1;`
+func (e *AuditLogEntry) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM audit_log_entries WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, e.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query audit log entry authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (e *AuditLogEntry) Insert(
@@ -121,6 +145,61 @@ VALUES (
 	return nil
 }
 
+// BulkInsert writes all entries to audit_log_entries in a single PostgreSQL
+// COPY operation. Used by the authorizer's batch path to fold N per-resource
+// INSERTs into a single round trip.
+func (es AuditLogEntries) BulkInsert(
+	ctx context.Context,
+	conn pg.Querier,
+	scope Scoper,
+) error {
+	if len(es) == 0 {
+		return nil
+	}
+
+	rows := make([][]any, 0, len(es))
+	for _, e := range es {
+		rows = append(
+			rows,
+			[]any{
+				e.ID,
+				scope.GetTenantID(),
+				e.OrganizationID,
+				e.ActorID,
+				e.ActorType,
+				e.Action,
+				e.ResourceType,
+				e.ResourceID,
+				e.Metadata,
+				e.CreatedAt,
+			},
+		)
+	}
+
+	_, err := conn.CopyFrom(
+		ctx,
+		pgx.Identifier{"audit_log_entries"},
+		[]string{
+			"id",
+			"tenant_id",
+			"organization_id",
+			"actor_id",
+			"actor_type",
+			"action",
+			"resource_type",
+			"resource_id",
+			"metadata",
+			"created_at",
+		},
+		pgx.CopyFromRows(rows),
+	)
+	if err != nil {
+		return fmt.Errorf("cannot bulk insert audit log entries: %w", err)
+	}
+
+	return nil
+}
+
 func (e *AuditLogEntry) LoadByID(
 	ctx context.Context,
 	conn pg.Querier,

pkg/coredata/compliance_external_url.go

@@ -24,6 +24,7 @@ import (
 	"github.com/jackc/pgx/v5"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 )
 
@@ -53,19 +54,42 @@ func (c ComplianceExternalURL) CursorKey(orderBy ComplianceExternalURLOrderField
 	panic(fmt.Sprintf("unsupported order by: %s", orderBy))
 }
 
-func (c *ComplianceExternalURL) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id FROM compliance_external_urls WHERE id = $1 LIMIT 1;`
+func (c *ComplianceExternalURL) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM compliance_external_urls WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, c.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query compliance external URL authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (c *ComplianceExternalURL) LoadByID(

pkg/coredata/compliance_framework.go

@@ -25,6 +25,7 @@ import (
 	"github.com/jackc/pgx/v5/pgconn"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 )
 
@@ -56,19 +57,42 @@ func (c ComplianceFramework) CursorKey(orderBy ComplianceFrameworkOrderField) pa
 	panic(fmt.Sprintf("unsupported order by: %s", orderBy))
 }
 
-func (c *ComplianceFramework) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id FROM compliance_frameworks WHERE id = $1 LIMIT 1;`
+func (c *ComplianceFramework) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM compliance_frameworks WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, c.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query compliance framework authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (c *ComplianceFramework) LoadByID(

pkg/coredata/connector.go

@@ -28,6 +28,7 @@ import (
 	"go.probo.inc/probo/pkg/connector"
 	"go.probo.inc/probo/pkg/crypto/cipher"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 )
 
@@ -85,19 +86,42 @@ func (c *Connector) CursorKey(orderBy ConnectorOrderField) page.CursorKey {
 }
 
 // AuthorizationAttributes returns the authorization attributes for policy evaluation.
-func (c *Connector) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id FROM connectors WHERE id = $1 LIMIT 1;`
+func (c *Connector) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM connectors WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, c.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query connector authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (c *Connectors) LoadAllByOrganizationIDProtocolAndProvider(

pkg/coredata/control.go

@@ -25,6 +25,7 @@ import (
 	"github.com/jackc/pgx/v5/pgconn"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 )
 
@@ -58,19 +59,42 @@ func (c Control) CursorKey(orderBy ControlOrderField) page.CursorKey {
 }
 
 // AuthorizationAttributes returns the authorization attributes for policy evaluation.
-func (c *Control) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id FROM controls WHERE id = $1 LIMIT 1;`
+func (c *Control) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM controls WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, c.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query control authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (c *Controls) CountByDocumentID(

pkg/coredata/cookie_banner.go

@@ -25,6 +25,7 @@ import (
 	"github.com/jackc/pgx/v5/pgconn"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 )
 
@@ -57,19 +58,42 @@ func (b *CookieBanner) CursorKey(field CookieBannerOrderField) page.CursorKey {
 	panic(fmt.Sprintf("unsupported order by: %s", field))
 }
 
-func (b *CookieBanner) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id FROM cookie_banners WHERE id = $1 LIMIT 1;`
+func (b *CookieBanner) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM cookie_banners WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, b.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query cookie banner authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (b *CookieBanner) LoadByID(

pkg/coredata/cookie_banner_translation.go

@@ -26,6 +26,7 @@ import (
 	"github.com/jackc/pgx/v5/pgconn"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 )
 
 type (
@@ -42,19 +43,42 @@ type (
 	CookieBannerTranslations []*CookieBannerTranslation
 )
 
-func (t *CookieBannerTranslation) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id FROM cookie_banner_translations WHERE id = $1 LIMIT 1;`
+func (t *CookieBannerTranslation) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM cookie_banner_translations WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, t.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query cookie banner translation authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (t *CookieBannerTranslation) LoadByID(

pkg/coredata/cookie_banner_version.go

@@ -25,6 +25,7 @@ import (
 	"github.com/jackc/pgx/v5"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 )
 
@@ -80,19 +81,42 @@ func (v *CookieBannerVersion) CursorKey(field CookieBannerVersionOrderField) pag
 	panic(fmt.Sprintf("unsupported order by: %s", field))
 }
 
-func (v *CookieBannerVersion) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id FROM cookie_banner_versions WHERE id = $1 LIMIT 1;`
+func (v *CookieBannerVersion) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM cookie_banner_versions WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, v.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query cookie banner version authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (v *CookieBannerVersion) GetSnapshot() (CookieBannerVersionSnapshot, error) {

pkg/coredata/cookie_category.go

@@ -26,6 +26,7 @@ import (
 	"github.com/jackc/pgx/v5/pgconn"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 )
 
@@ -82,19 +83,42 @@ func (c *CookieCategory) CursorKey(field CookieCategoryOrderField) page.CursorKe
 	panic(fmt.Sprintf("unsupported order by: %s", field))
 }
 
-func (c *CookieCategory) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id FROM cookie_categories WHERE id = $1 LIMIT 1;`
+func (c *CookieCategory) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM cookie_categories WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, c.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query cookie category authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (c *CookieCategory) LoadByID(

pkg/coredata/cookie_consent_record.go

@@ -25,6 +25,7 @@ import (
 	"github.com/jackc/pgx/v5"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 )
 
@@ -58,19 +59,42 @@ func (r *CookieConsentRecord) CursorKey(field CookieConsentRecordOrderField) pag
 	panic(fmt.Sprintf("unsupported order by: %s", field))
 }
 
-func (r *CookieConsentRecord) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id FROM cookie_consent_records WHERE id = $1 LIMIT 1;`
+func (r *CookieConsentRecord) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM cookie_consent_records WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, r.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query consent record authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (r *CookieConsentRecords) LoadByCookieBannerID(

pkg/coredata/custom_domain.go

@@ -27,6 +27,7 @@ import (
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/crypto/cipher"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 )
 
@@ -68,19 +69,42 @@ func NewCustomDomain(tenantID gid.TenantID, domain string) *CustomDomain {
 }
 
 // AuthorizationAttributes returns the authorization attributes for policy evaluation.
-func (cd *CustomDomain) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id FROM custom_domains WHERE id = $1 LIMIT 1;`
+func (cd *CustomDomain) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM custom_domains WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, cd.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query custom domain authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (cd *CustomDomain) CursorKey(field CustomDomainOrderField) page.CursorKey {

pkg/coredata/data_protection_impact_assessment.go

@@ -25,6 +25,7 @@ import (
 	"github.com/jackc/pgx/v5/pgconn"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 )
 
@@ -163,19 +164,42 @@ func (dpia *DataProtectionImpactAssessment) CursorKey(field DataProtectionImpact
 }
 
 // AuthorizationAttributes returns the authorization attributes for policy evaluation.
-func (dpia *DataProtectionImpactAssessment) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id FROM processing_activity_data_protection_impact_assessments WHERE id = $1 LIMIT 1;`
+func (dpia *DataProtectionImpactAssessment) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM processing_activity_data_protection_impact_assessments WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, dpia.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query data protection impact assessment authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (dpias *DataProtectionImpactAssessments) CountByOrganizationID(

pkg/coredata/datum.go

@@ -24,6 +24,7 @@ import (
 	"github.com/jackc/pgx/v5"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 )
 
@@ -55,19 +56,42 @@ func (d *Datum) CursorKey(field DatumOrderField) page.CursorKey {
 }
 
 // AuthorizationAttributes returns the authorization attributes for policy evaluation.
-func (d *Datum) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id FROM data WHERE id = $1 LIMIT 1;`
+func (d *Datum) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM data WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, d.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query datum authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (d *Datum) LoadByID(

pkg/coredata/document.go

@@ -24,6 +24,7 @@ import (
 	"github.com/jackc/pgx/v5"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/mail"
 	"go.probo.inc/probo/pkg/page"
 )
@@ -65,26 +66,42 @@ func (p Document) CursorKey(orderBy DocumentOrderField) page.CursorKey {
 }
 
 // AuthorizationAttributes returns the authorization attributes for policy evaluation.
-func (d *Document) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `
-SELECT organization_id
-FROM documents
-WHERE id = $1
-LIMIT 1;
-`
+func (d *Document) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM documents WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, d.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query document authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
 			"organization_id": organizationID.String(),
-	}, nil
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (p *Document) LoadByID(

pkg/coredata/document_version.go

@@ -25,6 +25,7 @@ import (
 	"github.com/jackc/pgx/v5/pgconn"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 )
 
@@ -53,27 +54,42 @@ type (
 )
 
 // AuthorizationAttributes returns the authorization attributes for policy evaluation.
-func (dv *DocumentVersion) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `
-SELECT organization_id
-FROM document_versions
-WHERE id = $1
-LIMIT 1;
-`
+func (dv *DocumentVersion) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM document_versions WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-
-	if err := conn.QueryRow(ctx, q, dv.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query document version authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
 			"organization_id": organizationID.String(),
-	}, nil
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (dv *DocumentVersions) LoadByDocumentID(

pkg/coredata/document_version_approval_decision.go

@@ -25,6 +25,7 @@ import (
 	"github.com/jackc/pgx/v5/pgconn"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 )
 
@@ -54,19 +55,42 @@ func (d DocumentVersionApprovalDecision) CursorKey(orderBy DocumentVersionApprov
 	panic(fmt.Sprintf("unsupported order by: %s", orderBy))
 }
 
-func (d *DocumentVersionApprovalDecision) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id FROM document_version_approval_decisions WHERE id = $1 LIMIT 1;`
+func (d *DocumentVersionApprovalDecision) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM document_version_approval_decisions WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, d.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query document version approval decision authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (d *DocumentVersionApprovalDecision) LoadByID(

pkg/coredata/document_version_approval_quorum.go

@@ -25,6 +25,7 @@ import (
 	"github.com/jackc/pgx/v5/pgconn"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 )
 
@@ -50,19 +51,42 @@ func (q DocumentVersionApprovalQuorum) CursorKey(orderBy DocumentVersionApproval
 	panic(fmt.Sprintf("unsupported order by: %s", orderBy))
 }
 
-func (q *DocumentVersionApprovalQuorum) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	query := `SELECT organization_id FROM document_version_approval_quorums WHERE id = $1 LIMIT 1;`
+func (q *DocumentVersionApprovalQuorum) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	query := `SELECT id, organization_id FROM document_version_approval_quorums WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, query, q.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query approval quorum authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, query, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (q *DocumentVersionApprovalQuorum) LoadByID(

pkg/coredata/document_version_signature.go

@@ -25,6 +25,7 @@ import (
 	"github.com/jackc/pgx/v5/pgconn"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/mail"
 	"go.probo.inc/probo/pkg/page"
 )
@@ -64,19 +65,42 @@ func (pvs DocumentVersionSignature) CursorKey(orderBy DocumentVersionSignatureOr
 }
 
 // AuthorizationAttributes returns the authorization attributes for policy evaluation.
-func (dvs *DocumentVersionSignature) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id FROM document_version_signatures WHERE id = $1 LIMIT 1;`
+func (dvs *DocumentVersionSignature) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM document_version_signatures WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, dvs.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query document version signature authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (pvs *DocumentVersionSignature) LoadByDocumentVersionIDAndSignatory(

pkg/coredata/email.go

@@ -23,6 +23,7 @@ import (
 	"github.com/jackc/pgx/v5"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/mail"
 )
 
@@ -65,8 +66,46 @@ var (
 
 // AuthorizationAttributes returns the authorization attributes for policy evaluation.
 // Email is identity-scoped (not org-scoped), so it returns an empty map.
-func (e *Email) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	return map[string]string{}, nil
+func (e *Email) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `
+SELECT
+    id
+FROM
+    emails
+WHERE
+    id = ANY(@resource_ids::text[])
+`
+
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
+	}
+
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query email authorization attributes: %w", err)
+	}
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID, len(resourceIDs))
+	for rows.Next() {
+		var id gid.GID
+		err = rows.Scan(&id)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan email authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{}
+	}
+
+	if err = rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate email authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func NewEmail(

pkg/coredata/evidence.go

@@ -25,6 +25,7 @@ import (
 	"github.com/jackc/pgx/v5/pgconn"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 )
 
@@ -59,19 +60,42 @@ func (e Evidence) CursorKey(orderBy EvidenceOrderField) page.CursorKey {
 }
 
 // AuthorizationAttributes returns the authorization attributes for policy evaluation.
-func (e *Evidence) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id FROM evidences WHERE id = $1 LIMIT 1;`
+func (e *Evidence) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM evidences WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, e.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query evidence authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (e Evidence) Upsert(

pkg/coredata/export_job.go

@@ -25,6 +25,7 @@ import (
 	"github.com/jackc/pgx/v5"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/mail"
 )
 
@@ -63,19 +64,42 @@ var (
 )
 
 // AuthorizationAttributes returns the authorization attributes for policy evaluation.
-func (ej *ExportJob) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id FROM export_jobs WHERE id = $1 LIMIT 1;`
+func (ej *ExportJob) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM export_jobs WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, ej.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query export job authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (ej *ExportJob) Insert(

pkg/coredata/file.go

@@ -26,6 +26,7 @@ import (
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/filemanager"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 )
 
 type (
@@ -65,19 +66,42 @@ func (f *File) GetMimeType() string {
 var _ filemanager.File = (*File)(nil)
 
 // AuthorizationAttributes returns the authorization attributes for policy evaluation.
-func (f *File) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id FROM files WHERE id = $1 LIMIT 1;`
+func (f *File) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM files WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, f.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query file authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (f *File) LoadByID(

pkg/coredata/finding.go

@@ -24,6 +24,7 @@ import (
 	"github.com/jackc/pgx/v5"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 )
 
@@ -72,19 +73,42 @@ func (f *Finding) CursorKey(field FindingOrderField) page.CursorKey {
 	panic(fmt.Sprintf("unsupported order by: %s", field))
 }
 
-func (f *Finding) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id FROM findings WHERE id = $1 LIMIT 1;`
+func (f *Finding) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM findings WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, f.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query finding authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (f *Finding) LoadByID(

pkg/coredata/framework.go

@@ -25,6 +25,7 @@ import (
 	"github.com/jackc/pgx/v5/pgconn"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 )
 
@@ -53,20 +54,49 @@ func (f *Framework) CursorKey(orderBy FrameworkOrderField) page.CursorKey {
 	panic(fmt.Sprintf("unsupported order by: %s", orderBy))
 }
 
-// AuthorizationAttributes returns the authorization attributes for policy evaluation.
-func (f *Framework) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id FROM frameworks WHERE id = $1 LIMIT 1;`
+func (f *Framework) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	frameworkIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `
+SELECT
+    id,
+    organization_id
+FROM
+    frameworks
+WHERE
+    id = ANY(@framework_ids::text[])
+`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, f.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"framework_ids": frameworkIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query framework authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query framework authorization attributes batch: %w", err)
+	}
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var (
+			frameworkID    gid.GID
+			organizationID gid.GID
+		)
+		if err := rows.Scan(&frameworkID, &organizationID); err != nil {
+			return nil, fmt.Errorf("cannot scan framework authorization attributes batch: %w", err)
+		}
+		attrsByID[frameworkID] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate framework authorization attributes batch: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	return attrsByID, nil
 }
 
 func (f *Frameworks) CountByOrganizationID(
@@ -100,6 +130,22 @@ WHERE
 	return count, nil
 }
 
+func uniqueGIDs(values []gid.GID) []gid.GID {
+	set := make(map[gid.GID]struct{}, len(values))
+	unique := make([]gid.GID, 0, len(values))
+
+	for _, value := range values {
+		if _, ok := set[value]; ok {
+			continue
+		}
+
+		set[value] = struct{}{}
+		unique = append(unique, value)
+	}
+
+	return unique
+}
+
 func (f *Frameworks) LoadByOrganizationID(
 	ctx context.Context,
 	conn pg.Querier,

pkg/coredata/identity.go

@@ -25,6 +25,7 @@ import (
 	"github.com/jackc/pgx/v5/pgconn"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/mail"
 	"go.probo.inc/probo/pkg/page"
 )
@@ -143,7 +144,11 @@ LIMIT 1;
 
 // AuthorizationAttributes loads the minimal authorization attributes for policy condition evaluation.
 // It is intentionally lightweight and does not populate the Identity struct.
-func (i *Identity) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
+func (i *Identity) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
 	q := `
 SELECT
     id,
@@ -151,25 +156,41 @@ SELECT
 FROM
     identities
 WHERE
-    id = $1
+    id = ANY(@resource_ids::text[])
 `
 
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
+	}
+
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query identity authorization attributes: %w", err)
+	}
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID, len(resourceIDs))
+	for rows.Next() {
 		var (
 			id           gid.GID
 			emailAddress string
 		)
-	if err := conn.QueryRow(ctx, q, i.ID).Scan(&id, &emailAddress); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+
+		if err := rows.Scan(&id, &emailAddress); err != nil {
+			return nil, fmt.Errorf("cannot scan identity authorization attributes: %w", err)
 		}
 
-		return nil, fmt.Errorf("cannot query identity iam attributes: %w", err)
-	}
-
-	return map[string]string{
+		attrsByID[id] = policy.Attributes{
 			"identity_id": id.String(),
 			"email":       emailAddress,
-	}, nil
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate identity authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (i *Identity) Insert(

pkg/coredata/invitation.go

@@ -24,6 +24,7 @@ import (
 	"github.com/jackc/pgx/v5"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 )
 
@@ -142,34 +143,56 @@ WHERE
 
 // AuthorizationAttributes loads the minimal authorization attributes for policy condition evaluation.
 // It is intentionally lightweight and does not populate the Invitation struct.
-func (i *Invitation) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
+func (i *Invitation) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
 	q := `
 SELECT
-    email, organization_id
+    id,
+    email,
+    organization_id
 FROM
     iam_invitations
 WHERE
-    id = $1
-LIMIT 1;
+    id = ANY(@resource_ids::text[])
 `
 
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
+	}
+
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query invitation authorization attributes: %w", err)
+	}
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID, len(resourceIDs))
+	for rows.Next() {
 		var (
+			id             gid.GID
 			email          string
 			organizationID gid.GID
 		)
 
-	if err := conn.QueryRow(ctx, q, i.ID).Scan(&email, &organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+		err = rows.Scan(&id, &email, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan invitation authorization attributes: %w", err)
 		}
 
-		return nil, fmt.Errorf("cannot query invitation iam attributes: %w", err)
-	}
-
-	return map[string]string{
+		attrsByID[id] = policy.Attributes{
 			"email":           email,
 			"organization_id": organizationID.String(),
-	}, nil
+		}
+	}
+
+	if err = rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate invitation authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (i *Invitation) Update(ctx context.Context, conn pg.Tx, scope Scoper) error {

pkg/coredata/mailing_list.go

@@ -24,6 +24,7 @@ import (
 	"github.com/jackc/pgx/v5"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/mail"
 )
 
@@ -35,19 +36,42 @@ type MailingList struct {
 	UpdatedAt      time.Time  `db:"updated_at"`
 }
 
-func (ml *MailingList) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id FROM mailing_lists WHERE id = $1 LIMIT 1;`
+func (ml *MailingList) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM mailing_lists WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, ml.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query mailing list authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (ml *MailingList) LoadByID(

pkg/coredata/mailing_list_subscriber.go

@@ -25,6 +25,7 @@ import (
 	"github.com/jackc/pgx/v5/pgconn"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/mail"
 	"go.probo.inc/probo/pkg/page"
 )
@@ -44,19 +45,42 @@ type (
 	MailingListSubscribers []*MailingListSubscriber
 )
 
-func (cns *MailingListSubscriber) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id FROM mailing_list_subscribers WHERE id = $1 LIMIT 1;`
+func (cns *MailingListSubscriber) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM mailing_list_subscribers WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, cns.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query mailing list subscriber authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (cns *MailingListSubscriber) CursorKey(orderBy MailingListSubscriberOrderField) page.CursorKey {

pkg/coredata/mailing_list_update.go

@@ -24,6 +24,7 @@ import (
 	"github.com/jackc/pgx/v5"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 )
 
@@ -53,19 +54,42 @@ func (mlu *MailingListUpdate) CursorKey(orderBy MailingListUpdateOrderField) pag
 	panic(fmt.Sprintf("unsupported order by: %s", orderBy))
 }
 
-func (mlu *MailingListUpdate) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id FROM mailing_list_updates WHERE id = $1 LIMIT 1;`
+func (mlu *MailingListUpdate) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM mailing_list_updates WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, mlu.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query mailing list update authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (mlu *MailingListUpdate) Insert(ctx context.Context, conn pg.Tx, scope Scoper) error {

pkg/coredata/measure.go

@@ -25,6 +25,7 @@ import (
 	"github.com/jackc/pgx/v5/pgconn"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 )
 
@@ -56,19 +57,42 @@ func (m Measure) CursorKey(orderBy MeasureOrderField) page.CursorKey {
 }
 
 // AuthorizationAttributes returns the authorization attributes for policy evaluation.
-func (m *Measure) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id FROM measures WHERE id = $1 LIMIT 1;`
+func (m *Measure) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM measures WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, m.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query measure authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (m *Measures) CountByRiskID(

pkg/coredata/membership.go

@@ -25,6 +25,7 @@ import (
 	"github.com/jackc/pgx/v5/pgconn"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 )
 
@@ -199,42 +200,64 @@ WHERE
 	return nil
 }
 
-func (m *Membership) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
+func (m *Membership) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
 	q := `
 SELECT
+    id,
     identity_id,
     organization_id,
     role
 FROM
     iam_memberships
 WHERE
-    id = $1
-LIMIT 1;
+    id = ANY(@resource_ids::text[])
 `
 
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
+	}
+
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query membership authorization attributes: %w", err)
+	}
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID, len(resourceIDs))
+	for rows.Next() {
 		var (
+			id             gid.GID
 			identityID     gid.GID
 			organizationID gid.GID
 			role           MembershipRole
 		)
 
-	if err := conn.QueryRow(ctx, q, m.ID).Scan(
+		err = rows.Scan(
+			&id,
 			&identityID,
 			&organizationID,
 			&role,
-	); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+		)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan membership authorization attributes: %w", err)
 		}
 
-		return nil, fmt.Errorf("cannot query membership iam attributes: %w", err)
-	}
-
-	return map[string]string{
+		attrsByID[id] = policy.Attributes{
 			"identity_id":     identityID.String(),
 			"organization_id": organizationID.String(),
 			"role":            role.String(),
-	}, nil
+		}
+	}
+
+	if err = rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate membership authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (m *Membership) LoadByIdentityAndOrg(

pkg/coredata/membership_profile.go

@@ -25,6 +25,7 @@ import (
 	"github.com/jackc/pgx/v5/pgconn"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/mail"
 	"go.probo.inc/probo/pkg/page"
 )
@@ -87,26 +88,56 @@ func (p MembershipProfile) CursorKey(orderBy MembershipProfileOrderField) page.C
 	panic(fmt.Sprintf("unsupported order by: %s", orderBy))
 }
 
-func (p *MembershipProfile) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id, identity_id FROM iam_membership_profiles WHERE id = $1 LIMIT 1;`
+func (p *MembershipProfile) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `
+SELECT
+    id,
+    organization_id,
+    identity_id
+FROM
+    iam_membership_profiles
+WHERE
+    id = ANY(@resource_ids::text[])
+`
 
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
+	}
+
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query profile authorization attributes: %w", err)
+	}
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID, len(resourceIDs))
+	for rows.Next() {
 		var (
+			id             gid.GID
 			organizationID gid.GID
 			identityID     gid.GID
 		)
 
-	if err := conn.QueryRow(ctx, q, p.ID).Scan(&organizationID, &identityID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+		err = rows.Scan(&id, &organizationID, &identityID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan profile authorization attributes: %w", err)
 		}
 
-		return nil, fmt.Errorf("cannot query profile authorization attributes: %w", err)
-	}
-
-	return map[string]string{
+		attrsByID[id] = policy.Attributes{
 			"organization_id": organizationID.String(),
 			"identity_id":     identityID.String(),
-	}, nil
+		}
+	}
+
+	if err = rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate profile authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (p *MembershipProfile) LoadByID(

pkg/coredata/oauth2_client.go

@@ -25,6 +25,7 @@ import (
 	"github.com/jackc/pgx/v5"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 	"go.probo.inc/probo/pkg/uri"
 )
@@ -72,32 +73,55 @@ func (c *OAuth2Client) CursorKey(orderBy OAuth2ClientOrderField) page.CursorKey
 	panic(fmt.Sprintf("unsupported order by: %s", orderBy))
 }
 
-func (c *OAuth2Client) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
+func (c *OAuth2Client) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
 	q := `
 SELECT
+    id,
     organization_id
 FROM
     iam_oauth2_clients
 WHERE
-	id = $1
-LIMIT 1;
+    id = ANY(@resource_ids::text[])
 `
 
-	var organizationID *gid.GID
-	if err := conn.QueryRow(ctx, q, c.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
 		return nil, fmt.Errorf("cannot query oauth2 client authorization attributes: %w", err)
 	}
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID, len(resourceIDs))
+	for rows.Next() {
+		var (
+			id             gid.GID
+			organizationID *gid.GID
+		)
+
+		err = rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan oauth2 client authorization attributes: %w", err)
+		}
 
 		attrs := make(map[string]string)
 		if organizationID != nil {
 			attrs["organization_id"] = organizationID.String()
 		}
+		attrsByID[id] = attrs
+	}
 
-	return attrs, nil
+	if err = rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate oauth2 client authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (c *OAuth2Client) LoadByID(

pkg/coredata/oauth2_consent.go

@@ -24,6 +24,7 @@ import (
 	"github.com/jackc/pgx/v5"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 	"go.probo.inc/probo/pkg/uri"
 )
@@ -58,31 +59,56 @@ func (c *OAuth2Consent) CursorKey(orderBy OAuth2ConsentOrderField) page.CursorKe
 	panic(fmt.Sprintf("unsupported order by: %s", orderBy))
 }
 
-func (c *OAuth2Consent) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
+func (c *OAuth2Consent) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
 	q := `
 SELECT
+    id,
     identity_id,
     session_id
 FROM
     iam_oauth2_consents
 WHERE
-	id = $1
-LIMIT 1;
+    id = ANY(@resource_ids::text[])
 `
 
-	var identityID, sessionID gid.GID
-	if err := conn.QueryRow(ctx, q, c.ID).Scan(&identityID, &sessionID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query oauth2_consent authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query oauth2 consent authorization attributes: %w", err)
+	}
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID, len(resourceIDs))
+	for rows.Next() {
+		var (
+			id         gid.GID
+			identityID gid.GID
+			sessionID  gid.GID
+		)
+
+		err = rows.Scan(&id, &identityID, &sessionID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan oauth2 consent authorization attributes: %w", err)
 		}
 
-	return map[string]string{
+		attrsByID[id] = policy.Attributes{
 			"identity_id": identityID.String(),
 			"session_id":  sessionID.String(),
-	}, nil
+		}
+	}
+
+	if err = rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate oauth2 consent authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (c *OAuth2Consent) LoadByID(

pkg/coredata/obligation.go

@@ -24,6 +24,7 @@ import (
 	"github.com/jackc/pgx/v5"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 )
 
@@ -63,19 +64,42 @@ func (o *Obligation) CursorKey(field ObligationOrderField) page.CursorKey {
 	panic(fmt.Sprintf("unsupported order by: %s", field))
 }
 
-func (o *Obligation) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id FROM obligations WHERE id = $1 LIMIT 1;`
+func (o *Obligation) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM obligations WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, o.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query obligation authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (o *Obligation) LoadByID(

pkg/coredata/organization.go

@@ -24,6 +24,7 @@ import (
 	"github.com/jackc/pgx/v5"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 )
 
@@ -46,19 +47,41 @@ type (
 	Organizations []*Organization
 )
 
-func (o *Organization) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT id FROM organizations WHERE id = $1 LIMIT 1;`
+func (o *Organization) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id FROM organizations WHERE id = ANY(@resource_ids::text[])`
 
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
+	}
+
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
+	}
+
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
 		var id gid.GID
-	if err := conn.QueryRow(ctx, q, o.ID).Scan(&id); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+		if err := rows.Scan(&id); err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
 		}
 
-		return nil, fmt.Errorf("cannot query organization authorization attributes: %w", err)
+		attrsByID[id] = policy.Attributes{
+			"organization_id": id.String(),
+		}
 	}
 
-	return map[string]string{"organization_id": o.ID.String()}, nil
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (o Organization) CursorKey(orderBy OrganizationOrderField) page.CursorKey {

pkg/coredata/personal_api_key.go

@@ -23,6 +23,7 @@ import (
 	"github.com/jackc/pgx/v5"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 )
 
@@ -93,19 +94,51 @@ LIMIT 1;
 	return nil
 }
 
-func (a *PersonalAPIKey) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := "SELECT identity_id FROM iam_personal_api_keys WHERE id = $1 LIMIT 1;"
+func (a *PersonalAPIKey) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `
+SELECT
+    id,
+    identity_id
+FROM
+    iam_personal_api_keys
+WHERE
+    id = ANY(@resource_ids::text[])
+`
 
-	var identityID gid.GID
-	if err := conn.QueryRow(ctx, q, a.ID).Scan(&identityID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query personal api key iam attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query personal api key authorization attributes: %w", err)
+	}
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID, len(resourceIDs))
+	for rows.Next() {
+		var (
+			id         gid.GID
+			identityID gid.GID
+		)
+
+		err = rows.Scan(&id, &identityID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan personal api key authorization attributes: %w", err)
 		}
 
-	return map[string]string{"identity_id": identityID.String()}, nil
+		attrsByID[id] = policy.Attributes{"identity_id": identityID.String()}
+	}
+
+	if err = rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate personal api key authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (a *PersonalAPIKeys) LoadByIdentityID(

pkg/coredata/processing_activities.go

@@ -24,6 +24,7 @@ import (
 	"github.com/jackc/pgx/v5"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 )
 
@@ -176,19 +177,42 @@ func (p *ProcessingActivity) CursorKey(field ProcessingActivityOrderField) page.
 	panic(fmt.Sprintf("unsupported order by: %s", field))
 }
 
-func (p *ProcessingActivity) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id FROM processing_activities WHERE id = $1 LIMIT 1;`
+func (p *ProcessingActivity) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM processing_activities WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, p.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query processing activity authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (p *ProcessingActivity) LoadByID(

pkg/coredata/report.go

@@ -24,6 +24,7 @@ import (
 	"github.com/jackc/pgx/v5"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 )
 
@@ -42,19 +43,42 @@ type (
 	Reports []*Report
 )
 
-func (r *Report) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id FROM reports WHERE id = $1 LIMIT 1;`
+func (r *Report) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM reports WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, r.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query report authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (r *Report) LoadByID(

pkg/coredata/rights_requests.go

@@ -24,6 +24,7 @@ import (
 	"github.com/jackc/pgx/v5"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 )
 
@@ -61,19 +62,42 @@ func (rr *RightsRequest) CursorKey(field RightsRequestOrderField) page.CursorKey
 }
 
 // AuthorizationAttributes returns the authorization attributes for policy evaluation.
-func (rr *RightsRequest) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id FROM rights_requests WHERE id = $1 LIMIT 1;`
+func (rr *RightsRequest) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM rights_requests WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, rr.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query rights request authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (rr *RightsRequest) LoadByID(

pkg/coredata/risk.go

@@ -24,6 +24,7 @@ import (
 	"github.com/jackc/pgx/v5"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 )
 
@@ -182,19 +183,42 @@ func (r *Risk) CursorKey(orderBy RiskOrderField) page.CursorKey {
 	panic(fmt.Sprintf("unsupported order by: %s", orderBy))
 }
 
-func (r *Risk) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id FROM risks WHERE id = $1 LIMIT 1;`
+func (r *Risk) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM risks WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, r.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query risk authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (r *Risks) CountByMeasureID(

pkg/coredata/risk_assessment.go

@@ -24,6 +24,7 @@ import (
 	"github.com/jackc/pgx/v5"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 )
 
@@ -51,19 +52,42 @@ func (ra *RiskAssessment) CursorKey(orderBy RiskAssessmentOrderField) page.Curso
 	panic(fmt.Sprintf("unsupported order by: %s", orderBy))
 }
 
-func (ra *RiskAssessment) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id FROM risk_assessments WHERE id = $1 LIMIT 1;`
+func (ra *RiskAssessment) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM risk_assessments WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, ra.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query risk assessment authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (ra *RiskAssessments) CountByOrganizationID(

pkg/coredata/risk_assessment_node.go

@@ -25,6 +25,7 @@ import (
 	"github.com/jackc/pgx/v5/pgconn"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 )
 
@@ -53,19 +54,42 @@ func (n *RiskAssessmentNode) CursorKey(orderBy RiskAssessmentNodeOrderField) pag
 	panic(fmt.Sprintf("unsupported order by: %s", orderBy))
 }
 
-func (n *RiskAssessmentNode) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id FROM risk_assessment_nodes WHERE id = $1 LIMIT 1;`
+func (n *RiskAssessmentNode) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM risk_assessment_nodes WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, n.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query risk assessment node authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (ns *RiskAssessmentNodes) LoadByRiskAssessmentScopeID(

pkg/coredata/risk_assessment_process.go

@@ -25,6 +25,7 @@ import (
 	"github.com/jackc/pgx/v5/pgconn"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 )
 
@@ -54,19 +55,42 @@ func (p *RiskAssessmentProcess) CursorKey(orderBy RiskAssessmentProcessOrderFiel
 	panic(fmt.Sprintf("unsupported order by: %s", orderBy))
 }
 
-func (p *RiskAssessmentProcess) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id FROM risk_assessment_processes WHERE id = $1 LIMIT 1;`
+func (p *RiskAssessmentProcess) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM risk_assessment_processes WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, p.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query risk assessment process authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (ps *RiskAssessmentProcesses) LoadByRiskAssessmentScopeID(

pkg/coredata/risk_assessment_scenario.go

@@ -24,6 +24,7 @@ import (
 	"github.com/jackc/pgx/v5"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 )
 
@@ -52,19 +53,42 @@ func (s *RiskAssessmentScenario) CursorKey(orderBy RiskAssessmentScenarioOrderFi
 	panic(fmt.Sprintf("unsupported order by: %s", orderBy))
 }
 
-func (s *RiskAssessmentScenario) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id FROM risk_assessment_scenarios WHERE id = $1 LIMIT 1;`
+func (s *RiskAssessmentScenario) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM risk_assessment_scenarios WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, s.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query risk scenario authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (ss *RiskAssessmentScenarios) LoadByOrganizationID(

pkg/coredata/risk_assessment_scope.go

@@ -24,6 +24,7 @@ import (
 	"github.com/jackc/pgx/v5"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 )
 
@@ -51,19 +52,42 @@ func (s *RiskAssessmentScope) CursorKey(orderBy RiskAssessmentScopeOrderField) p
 	panic(fmt.Sprintf("unsupported order by: %s", orderBy))
 }
 
-func (s *RiskAssessmentScope) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id FROM risk_assessment_scopes WHERE id = $1 LIMIT 1;`
+func (s *RiskAssessmentScope) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM risk_assessment_scopes WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, s.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query risk assessment scope authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (ss *RiskAssessmentScopes) LoadByRiskAssessmentID(

pkg/coredata/risk_assessment_threat.go

@@ -25,6 +25,7 @@ import (
 	"github.com/jackc/pgx/v5/pgconn"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 )
 
@@ -54,19 +55,42 @@ func (t *RiskAssessmentThreat) CursorKey(orderBy RiskAssessmentThreatOrderField)
 	panic(fmt.Sprintf("unsupported order by: %s", orderBy))
 }
 
-func (t *RiskAssessmentThreat) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id FROM risk_assessment_threats WHERE id = $1 LIMIT 1;`
+func (t *RiskAssessmentThreat) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM risk_assessment_threats WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, t.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query risk assessment threat authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (ts *RiskAssessmentThreats) LoadByRiskAssessmentScopeID(

pkg/coredata/saml_configuration.go

@@ -27,6 +27,7 @@ import (
 	"github.com/jackc/pgx/v5/pgconn"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 )
 
@@ -63,19 +64,42 @@ func (s *SAMLConfiguration) CursorKey(orderBy SAMLConfigurationOrderField) page.
 	panic(fmt.Sprintf("unsupported order by: %s", orderBy))
 }
 
-func (s *SAMLConfiguration) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id FROM iam_saml_configurations WHERE id = $1 LIMIT 1;`
+func (s *SAMLConfiguration) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM iam_saml_configurations WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, s.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query saml configuration authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (s *SAMLConfiguration) GetIdPCertificate() (*x509.Certificate, error) {

pkg/coredata/scim_bridge.go

@@ -24,6 +24,7 @@ import (
 	"github.com/jackc/pgx/v5"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 )
 
@@ -60,19 +61,42 @@ func (s *SCIMBridge) CursorKey(orderBy SCIMBridgeOrderField) page.CursorKey {
 	panic(fmt.Sprintf("unsupported order by: %s", orderBy))
 }
 
-func (s *SCIMBridge) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id FROM iam_scim_bridges WHERE id = $1 LIMIT 1;`
+func (s *SCIMBridge) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM iam_scim_bridges WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, s.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query scim bridge authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (s *SCIMBridge) LoadByID(

pkg/coredata/scim_configuration.go

@@ -25,6 +25,7 @@ import (
 	"github.com/jackc/pgx/v5/pgconn"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 )
 
@@ -50,19 +51,42 @@ func (s *SCIMConfiguration) CursorKey(orderBy SCIMConfigurationOrderField) page.
 	panic(fmt.Sprintf("unsupported order by: %s", orderBy))
 }
 
-func (s *SCIMConfiguration) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id FROM iam_scim_configurations WHERE id = $1 LIMIT 1;`
+func (s *SCIMConfiguration) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM iam_scim_configurations WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, s.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query scim configuration authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (s *SCIMConfiguration) LoadByID(

pkg/coredata/scim_event.go

@@ -25,6 +25,7 @@ import (
 	"github.com/jackc/pgx/v5"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 )
 
@@ -56,19 +57,42 @@ func (s *SCIMEvent) CursorKey(orderBy SCIMEventOrderField) page.CursorKey {
 	panic(fmt.Sprintf("unsupported order by: %s", orderBy))
 }
 
-func (s *SCIMEvent) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id FROM iam_scim_events WHERE id = $1 LIMIT 1;`
+func (s *SCIMEvent) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM iam_scim_events WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, s.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query scim event authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (s *SCIMEvent) LoadByID(

pkg/coredata/session.go

@@ -26,6 +26,7 @@ import (
 	"github.com/jackc/pgx/v5"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 )
 
@@ -194,27 +195,51 @@ LIMIT 1;
 
 // AuthorizationAttributes loads the minimal authorization attributes for policy condition evaluation.
 // It is intentionally lightweight and does not populate the Session struct.
-func (s *Session) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
+func (s *Session) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
 	q := `
 SELECT
+    id,
     identity_id
 FROM
     iam_sessions
 WHERE
-    id = $1
-LIMIT 1;
+    id = ANY(@resource_ids::text[])
 `
 
-	var identityID gid.GID
-	if err := conn.QueryRow(ctx, q, s.ID).Scan(&identityID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query session iam attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query session authorization attributes: %w", err)
+	}
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID, len(resourceIDs))
+	for rows.Next() {
+		var (
+			id         gid.GID
+			identityID gid.GID
+		)
+
+		err = rows.Scan(&id, &identityID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan session authorization attributes: %w", err)
 		}
 
-	return map[string]string{"identity_id": identityID.String()}, nil
+		attrsByID[id] = policy.Attributes{"identity_id": identityID.String()}
+	}
+
+	if err = rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate session authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (s *Session) Insert(

pkg/coredata/slack_message.go

@@ -24,6 +24,7 @@ import (
 	"github.com/jackc/pgx/v5"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/mail"
 )
 
@@ -57,19 +58,42 @@ func (e ErrSlackMessageNotFound) Error() string {
 	return "slack message not found"
 }
 
-func (sm *SlackMessage) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id FROM slack_messages WHERE id = $1 LIMIT 1;`
+func (sm *SlackMessage) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM slack_messages WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, sm.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query slack message authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func NewSlackMessage(

pkg/coredata/statement_of_applicability.go

@@ -25,6 +25,7 @@ import (
 	"github.com/jackc/pgx/v5/pgconn"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 )
 
@@ -52,19 +53,42 @@ func (s StatementOfApplicability) CursorKey(orderBy StatementOfApplicabilityOrde
 	panic(fmt.Sprintf("unsupported order by: %s", orderBy))
 }
 
-func (s *StatementOfApplicability) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id FROM statements_of_applicability WHERE id = $1 LIMIT 1;`
+func (s *StatementOfApplicability) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM statements_of_applicability WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, s.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query statement of applicability authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (s *StatementOfApplicability) LoadByID(

pkg/coredata/task.go

@@ -25,6 +25,7 @@ import (
 	"github.com/jackc/pgx/v5/pgconn"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 )
 
@@ -63,19 +64,42 @@ func (t Task) CursorKey(orderBy TaskOrderField) page.CursorKey {
 	panic(fmt.Sprintf("unsupported order by: %s", orderBy))
 }
 
-func (t *Task) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id FROM tasks WHERE id = $1 LIMIT 1;`
+func (t *Task) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM tasks WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, t.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query task authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (t *Task) LoadByID(

pkg/coredata/third_party.go

@@ -24,6 +24,7 @@ import (
 	"github.com/jackc/pgx/v5"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 )
 
@@ -181,19 +182,42 @@ func (v ThirdParty) CursorKey(orderBy ThirdPartyOrderField) page.CursorKey {
 	panic(fmt.Sprintf("unsupported order by: %s", orderBy))
 }
 
-func (v *ThirdParty) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id FROM third_parties WHERE id = $1 LIMIT 1;`
+func (v *ThirdParty) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM third_parties WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, v.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query thirdParty authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (v *ThirdParty) LoadByID(

pkg/coredata/third_party_business_associate_agreement.go

@@ -16,7 +16,6 @@ package coredata
 
 import (
 	"context"
-	"errors"
 	"fmt"
 	"maps"
 	"time"
@@ -24,6 +23,7 @@ import (
 	"github.com/jackc/pgx/v5"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 )
 
@@ -53,19 +53,42 @@ func (v ThirdPartyBusinessAssociateAgreement) CursorKey(orderBy ThirdPartyBusine
 	panic(fmt.Sprintf("unsupported order by: %s", orderBy))
 }
 
-func (vbaa *ThirdPartyBusinessAssociateAgreement) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id FROM third_party_business_associate_agreements WHERE id = $1 LIMIT 1;`
+func (vbaa *ThirdPartyBusinessAssociateAgreement) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM third_party_business_associate_agreements WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, vbaa.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query thirdParty business associate agreement authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (vbaa *ThirdPartyBusinessAssociateAgreement) LoadByThirdPartyID(

pkg/coredata/third_party_compliance_report.go

@@ -16,7 +16,6 @@ package coredata
 
 import (
 	"context"
-	"errors"
 	"fmt"
 	"maps"
 	"time"
@@ -24,6 +23,7 @@ import (
 	"github.com/jackc/pgx/v5"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 )
 
@@ -54,19 +54,42 @@ func (c ThirdPartyComplianceReport) CursorKey(orderBy ThirdPartyComplianceReport
 	panic(fmt.Sprintf("unsupported order by: %s", orderBy))
 }
 
-func (v *ThirdPartyComplianceReport) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id FROM third_party_compliance_reports WHERE id = $1 LIMIT 1;`
+func (v *ThirdPartyComplianceReport) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM third_party_compliance_reports WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, v.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query thirdParty compliance report authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (vcs *ThirdPartyComplianceReports) LoadForThirdPartyID(

pkg/coredata/third_party_contact.go

@@ -24,6 +24,7 @@ import (
 	"github.com/jackc/pgx/v5"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/mail"
 	"go.probo.inc/probo/pkg/page"
 )
@@ -57,19 +58,42 @@ func (vc ThirdPartyContact) CursorKey(orderBy ThirdPartyContactOrderField) page.
 	panic(fmt.Sprintf("unsupported order by: %s", orderBy))
 }
 
-func (vc *ThirdPartyContact) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id FROM third_party_contacts WHERE id = $1 LIMIT 1;`
+func (vc *ThirdPartyContact) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM third_party_contacts WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, vc.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query thirdParty contact authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (vc *ThirdPartyContact) LoadByID(

pkg/coredata/third_party_data_privacy_agreement.go

@@ -16,7 +16,6 @@ package coredata
 
 import (
 	"context"
-	"errors"
 	"fmt"
 	"maps"
 	"time"
@@ -24,6 +23,7 @@ import (
 	"github.com/jackc/pgx/v5"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 )
 
@@ -53,19 +53,42 @@ func (v ThirdPartyDataPrivacyAgreement) CursorKey(orderBy ThirdPartyDataPrivacyA
 	panic(fmt.Sprintf("unsupported order by: %s", orderBy))
 }
 
-func (vdpa *ThirdPartyDataPrivacyAgreement) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id FROM third_party_data_privacy_agreements WHERE id = $1 LIMIT 1;`
+func (vdpa *ThirdPartyDataPrivacyAgreement) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM third_party_data_privacy_agreements WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, vdpa.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query thirdParty data privacy agreement authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (vdpa *ThirdPartyDataPrivacyAgreement) LoadByThirdPartyID(

pkg/coredata/third_party_risk_assessment.go

@@ -16,7 +16,6 @@ package coredata
 
 import (
 	"context"
-	"errors"
 	"fmt"
 	"maps"
 	"time"
@@ -24,6 +23,7 @@ import (
 	"github.com/jackc/pgx/v5"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 )
 
@@ -55,19 +55,42 @@ func (v ThirdPartyRiskAssessment) CursorKey(orderBy ThirdPartyRiskAssessmentOrde
 	panic(fmt.Sprintf("unsupported order by: %s", orderBy))
 }
 
-func (v *ThirdPartyRiskAssessment) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id FROM third_party_risk_assessments WHERE id = $1 LIMIT 1;`
+func (v *ThirdPartyRiskAssessment) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM third_party_risk_assessments WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, v.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query thirdParty risk assessment authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 // Insert adds a new risk assessment to the database

pkg/coredata/third_party_service.go

@@ -24,6 +24,7 @@ import (
 	"github.com/jackc/pgx/v5"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 )
 
@@ -52,19 +53,42 @@ func (vs ThirdPartyService) CursorKey(orderBy ThirdPartyServiceOrderField) page.
 	panic(fmt.Sprintf("unsupported order by: %s", orderBy))
 }
 
-func (vs *ThirdPartyService) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id FROM third_party_services WHERE id = $1 LIMIT 1;`
+func (vs *ThirdPartyService) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM third_party_services WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, vs.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query thirdParty service authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (vs *ThirdPartyService) LoadByID(

pkg/coredata/tracker_pattern.go

@@ -26,6 +26,7 @@ import (
 	"github.com/jackc/pgx/v5/pgconn"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 )
 
@@ -79,19 +80,42 @@ func (tp *TrackerPattern) CursorKey(field TrackerPatternOrderField) page.CursorK
 	panic(fmt.Sprintf("unsupported order by: %s", field))
 }
 
-func (tp *TrackerPattern) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id FROM tracker_patterns WHERE id = $1 LIMIT 1;`
+func (tp *TrackerPattern) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM tracker_patterns WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, tp.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query tracker pattern authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (tp *TrackerPattern) LoadByID(

pkg/coredata/tracker_resource.go

@@ -25,6 +25,7 @@ import (
 	"github.com/jackc/pgx/v5/pgconn"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 )
 
@@ -67,19 +68,42 @@ func (tr *TrackerResource) CursorKey(field TrackerResourceOrderField) page.Curso
 	panic(fmt.Sprintf("unsupported order by: %s", field))
 }
 
-func (tr *TrackerResource) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id FROM tracker_resources WHERE id = $1 LIMIT 1;`
+func (tr *TrackerResource) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM tracker_resources WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, tr.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query tracker resource authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (tr *TrackerResource) LoadByID(

pkg/coredata/transfer_impact_assessment.go

@@ -25,6 +25,7 @@ import (
 	"github.com/jackc/pgx/v5/pgconn"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 )
 
@@ -162,19 +163,42 @@ func (tia *TransferImpactAssessment) CursorKey(field TransferImpactAssessmentOrd
 	panic(fmt.Sprintf("unsupported order by: %s", field))
 }
 
-func (tia *TransferImpactAssessment) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id FROM processing_activity_transfer_impact_assessments WHERE id = $1 LIMIT 1;`
+func (tia *TransferImpactAssessment) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM processing_activity_transfer_impact_assessments WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, tia.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query transfer impact assessment authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (tias *TransferImpactAssessments) CountByOrganizationID(

pkg/coredata/trust_center.go

@@ -25,6 +25,7 @@ import (
 	"github.com/jackc/pgx/v5/pgconn"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 )
 
@@ -56,19 +57,42 @@ func (tc *TrustCenter) CursorKey(orderBy TrustCenterOrderField) page.CursorKey {
 	panic(fmt.Sprintf("unsupported order by: %s", orderBy))
 }
 
-func (tc *TrustCenter) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id FROM trust_centers WHERE id = $1 LIMIT 1;`
+func (tc *TrustCenter) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM trust_centers WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, tc.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query trust center authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (tc *TrustCenter) LoadByID(

pkg/coredata/trust_center_access.go

@@ -25,6 +25,7 @@ import (
 	"github.com/jackc/pgx/v5/pgconn"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 )
 
@@ -52,19 +53,42 @@ func (tca *TrustCenterAccess) CursorKey(orderBy TrustCenterAccessOrderField) pag
 	panic(fmt.Sprintf("unsupported order by: %s", orderBy))
 }
 
-func (tca *TrustCenterAccess) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id FROM trust_center_accesses WHERE id = $1 LIMIT 1;`
+func (tca *TrustCenterAccess) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM trust_center_accesses WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, tca.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query trust center access authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (tca *TrustCenterAccess) LoadByID(

pkg/coredata/trust_center_document_access.go

@@ -25,6 +25,7 @@ import (
 	"github.com/jackc/pgx/v5/pgconn"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 )
 
@@ -53,19 +54,42 @@ func (tcda *TrustCenterDocumentAccess) CursorKey(orderBy TrustCenterDocumentAcce
 	panic(fmt.Sprintf("unsupported order by: %s", orderBy))
 }
 
-func (tcda *TrustCenterDocumentAccess) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id FROM trust_center_document_accesses WHERE id = $1 LIMIT 1;`
+func (tcda *TrustCenterDocumentAccess) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM trust_center_document_accesses WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, tcda.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query trust center document access authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (tcda *TrustCenterDocumentAccess) LoadByID(

pkg/coredata/trust_center_file.go

@@ -16,7 +16,6 @@ package coredata
 
 import (
 	"context"
-	"errors"
 	"fmt"
 	"maps"
 	"time"
@@ -24,6 +23,7 @@ import (
 	"github.com/jackc/pgx/v5"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 )
 
@@ -55,19 +55,42 @@ func (t TrustCenterFile) CursorKey(orderBy TrustCenterFileOrderField) page.Curso
 	panic(fmt.Sprintf("unsupported order by: %s", orderBy))
 }
 
-func (t *TrustCenterFile) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id FROM trust_center_files WHERE id = $1 LIMIT 1;`
+func (t *TrustCenterFile) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM trust_center_files WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, t.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query trust center file authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (t *TrustCenterFile) LoadByID(

pkg/coredata/trust_center_reference.go

@@ -25,6 +25,7 @@ import (
 	"github.com/jackc/pgx/v5/pgconn"
 	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 )
 
@@ -60,19 +61,42 @@ func (t TrustCenterReference) CursorKey(orderBy TrustCenterReferenceOrderField)
 	panic(fmt.Sprintf("unsupported order by: %s", orderBy))
 }
 
-func (t *TrustCenterReference) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id FROM trust_center_references WHERE id = $1 LIMIT 1;`
+func (t *TrustCenterReference) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM trust_center_references WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, t.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query trust center reference authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (t *TrustCenterReference) LoadByID(

pkg/coredata/webhook_subscription.go

@@ -26,6 +26,7 @@ import (
 	"go.probo.inc/probo/pkg/crypto/cipher"
 	"go.probo.inc/probo/pkg/crypto/rand"
 	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
 	"go.probo.inc/probo/pkg/page"
 )
 
@@ -84,19 +85,42 @@ func (w WebhookSubscription) CursorKey(orderBy WebhookSubscriptionOrderField) pa
 }
 
 // AuthorizationAttributes returns the authorization attributes for policy evaluation.
-func (w *WebhookSubscription) AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error) {
-	q := `SELECT organization_id FROM webhook_subscriptions WHERE id = $1 LIMIT 1;`
+func (w *WebhookSubscription) AuthorizationAttributes(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	q := `SELECT id, organization_id FROM webhook_subscriptions WHERE id = ANY(@resource_ids::text[])`
 
-	var organizationID gid.GID
-	if err := conn.QueryRow(ctx, q, w.ID).Scan(&organizationID); err != nil {
-		if errors.Is(err, pgx.ErrNoRows) {
-			return nil, ErrResourceNotFound
+	args := pgx.StrictNamedArgs{
+		"resource_ids": resourceIDs,
 	}
 
-		return nil, fmt.Errorf("cannot query webhook subscription authorization attributes: %w", err)
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return nil, fmt.Errorf("cannot query authorization attributes: %w", err)
 	}
 
-	return map[string]string{"organization_id": organizationID.String()}, nil
+	defer rows.Close()
+
+	attrsByID := make(policy.AttributesByID)
+	for rows.Next() {
+		var id, organizationID gid.GID
+		err := rows.Scan(&id, &organizationID)
+		if err != nil {
+			return nil, fmt.Errorf("cannot scan authorization attributes: %w", err)
+		}
+
+		attrsByID[id] = policy.Attributes{
+			"organization_id": organizationID.String(),
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("cannot iterate authorization attributes: %w", err)
+	}
+
+	return attrsByID, nil
 }
 
 func (w *WebhookSubscription) LoadByID(

pkg/iam/authorizer.go

@@ -16,10 +16,10 @@ package iam
 
 import (
 	"context"
-	"encoding/json"
 	"errors"
 	"fmt"
 	"maps"
+	"slices"
 	"strings"
 	"time"
 
@@ -30,10 +30,14 @@ import (
 	"go.probo.inc/probo/pkg/iam/policy"
 )
 
-// AuthorizationAttributer is implemented by entities that provide attributes
-// for policy condition evaluation.
+// AuthorizationAttributer is implemented by entities that can provide
+// authorization attributes for multiple resources in one query.
 type AuthorizationAttributer interface {
-	AuthorizationAttributes(ctx context.Context, conn pg.Querier) (map[string]string, error)
+	AuthorizationAttributes(
+		ctx context.Context,
+		conn pg.Querier,
+		resourceIDs []gid.GID,
+	) (policy.AttributesByID, error)
 }
 
 // AuthorizeParams contains the parameters for an authorization request.
@@ -42,11 +46,40 @@ type AuthorizeParams struct {
 	Resource            gid.GID
 	Session             *gid.GID
 	Action              string
-	ResourceAttributes  map[string]string
+	ResourceAttributes  policy.Attributes
 	DryRun              bool
 	SkipAssumptionCheck bool
 }
 
+// AuthorizeBatchParams contains the parameters for a batch authorization request.
+type AuthorizeBatchParams struct {
+	Principal           gid.GID
+	Session             *gid.GID
+	Action              string
+	Resources           []gid.GID
+	ResourceAttributes  policy.Attributes
+	DryRun              bool
+	SkipAssumptionCheck bool
+}
+
+// MultiAuthorizeItem contains one authorization request in a multi-authorization batch.
+// ResourceAttributes are merged on top of the resource attributes loaded
+// for the resource before the policy is evaluated.
+type MultiAuthorizeItem struct {
+	Resource            gid.GID
+	Action              string
+	ResourceAttributes  policy.Attributes
+	DryRun              bool
+	SkipAssumptionCheck bool
+}
+
+// AuthorizeMultiParams contains the parameters for a multi-authorization request.
+type AuthorizeMultiParams struct {
+	Principal gid.GID
+	Session   *gid.GID
+	Items     []MultiAuthorizeItem
+}
+
 // Authorizer evaluates authorization requests against registered policies.
 type Authorizer struct {
 	pg        *pg.Client
@@ -72,58 +105,303 @@ func (a *Authorizer) RegisterPolicySet(ps *PolicySet) {
 
 // Authorize checks if the principal is allowed to perform the action on the resource.
 func (a *Authorizer) Authorize(ctx context.Context, params AuthorizeParams) (*coredata.Scope, error) {
+	return a.AuthorizeBatch(
+		ctx,
+		AuthorizeBatchParams{
+			Principal:           params.Principal,
+			Session:             params.Session,
+			Action:              params.Action,
+			Resources:           []gid.GID{params.Resource},
+			ResourceAttributes:  params.ResourceAttributes,
+			DryRun:              params.DryRun,
+			SkipAssumptionCheck: params.SkipAssumptionCheck,
+		},
+	)
+}
+
+// AuthorizeBatch checks whether the principal is allowed to perform the action
+// on all provided resources.
+func (a *Authorizer) AuthorizeBatch(ctx context.Context, params AuthorizeBatchParams) (*coredata.Scope, error) {
 	if params.Principal.EntityType() != coredata.IdentityEntityType {
 		return nil, NewUnsupportedPrincipalTypeError(params.Principal.EntityType())
 	}
 
+	if len(params.Resources) == 0 {
+		return nil, NewEmptyResourceBatchError(params.Action)
+	}
+
+	expectedEntityType := params.Resources[0].EntityType()
+	items := make([]MultiAuthorizeItem, 0, len(params.Resources))
+
+	for _, resourceID := range params.Resources {
+		if resourceID.EntityType() != expectedEntityType {
+			entityTypes := make([]uint16, 0, len(params.Resources))
+			for _, r := range params.Resources {
+				entityTypes = append(entityTypes, r.EntityType())
+			}
+
+			return nil, NewMixedEntityTypeBatchError(
+				params.Action,
+				uniqueSortedEntityTypes(entityTypes),
+			)
+		}
+
+		items = append(
+			items,
+			MultiAuthorizeItem{
+				Resource:            resourceID,
+				Action:              params.Action,
+				DryRun:              params.DryRun,
+				SkipAssumptionCheck: params.SkipAssumptionCheck,
+			},
+		)
+	}
+
 	var scope *coredata.Scope
 
-	if err := a.pg.WithTx(ctx, func(ctx context.Context, tx pg.Tx) error {
-		authorizedScope, err := a.authorize(ctx, tx, params)
+	if err := a.pg.WithTx(
+		ctx,
+		func(ctx context.Context, tx pg.Tx) error {
+			authorizedScope, err := a.authorizeMulti(
+				ctx,
+				tx,
+				AuthorizeMultiParams{
+					Principal: params.Principal,
+					Session:   params.Session,
+					Items:     items,
+				},
+				params.ResourceAttributes,
+			)
 			if err != nil {
 				return err
 			}
 
 			scope = authorizedScope
+
 			return nil
-	}); err != nil {
+		},
+	); err != nil {
 		return nil, err
 	}
 
 	return scope, nil
 }
 
-func (a *Authorizer) authorize(ctx context.Context, tx pg.Tx, params AuthorizeParams) (*coredata.Scope, error) {
-	resourceAttrs, err := a.buildResourceAttributes(ctx, tx, params)
-	if err != nil {
-		return nil, fmt.Errorf("cannot build resource attributes: %w", err)
+// AuthorizeMulti evaluates each item independently and returns one decision
+// per item: a nil entry means allowed, a non-nil entry carries the iam
+// error explaining the denial (typically *ErrInsufficientPermissions).
+//
+// Audit log entries for allowed, non-dry-run items are written in a single
+// bulk insert. Use AuthorizeBatch instead when callers want all-or-nothing
+// semantics for a homogeneous batch.
+func (a *Authorizer) AuthorizeMulti(
+	ctx context.Context,
+	params AuthorizeMultiParams,
+) (*coredata.Scope, []error, error) {
+	if params.Principal.EntityType() != coredata.IdentityEntityType {
+		return nil, nil, NewUnsupportedPrincipalTypeError(params.Principal.EntityType())
 	}
 
-	resourceOrgID := resourceAttrs["organization_id"]
-
-	// Find role for resource's organization
-	membership, err := a.loadMembership(ctx, tx, params.Principal, resourceOrgID)
-	if err != nil {
-		return nil, fmt.Errorf("cannot load memberships for principal: %w", err)
+	if len(params.Items) == 0 {
+		return nil, nil, NewEmptyResourceBatchError("")
 	}
 
-	// Check whether the viewer is currently assuming the org of the accessed resource
-	if membership != nil && params.Session != nil && !params.SkipAssumptionCheck {
-		if _, err := a.getActiveChildSessionForMembership(
+	var (
+		scope     *coredata.Scope
+		decisions []error
+	)
+
+	if err := a.pg.WithTx(
+		ctx,
+		func(ctx context.Context, tx pg.Tx) error {
+			s, itemAttrs, d, err := a.evaluateMultiInTx(ctx, tx, params, nil)
+			if err != nil {
+				return err
+			}
+
+			entries := make(coredata.AuditLogEntries, 0, len(params.Items))
+			for i, item := range params.Items {
+				if d[i] != nil {
+					continue
+				}
+
+				entry := a.buildAuditLogEntry(
+					ctx,
+					AuthorizeParams{
+						Principal: params.Principal,
+						Resource:  item.Resource,
+						Session:   params.Session,
+						Action:    item.Action,
+						DryRun:    item.DryRun,
+					},
+					itemAttrs[i],
+				)
+				if entry == nil {
+					continue
+				}
+
+				entries = append(entries, entry)
+			}
+
+			if len(entries) > 0 {
+				if err := entries.BulkInsert(ctx, tx, s); err != nil {
+					a.logger.ErrorCtx(
+						ctx,
+						"cannot bulk insert audit log entries",
+						log.Error(err),
+						log.String("action", params.Items[0].Action),
+					)
+				}
+			}
+
+			scope = s
+			decisions = d
+
+			return nil
+		},
+	); err != nil {
+		return nil, nil, err
+	}
+
+	return scope, decisions, nil
+}
+
+func (a *Authorizer) authorizeMulti(
+	ctx context.Context,
+	tx pg.Tx,
+	params AuthorizeMultiParams,
+	extraResourceAttributes policy.Attributes,
+) (*coredata.Scope, error) {
+	scope, itemAttrs, decisions, err := a.evaluateMultiInTx(
 		ctx,
 		tx,
-			*params.Session,
-			membership.ID,
-		); err != nil {
-			if _, ok := errors.AsType[*ErrSessionNotFound](err); ok {
-				return nil, NewAssumptionRequiredError(params.Principal, membership.ID)
+		params,
+		extraResourceAttributes,
+	)
+	if err != nil {
+		return nil, err
 	}
 
-			if _, ok := errors.AsType[*ErrSessionExpired](err); ok {
-				return nil, NewAssumptionRequiredError(params.Principal, membership.ID)
+	for _, decision := range decisions {
+		if decision != nil {
+			return nil, decision
+		}
 	}
 
-			return nil, fmt.Errorf("cannot get active child session for membership: %w", err)
+	entries := make(coredata.AuditLogEntries, 0, len(params.Items))
+	for i, item := range params.Items {
+		entry := a.buildAuditLogEntry(
+			ctx,
+			AuthorizeParams{
+				Principal: params.Principal,
+				Resource:  item.Resource,
+				Session:   params.Session,
+				Action:    item.Action,
+				DryRun:    item.DryRun,
+			},
+			itemAttrs[i],
+		)
+		if entry == nil {
+			continue
+		}
+
+		entries = append(entries, entry)
+	}
+
+	if len(entries) > 0 {
+		if err := entries.BulkInsert(ctx, tx, scope); err != nil {
+			a.logger.ErrorCtx(
+				ctx,
+				"cannot bulk insert audit log entries",
+				log.Error(err),
+				log.String("action", params.Items[0].Action),
+			)
+		}
+	}
+
+	return scope, nil
+}
+
+// evaluateMultiInTx evaluates every item in params against the loaded
+// policies and resource attributes. It returns the shared scope, the merged
+// per-item resource attributes (used for both evaluation and audit log
+// building), and a parallel slice of per-item decisions (nil = allowed).
+// Callers decide which decisions to persist to the audit log.
+func (a *Authorizer) evaluateMultiInTx(
+	ctx context.Context,
+	tx pg.Tx,
+	params AuthorizeMultiParams,
+	extraResourceAttributes policy.Attributes,
+) (*coredata.Scope, []policy.Attributes, []error, error) {
+	uniqueResourceIDs := make([]gid.GID, 0, len(params.Items))
+	seenResourceIDs := make(map[gid.GID]struct{}, len(params.Items))
+	requiresAssumptionCheck := false
+
+	for _, item := range params.Items {
+		if !item.SkipAssumptionCheck {
+			requiresAssumptionCheck = true
+		}
+
+		if _, ok := seenResourceIDs[item.Resource]; ok {
+			continue
+		}
+
+		seenResourceIDs[item.Resource] = struct{}{}
+		uniqueResourceIDs = append(uniqueResourceIDs, item.Resource)
+	}
+
+	resourceAttrsByResourceID, err := a.buildResourceAttributesBatch(
+		ctx,
+		tx,
+		uniqueResourceIDs,
+		extraResourceAttributes,
+	)
+	if err != nil {
+		return nil, nil, nil, fmt.Errorf("cannot build resource attributes batch: %w", err)
+	}
+
+	actionForErrors := params.Items[0].Action
+
+	resourceOrgID := resourceAttrsByResourceID[uniqueResourceIDs[0]]["organization_id"]
+	for _, resourceID := range uniqueResourceIDs[1:] {
+		if resourceAttrsByResourceID[resourceID]["organization_id"] != resourceOrgID {
+			orgIDs := make([]string, 0, len(uniqueResourceIDs))
+			for _, id := range uniqueResourceIDs {
+				orgIDs = append(orgIDs, resourceAttrsByResourceID[id]["organization_id"])
+			}
+
+			return nil, nil, nil, NewMixedOrganizationBatchError(
+				actionForErrors,
+				uniqueSortedStrings(orgIDs),
+			)
+		}
+	}
+
+	membership, err := a.loadMembership(ctx, tx, params.Principal, resourceOrgID)
+	if err != nil {
+		return nil, nil, nil, fmt.Errorf("cannot load memberships for principal: %w", err)
+	}
+
+	// The assumption check is a property of (principal, membership, session),
+	// so it only runs once even though SkipAssumptionCheck is per-item.
+	// On failure, ErrAssumptionRequired is recorded only against items that
+	// did not opt out.
+	var assumptionErr error
+	if requiresAssumptionCheck {
+		err := a.checkAssumption(
+			ctx,
+			tx,
+			params.Principal,
+			params.Session,
+			membership,
+			false,
+		)
+		if err != nil {
+			if _, ok := errors.AsType[*ErrAssumptionRequired](err); !ok {
+				return nil, nil, nil, err
+			}
+
+			assumptionErr = err
 		}
 	}
 
@@ -132,10 +410,9 @@ func (a *Authorizer) authorize(ctx context.Context, tx pg.Tx, params AuthorizePa
 		role = membership.Role.String()
 	}
 
-	// Only set principal.organization_id if they have a role in this org
-	var scopedPrincipalAttrs map[string]string
+	var scopedPrincipalAttrs policy.Attributes
 	if membership != nil && role != "" {
-		scopedPrincipalAttrs = map[string]string{
+		scopedPrincipalAttrs = policy.Attributes{
 			"organization_id": membership.OrganizationID.String(),
 			"role":            membership.Role.String(),
 		}
@@ -143,7 +420,7 @@ func (a *Authorizer) authorize(ctx context.Context, tx pg.Tx, params AuthorizePa
 
 	principalAttrs, err := a.buildPrincipalAttributes(ctx, tx, params.Principal, scopedPrincipalAttrs)
 	if err != nil {
-		return nil, fmt.Errorf("cannot build principal attributes: %w", err)
+		return nil, nil, nil, fmt.Errorf("cannot build principal attributes: %w", err)
 	}
 
 	if params.Session != nil {
@@ -152,32 +429,162 @@ func (a *Authorizer) authorize(ctx context.Context, tx pg.Tx, params AuthorizePa
 
 	policies := a.buildPoliciesForRole(role)
 
+	decisions := make([]error, len(params.Items))
+	itemAttrs := make([]policy.Attributes, len(params.Items))
+	for i, item := range params.Items {
+		resAttrs := resourceAttrsByResourceID[item.Resource]
+		if len(item.ResourceAttributes) > 0 {
+			merged := maps.Clone(resAttrs)
+			maps.Copy(merged, item.ResourceAttributes)
+			resAttrs = merged
+		}
+		itemAttrs[i] = resAttrs
+
+		if assumptionErr != nil && !item.SkipAssumptionCheck {
+			decisions[i] = assumptionErr
+			continue
+		}
+
 		req := policy.AuthorizationRequest{
 			Principal: params.Principal,
-		Resource:  params.Resource,
-		Action:    params.Action,
+			Resource:  item.Resource,
+			Action:    item.Action,
 			ConditionContext: policy.ConditionContext{
 				Principal: principalAttrs,
-			Resource:  resourceAttrs,
+				Resource:  resAttrs,
 			},
 		}
 
-	if a.evaluator.Evaluate(req, policies).IsAllowed() {
-		scope := coredata.NewScopeFromObjectID(params.Resource)
-		if resourceOrgID != "" {
-			orgID, err := gid.ParseGID(resourceOrgID)
-			if err != nil {
-				return nil, fmt.Errorf("cannot parse organization id from resource attributes: %w", err)
+		if !a.evaluator.Evaluate(req, policies).IsAllowed() {
+			decisions[i] = NewInsufficientPermissionsError(params.Principal, item.Resource, item.Action)
+		}
 	}
 
+	scope := coredata.NewScopeFromObjectID(uniqueResourceIDs[0])
+
+	if resourceOrgID != "" {
+		orgID, _ := gid.ParseGID(resourceOrgID)
 		scope = coredata.NewScope(orgID.TenantID())
 	}
 
-		a.recordAuditLog(ctx, tx, params, resourceAttrs)
-		return scope, nil
+	return scope, itemAttrs, decisions, nil
+}
+
+func (a *Authorizer) buildResourceAttributesBatch(
+	ctx context.Context,
+	conn pg.Querier,
+	uniqueResourceIDs []gid.GID,
+	extraResourceAttributes policy.Attributes,
+) (policy.AttributesByID, error) {
+	resourceAttrsByID, err := a.loadResourceAttributesByType(ctx, conn, uniqueResourceIDs)
+	if err != nil {
+		return nil, err
 	}
 
-	return nil, NewInsufficientPermissionsError(params.Principal, params.Resource, params.Action)
+	resourceAttrsByResourceID := make(policy.AttributesByID, len(uniqueResourceIDs))
+	for _, resourceID := range uniqueResourceIDs {
+		resourceAttrs := resourceAttrsByID[resourceID]
+
+		attrs := policy.Attributes{
+			"id": resourceID.String(),
+		}
+		maps.Copy(attrs, resourceAttrs)
+
+		if extraResourceAttributes != nil {
+			maps.Copy(attrs, extraResourceAttributes)
+		}
+
+		resourceAttrsByResourceID[resourceID] = attrs
+	}
+
+	return resourceAttrsByResourceID, nil
+}
+
+func (a *Authorizer) loadResourceAttributesByType(
+	ctx context.Context,
+	conn pg.Querier,
+	resourceIDs []gid.GID,
+) (policy.AttributesByID, error) {
+	resourceIDsByEntityType := make(map[uint16][]gid.GID)
+	orderedEntityTypes := make([]uint16, 0, len(resourceIDs))
+
+	for _, resourceID := range resourceIDs {
+		entityType := resourceID.EntityType()
+
+		if _, ok := resourceIDsByEntityType[entityType]; !ok {
+			orderedEntityTypes = append(orderedEntityTypes, entityType)
+		}
+
+		resourceIDsByEntityType[entityType] = append(resourceIDsByEntityType[entityType], resourceID)
+	}
+
+	resourceAttrsByID := make(policy.AttributesByID, len(resourceIDs))
+
+	for _, entityType := range orderedEntityTypes {
+		groupResourceIDs := resourceIDsByEntityType[entityType]
+
+		entity, ok := coredata.NewEntityFromID(groupResourceIDs[0])
+		if !ok {
+			return nil, fmt.Errorf("unsupported resource type: %d", groupResourceIDs[0].EntityType())
+		}
+
+		attributer, ok := entity.(AuthorizationAttributer)
+		if !ok {
+			return nil, NewBatchAuthorizationUnsupportedResourceTypeError(entityType)
+		}
+
+		groupAttrsByID, err := attributer.AuthorizationAttributes(ctx, conn, groupResourceIDs)
+		if err != nil {
+			return nil, fmt.Errorf(
+				"cannot load batched resource attributes for entity type %d: %w",
+				entityType,
+				err,
+			)
+		}
+
+		for _, resourceID := range groupResourceIDs {
+			resourceAttrs, ok := groupAttrsByID[resourceID]
+			if !ok {
+				return nil, coredata.ErrResourceNotFound
+			}
+
+			resourceAttrsByID[resourceID] = resourceAttrs
+		}
+	}
+
+	return resourceAttrsByID, nil
+}
+
+func (a *Authorizer) checkAssumption(
+	ctx context.Context,
+	tx pg.Tx,
+	principalID gid.GID,
+	sessionID *gid.GID,
+	membership *coredata.Membership,
+	skipAssumptionCheck bool,
+) error {
+	if membership == nil || sessionID == nil || skipAssumptionCheck {
+		return nil
+	}
+
+	if _, err := a.getActiveChildSessionForMembership(
+		ctx,
+		tx,
+		*sessionID,
+		membership.ID,
+	); err != nil {
+		if _, ok := errors.AsType[*ErrSessionNotFound](err); ok {
+			return NewAssumptionRequiredError(principalID, membership.ID)
+		}
+
+		if _, ok := errors.AsType[*ErrSessionExpired](err); ok {
+			return NewAssumptionRequiredError(principalID, membership.ID)
+		}
+
+		return fmt.Errorf("cannot get active child session for membership: %w", err)
+	}
+
+	return nil
 }
 
 func (a *Authorizer) loadMembership(
@@ -234,55 +641,30 @@ func (a *Authorizer) buildPrincipalAttributes(
 	ctx context.Context,
 	conn pg.Querier,
 	principalID gid.GID,
-	defaultAttrs map[string]string,
-) (map[string]string, error) {
-	attrs := map[string]string{
+	defaultAttrs policy.Attributes,
+) (policy.Attributes, error) {
+	attrs := policy.Attributes{
 		"id": principalID.String(),
 	}
 	maps.Copy(attrs, defaultAttrs)
 
 	if entity, ok := coredata.NewEntityFromID(principalID); ok {
-		if attributer, ok := entity.(AuthorizationAttributer); ok {
-			entityAttrs, err := attributer.AuthorizationAttributes(ctx, conn)
+		attributer, ok := entity.(AuthorizationAttributer)
+		if !ok {
+			return nil, NewBatchAuthorizationUnsupportedResourceTypeError(principalID.EntityType())
+		}
+
+		entityAttrsByID, err := attributer.AuthorizationAttributes(ctx, conn, []gid.GID{principalID})
 		if err != nil {
 			return nil, fmt.Errorf("cannot load principal attributes: %w", err)
 		}
 
-			maps.Copy(attrs, entityAttrs)
-		}
-	}
-
-	return attrs, nil
-}
-
-func (a *Authorizer) buildResourceAttributes(
-	ctx context.Context,
-	conn pg.Querier,
-	params AuthorizeParams,
-) (map[string]string, error) {
-	attrs := map[string]string{
-		"id": params.Resource.String(),
-	}
-
-	entity, ok := coredata.NewEntityFromID(params.Resource)
+		entityAttrs, ok := entityAttrsByID[principalID]
 		if !ok {
-		return nil, fmt.Errorf("unsupported resource type: %d", params.Resource.EntityType())
-	}
-
-	attributer, ok := entity.(AuthorizationAttributer)
-	if !ok {
-		return nil, fmt.Errorf("resource %d does not implement AuthorizationAttributer", params.Resource.EntityType())
-	}
-
-	entityAttrs, err := attributer.AuthorizationAttributes(ctx, conn)
-	if err != nil {
-		return nil, fmt.Errorf("cannot load resource attributes: %w", err)
+			return nil, coredata.ErrResourceNotFound
 		}
 
 		maps.Copy(attrs, entityAttrs)
-
-	if params.ResourceAttributes != nil {
-		maps.Copy(attrs, params.ResourceAttributes)
 	}
 
 	return attrs, nil
@@ -298,9 +680,44 @@ func (a *Authorizer) buildPoliciesForRole(role string) []*policy.Policy {
 	return policies
 }
 
-// resourceTypeFromAction extracts the resource type name from an action
-// string. For example, "core:thirdParty:create" returns "ThirdParty" and
-// "core:webhook-subscription:delete" returns "WebhookSubscription".
+func uniqueSortedStrings(values []string) []string {
+	set := make(map[string]struct{}, len(values))
+	unique := make([]string, 0, len(values))
+
+	for _, value := range values {
+		if _, ok := set[value]; ok {
+			continue
+		}
+
+		set[value] = struct{}{}
+		unique = append(unique, value)
+	}
+
+	slices.Sort(unique)
+
+	return unique
+}
+
+func uniqueSortedEntityTypes(values []uint16) []uint16 {
+	set := make(map[uint16]struct{}, len(values))
+	unique := make([]uint16, 0, len(values))
+
+	for _, value := range values {
+		if _, ok := set[value]; ok {
+			continue
+		}
+
+		set[value] = struct{}{}
+		unique = append(unique, value)
+	}
+
+	slices.Sort(unique)
+
+	return unique
+}
+
+// resourceTypeFromAction extracts the PascalCase resource type from an
+// action string, e.g. "core:webhook-subscription:delete" -> "WebhookSubscription".
 func resourceTypeFromAction(action string) string {
 	parts := strings.Split(action, ":")
 	if len(parts) < 3 {
@@ -317,19 +734,20 @@ func resourceTypeFromAction(action string) string {
 	return strings.Join(segments, "")
 }
 
-func (a *Authorizer) recordAuditLog(
+// buildAuditLogEntry returns nil when no entry should be recorded
+// (dry run or missing/invalid organization id).
+func (a *Authorizer) buildAuditLogEntry(
 	ctx context.Context,
-	tx pg.Tx,
 	params AuthorizeParams,
-	resourceAttrs map[string]string,
-) {
+	resourceAttrs policy.Attributes,
+) *coredata.AuditLogEntry {
 	if params.DryRun {
-		return
+		return nil
 	}
 
 	orgIDStr := resourceAttrs["organization_id"]
 	if orgIDStr == "" {
-		return
+		return nil
 	}
 
 	orgID, err := gid.ParseGID(orgIDStr)
@@ -340,7 +758,7 @@ func (a *Authorizer) recordAuditLog(
 			log.Error(err),
 		)
 
-		return
+		return nil
 	}
 
 	var actorType coredata.AuditLogActorType
@@ -352,18 +770,9 @@ func (a *Authorizer) recordAuditLog(
 
 	resourceType := resourceTypeFromAction(params.Action)
 
-	metadata, err := json.Marshal(map[string]any{})
-	if err != nil {
-		a.logger.ErrorCtx(
-			ctx,
-			"cannot marshal audit log metadata",
-			log.Error(err),
-		)
+	metadata := []byte("{}")
 
-		return
-	}
-
-	entry := &coredata.AuditLogEntry{
+	return &coredata.AuditLogEntry{
 		ID:             gid.New(orgID.TenantID(), coredata.AuditLogEntryEntityType),
 		OrganizationID: orgID,
 		ActorID:        params.Principal,
@@ -374,16 +783,4 @@ func (a *Authorizer) recordAuditLog(
 		Metadata:       metadata,
 		CreatedAt:      time.Now(),
 	}
-
-	scope := coredata.NewScope(orgID.TenantID())
-
-	if err := entry.Insert(ctx, tx, scope); err != nil {
-		a.logger.ErrorCtx(
-			ctx,
-			"cannot insert audit log entry",
-			log.Error(err),
-			log.String("action", params.Action),
-			log.String("resource_id", params.Resource.String()),
-		)
-	}
 }

pkg/iam/authorizer_unit_test.go

@@ -0,0 +1,489 @@
+// Copyright (c) 2026 Probo Inc <hello@getprobo.com>.
+//
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+//
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+// AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+// LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+// OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+// PERFORMANCE OF THIS SOFTWARE.
+
+package iam
+
+import (
+	"context"
+	"errors"
+	"io"
+	"testing"
+
+	"github.com/jackc/pgx/v5"
+	"github.com/jackc/pgx/v5/pgconn"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+	"go.gearno.de/kit/log"
+	"go.gearno.de/kit/pg"
+	"go.probo.inc/probo/pkg/coredata"
+	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/iam/policy"
+)
+
+func TestAuthorizer_ValidateInputs(t *testing.T) {
+	t.Parallel()
+
+	t.Run("authorize rejects unsupported principal type", func(t *testing.T) {
+		t.Parallel()
+
+		a := &Authorizer{}
+		_, err := a.Authorize(
+			context.Background(),
+			AuthorizeParams{
+				Principal: gid.New(gid.NewTenantID(), coredata.OrganizationEntityType),
+			},
+		)
+		require.Error(t, err)
+
+		errUnsupported, ok := errors.AsType[*ErrUnsupportedPrincipalType](err)
+		require.True(t, ok)
+		assert.Equal(t, coredata.OrganizationEntityType, errUnsupported.EntityType)
+	})
+
+	t.Run("authorize batch rejects unsupported principal type", func(t *testing.T) {
+		t.Parallel()
+
+		a := &Authorizer{}
+		_, err := a.AuthorizeBatch(
+			context.Background(),
+			AuthorizeBatchParams{
+				Principal: gid.New(gid.NewTenantID(), coredata.OrganizationEntityType),
+				Resources: []gid.GID{gid.New(gid.NewTenantID(), coredata.FrameworkEntityType)},
+			},
+		)
+		require.Error(t, err)
+
+		errUnsupported, ok := errors.AsType[*ErrUnsupportedPrincipalType](err)
+		require.True(t, ok)
+		assert.Equal(t, coredata.OrganizationEntityType, errUnsupported.EntityType)
+	})
+
+	t.Run("authorize batch rejects empty resources", func(t *testing.T) {
+		t.Parallel()
+
+		a := &Authorizer{}
+		_, err := a.AuthorizeBatch(
+			context.Background(),
+			AuthorizeBatchParams{
+				Principal: gid.New(gid.NilTenant, coredata.IdentityEntityType),
+			},
+		)
+		require.Error(t, err)
+		_, ok := errors.AsType[*ErrEmptyResourceBatch](err)
+		require.True(t, ok)
+	})
+
+}
+
+func TestAuthorizer_InternalErrorPaths(t *testing.T) {
+	t.Parallel()
+
+	ctx := context.Background()
+	identityID := gid.New(gid.NilTenant, coredata.IdentityEntityType)
+	unknownResourceID := gid.New(gid.NewTenantID(), 65535)
+	unsupportedResourceID := gid.New(gid.NewTenantID(), coredata.OAuth2AccessTokenEntityType)
+
+	a := &Authorizer{
+		evaluator: policy.NewEvaluator(),
+		policySet: NewPolicySet(),
+	}
+
+	t.Run("authorize batch returns wrapped resource attributes batch error", func(t *testing.T) {
+		t.Parallel()
+
+		_, err := a.authorizeMulti(
+			ctx,
+			nil,
+			AuthorizeMultiParams{
+				Principal: identityID,
+				Items: []MultiAuthorizeItem{
+					{
+						Resource: unknownResourceID,
+						Action:   "core:test:list",
+					},
+				},
+			},
+			nil,
+		)
+		require.Error(t, err)
+		assert.ErrorContains(t, err, "cannot build resource attributes batch")
+	})
+
+	t.Run("authorize batch rejects mixed entity types", func(t *testing.T) {
+		t.Parallel()
+
+		firstResourceID := gid.New(gid.NewTenantID(), coredata.FrameworkEntityType)
+		secondResourceID := gid.New(gid.NewTenantID(), coredata.OrganizationEntityType)
+
+		_, err := a.AuthorizeBatch(
+			ctx,
+			AuthorizeBatchParams{
+				Principal: identityID,
+				Action:    "core:test:list",
+				Resources: []gid.GID{firstResourceID, secondResourceID},
+			},
+		)
+		require.Error(t, err)
+
+		errMixedEntityType, ok := errors.AsType[*ErrMixedEntityTypeBatch](err)
+		require.True(t, ok)
+		assert.Equal(
+			t,
+			[]uint16{coredata.OrganizationEntityType, coredata.FrameworkEntityType},
+			errMixedEntityType.EntityTypes,
+		)
+	})
+
+	t.Run("build principal attributes rejects unsupported batch interface type", func(t *testing.T) {
+		t.Parallel()
+
+		_, err := a.buildPrincipalAttributes(
+			ctx,
+			nil,
+			unsupportedResourceID,
+			map[string]string{"role": "OWNER"},
+		)
+		require.Error(t, err)
+		errUnsupported, ok := errors.AsType[*ErrBatchAuthorizationUnsupportedResourceType](err)
+		require.True(t, ok)
+		assert.Equal(t, coredata.OAuth2AccessTokenEntityType, errUnsupported.EntityType)
+	})
+
+	t.Run("build principal attributes keeps defaults when entity type is unknown", func(t *testing.T) {
+		t.Parallel()
+
+		attrs, err := a.buildPrincipalAttributes(
+			ctx,
+			nil,
+			unknownResourceID,
+			map[string]string{"role": "OWNER"},
+		)
+		require.NoError(t, err)
+		assert.Equal(t, unknownResourceID.String(), attrs["id"])
+		assert.Equal(t, "OWNER", attrs["role"])
+	})
+}
+
+func TestAuthorizer_HelperMethods(t *testing.T) {
+	t.Parallel()
+
+	t.Run("check assumption short-circuits", func(t *testing.T) {
+		t.Parallel()
+
+		a := &Authorizer{}
+		identityID := gid.New(gid.NilTenant, coredata.IdentityEntityType)
+		sessionID := gid.New(gid.NilTenant, coredata.SessionEntityType)
+		membership := &coredata.Membership{ID: gid.New(gid.NewTenantID(), coredata.MembershipEntityType)}
+
+		require.NoError(t, a.checkAssumption(context.Background(), nil, identityID, nil, membership, false))
+		require.NoError(t, a.checkAssumption(context.Background(), nil, identityID, &sessionID, nil, false))
+		require.NoError(t, a.checkAssumption(context.Background(), nil, identityID, &sessionID, membership, true))
+	})
+
+	t.Run("build policies for role includes identity scoped policies", func(t *testing.T) {
+		t.Parallel()
+
+		a := &Authorizer{
+			policySet: NewPolicySet().
+				AddIdentityScopedPolicy(policy.NewPolicy("identity", "Identity", policy.Allow("identity:read"))).
+				AddRolePolicy("OWNER", policy.NewPolicy("owner", "Owner", policy.Allow("core:*"))),
+		}
+
+		withRole := a.buildPoliciesForRole("OWNER")
+		require.Len(t, withRole, 2)
+
+		withoutRole := a.buildPoliciesForRole("VIEWER")
+		require.Len(t, withoutRole, 1)
+	})
+
+	t.Run("unique sorted strings deduplicates and sorts", func(t *testing.T) {
+		t.Parallel()
+
+		got := uniqueSortedStrings([]string{"b", "a", "b", "", "c", "a"})
+		assert.Equal(t, []string{"", "a", "b", "c"}, got)
+	})
+
+	t.Run("unique sorted entity types deduplicates and sorts", func(t *testing.T) {
+		t.Parallel()
+
+		got := uniqueSortedEntityTypes(
+			[]uint16{
+				coredata.FrameworkEntityType,
+				coredata.OrganizationEntityType,
+				coredata.FrameworkEntityType,
+				coredata.OrganizationEntityType,
+			},
+		)
+		assert.Equal(
+			t,
+			[]uint16{coredata.OrganizationEntityType, coredata.FrameworkEntityType},
+			got,
+		)
+	})
+
+	t.Run("resource type from action parses segments", func(t *testing.T) {
+		t.Parallel()
+
+		assert.Equal(t, "ThirdParty", resourceTypeFromAction("core:third-party:get"))
+		assert.Equal(t, "WebhookSubscription", resourceTypeFromAction("core:webhook-subscription:delete"))
+		assert.Equal(t, "Unknown", resourceTypeFromAction("invalid-action"))
+	})
+}
+
+func TestAuthorizer_LoadMembership(t *testing.T) {
+	t.Parallel()
+
+	a := &Authorizer{}
+
+	t.Run("empty organization id returns nil membership", func(t *testing.T) {
+		t.Parallel()
+
+		membership, err := a.loadMembership(
+			context.Background(),
+			nil,
+			gid.New(gid.NilTenant, coredata.IdentityEntityType),
+			"",
+		)
+		require.NoError(t, err)
+		assert.Nil(t, membership)
+	})
+
+	t.Run("invalid organization id returns parse error", func(t *testing.T) {
+		t.Parallel()
+
+		_, err := a.loadMembership(
+			context.Background(),
+			nil,
+			gid.New(gid.NilTenant, coredata.IdentityEntityType),
+			"not-a-gid",
+		)
+		require.Error(t, err)
+		assert.ErrorContains(t, err, "cannot parse gid")
+	})
+}
+
+func TestAuthorizer_BuildAuditLogEntry(t *testing.T) {
+	t.Parallel()
+
+	tenantID := gid.NewTenantID()
+	orgID := gid.New(tenantID, coredata.OrganizationEntityType)
+	principalID := gid.New(gid.NilTenant, coredata.IdentityEntityType)
+	resourceID := gid.New(tenantID, coredata.FrameworkEntityType)
+	sessionID := gid.New(gid.NilTenant, coredata.SessionEntityType)
+
+	tests := []struct {
+		name          string
+		params        AuthorizeParams
+		resourceAttrs policy.Attributes
+		wantNil       bool
+		wantActorType coredata.AuditLogActorType
+	}{
+		{
+			name: "dry run returns nil",
+			params: AuthorizeParams{
+				Principal: principalID,
+				Resource:  resourceID,
+				Action:    "core:framework:get",
+				DryRun:    true,
+			},
+			resourceAttrs: policy.Attributes{
+				"organization_id": orgID.String(),
+			},
+			wantNil: true,
+		},
+		{
+			name: "missing organization id returns nil",
+			params: AuthorizeParams{
+				Principal: principalID,
+				Resource:  resourceID,
+				Action:    "core:framework:get",
+			},
+			resourceAttrs: policy.Attributes{
+				"id": resourceID.String(),
+			},
+			wantNil: true,
+		},
+		{
+			name: "unparseable organization id returns nil",
+			params: AuthorizeParams{
+				Principal: principalID,
+				Resource:  resourceID,
+				Action:    "core:framework:get",
+			},
+			resourceAttrs: policy.Attributes{
+				"organization_id": "invalid-gid",
+			},
+			wantNil: true,
+		},
+		{
+			name: "session present sets user actor type",
+			params: AuthorizeParams{
+				Principal: principalID,
+				Resource:  resourceID,
+				Action:    "core:framework:get",
+				Session:   &sessionID,
+			},
+			resourceAttrs: policy.Attributes{
+				"organization_id": orgID.String(),
+			},
+			wantActorType: coredata.AuditLogActorTypeUser,
+		},
+		{
+			name: "nil session sets api key actor type",
+			params: AuthorizeParams{
+				Principal: principalID,
+				Resource:  resourceID,
+				Action:    "core:framework:get",
+			},
+			resourceAttrs: policy.Attributes{
+				"organization_id": orgID.String(),
+			},
+			wantActorType: coredata.AuditLogActorTypeAPIKey,
+		},
+	}
+
+	for _, tt := range tests {
+		tt := tt
+		t.Run(tt.name, func(t *testing.T) {
+			t.Parallel()
+
+			a := &Authorizer{
+				logger: log.NewLogger(log.WithOutput(io.Discard)),
+			}
+
+			entry := a.buildAuditLogEntry(context.Background(), tt.params, tt.resourceAttrs)
+			if tt.wantNil {
+				assert.Nil(t, entry)
+
+				return
+			}
+
+			require.NotNil(t, entry)
+			assert.Equal(t, tt.wantActorType, entry.ActorType)
+			assert.Equal(t, tt.params.Principal, entry.ActorID)
+			assert.Equal(t, tt.params.Resource, entry.ResourceID)
+			assert.Equal(t, tt.params.Action, entry.Action)
+		})
+	}
+}
+
+func TestAuthorizer_WrappedInternalErrors(t *testing.T) {
+	t.Parallel()
+
+	a := &Authorizer{
+		logger: log.NewLogger(log.WithOutput(io.Discard)),
+	}
+
+	queryErr := errors.New("query failed")
+	tx := &errorTx{queryErr: queryErr}
+	principalID := gid.New(gid.NilTenant, coredata.IdentityEntityType)
+	membershipID := gid.New(gid.NewTenantID(), coredata.MembershipEntityType)
+	sessionID := gid.New(gid.NilTenant, coredata.SessionEntityType)
+	resourceOrgID := gid.New(gid.NewTenantID(), coredata.OrganizationEntityType).String()
+
+	t.Run("load membership wraps load errors", func(t *testing.T) {
+		t.Parallel()
+
+		_, err := a.loadMembership(context.Background(), tx, principalID, resourceOrgID)
+		require.Error(t, err)
+		assert.ErrorContains(t, err, "cannot load active membership")
+	})
+
+	t.Run("get active child session wraps load errors", func(t *testing.T) {
+		t.Parallel()
+
+		_, err := a.getActiveChildSessionForMembership(
+			context.Background(),
+			tx,
+			sessionID,
+			membershipID,
+		)
+		require.Error(t, err)
+		assert.ErrorContains(t, err, "cannot load child session")
+	})
+
+	t.Run("check assumption wraps non-assumption errors", func(t *testing.T) {
+		t.Parallel()
+
+		err := a.checkAssumption(
+			context.Background(),
+			tx,
+			principalID,
+			&sessionID,
+			&coredata.Membership{ID: membershipID},
+			false,
+		)
+		require.Error(t, err)
+		assert.ErrorContains(t, err, "cannot get active child session for membership")
+
+		_, ok := errors.AsType[*ErrAssumptionRequired](err)
+		assert.False(t, ok)
+	})
+
+	t.Run("build principal attributes wraps load errors", func(t *testing.T) {
+		t.Parallel()
+
+		_, err := a.buildPrincipalAttributes(context.Background(), tx, principalID, nil)
+		require.Error(t, err)
+		assert.ErrorContains(t, err, "cannot load principal attributes")
+	})
+
+	t.Run("load resource attributes by type wraps load errors", func(t *testing.T) {
+		t.Parallel()
+
+		resourceID := gid.New(gid.NewTenantID(), coredata.FrameworkEntityType)
+
+		_, err := a.loadResourceAttributesByType(context.Background(), tx, []gid.GID{resourceID})
+		require.Error(t, err)
+		assert.ErrorContains(t, err, "cannot load batched resource attributes")
+	})
+}
+
+type errorRow struct {
+	err error
+}
+
+func (r *errorRow) Scan(...any) error {
+	return r.err
+}
+
+type errorTx struct {
+	queryErr error
+}
+
+var _ pg.Tx = (*errorTx)(nil)
+
+func (tx *errorTx) Exec(context.Context, string, ...any) (pgconn.CommandTag, error) {
+	return pgconn.CommandTag{}, tx.queryErr
+}
+
+func (tx *errorTx) Query(context.Context, string, ...any) (pgx.Rows, error) {
+	return nil, tx.queryErr
+}
+
+func (tx *errorTx) QueryRow(context.Context, string, ...any) pgx.Row {
+	return &errorRow{err: tx.queryErr}
+}
+
+func (tx *errorTx) CopyFrom(context.Context, pgx.Identifier, []string, pgx.CopyFromSource) (int64, error) {
+	return 0, tx.queryErr
+}
+
+func (tx *errorTx) SendBatch(context.Context, *pgx.Batch) pgx.BatchResults {
+	return nil
+}
+
+func (tx *errorTx) Savepoint(context.Context, pg.ExecFunc[pg.Tx]) error {
+	return tx.queryErr
+}