Add webhook subscription MCP tools and N8N operations

Expose webhook subscription CRUD and event listing through the MCP API
(list, get, create, update, delete subscriptions + list events) and add
a new webhook resource to the N8N node with matching operations.

Signed-off-by: Sacha Al Himdani <sacha@getprobo.com>

packages/n8n-node/nodes/Probo/Probo.node.ts

@@ -146,6 +146,11 @@ export class Probo implements INodeType {
 						value: 'vendor',
 						description: 'Manage vendors',
 					},
+					{
+						name: 'Webhook',
+						value: 'webhook',
+						description: 'Manage webhook subscriptions',
+					},
 				],
 				default: 'execute',
 			},

packages/n8n-node/nodes/Probo/actions/index.ts

@@ -27,6 +27,7 @@ import * as user from './user';
 import * as risk from './risk';
 import * as statementOfApplicability from './statementOfApplicability';
 import * as vendor from './vendor';
+import * as webhook from './webhook';
 
 export interface ResourceModule {
 	description: INodeProperties[];
@@ -53,6 +54,7 @@ export const resources: Record<string, ResourceModule> = {
 	risk: risk as ResourceModule,
 	statementOfApplicability: statementOfApplicability as ResourceModule,
 	vendor: vendor as ResourceModule,
+	webhook: webhook as ResourceModule,
 };
 
 export function getAllResourceOperations(): INodeProperties[] {

packages/n8n-node/nodes/Probo/actions/webhook/create.operation.ts

@@ -0,0 +1,114 @@
+// Copyright (c) 2025-2026 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.
+
+import type { INodeProperties, IExecuteFunctions, INodeExecutionData } from 'n8n-workflow';
+import { proboApiRequest } from '../../GenericFunctions';
+
+export const description: INodeProperties[] = [
+	{
+		displayName: 'Organization ID',
+		name: 'organizationId',
+		type: 'string',
+		displayOptions: {
+			show: {
+				resource: ['webhook'],
+				operation: ['create'],
+			},
+		},
+		default: '',
+		description: 'The ID of the organization',
+		required: true,
+	},
+	{
+		displayName: 'Endpoint URL',
+		name: 'endpointUrl',
+		type: 'string',
+		displayOptions: {
+			show: {
+				resource: ['webhook'],
+				operation: ['create'],
+			},
+		},
+		default: '',
+		description: 'The HTTPS endpoint URL that receives webhook events',
+		required: true,
+	},
+	{
+		displayName: 'Selected Events',
+		name: 'selectedEvents',
+		type: 'multiOptions',
+		displayOptions: {
+			show: {
+				resource: ['webhook'],
+				operation: ['create'],
+			},
+		},
+		options: [
+			{ name: 'Meeting Created', value: 'MEETING_CREATED' },
+			{ name: 'Meeting Deleted', value: 'MEETING_DELETED' },
+			{ name: 'Meeting Updated', value: 'MEETING_UPDATED' },
+			{ name: 'Obligation Created', value: 'OBLIGATION_CREATED' },
+			{ name: 'Obligation Deleted', value: 'OBLIGATION_DELETED' },
+			{ name: 'Obligation Updated', value: 'OBLIGATION_UPDATED' },
+			{ name: 'User Created', value: 'USER_CREATED' },
+			{ name: 'User Deleted', value: 'USER_DELETED' },
+			{ name: 'User Updated', value: 'USER_UPDATED' },
+			{ name: 'Vendor Created', value: 'VENDOR_CREATED' },
+			{ name: 'Vendor Deleted', value: 'VENDOR_DELETED' },
+			{ name: 'Vendor Updated', value: 'VENDOR_UPDATED' },
+		],
+		default: [],
+		description: 'The event types to subscribe to',
+		required: true,
+	},
+];
+
+export async function execute(
+	this: IExecuteFunctions,
+	itemIndex: number,
+): Promise<INodeExecutionData> {
+	const organizationId = this.getNodeParameter('organizationId', itemIndex) as string;
+	const endpointUrl = this.getNodeParameter('endpointUrl', itemIndex) as string;
+	const selectedEvents = this.getNodeParameter('selectedEvents', itemIndex) as string[];
+
+	const query = `
+		mutation CreateWebhookSubscription($input: CreateWebhookSubscriptionInput!) {
+			createWebhookSubscription(input: $input) {
+				webhookSubscriptionEdge {
+					node {
+						id
+						endpointUrl
+						signingSecret
+						selectedEvents
+						createdAt
+						updatedAt
+					}
+				}
+			}
+		}
+	`;
+
+	const responseData = await proboApiRequest.call(this, query, {
+		input: {
+			organizationId,
+			endpointUrl,
+			selectedEvents,
+		},
+	});
+
+	return {
+		json: responseData,
+		pairedItem: { item: itemIndex },
+	};
+}

packages/n8n-node/nodes/Probo/actions/webhook/delete.operation.ts

@@ -0,0 +1,57 @@
+// Copyright (c) 2025-2026 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.
+
+import type { INodeProperties, IExecuteFunctions, INodeExecutionData } from 'n8n-workflow';
+import { proboApiRequest } from '../../GenericFunctions';
+
+export const description: INodeProperties[] = [
+	{
+		displayName: 'Webhook Subscription ID',
+		name: 'webhookSubscriptionId',
+		type: 'string',
+		displayOptions: {
+			show: {
+				resource: ['webhook'],
+				operation: ['delete'],
+			},
+		},
+		default: '',
+		description: 'The ID of the webhook subscription to delete',
+		required: true,
+	},
+];
+
+export async function execute(
+	this: IExecuteFunctions,
+	itemIndex: number,
+): Promise<INodeExecutionData> {
+	const webhookSubscriptionId = this.getNodeParameter('webhookSubscriptionId', itemIndex) as string;
+
+	const query = `
+		mutation DeleteWebhookSubscription($input: DeleteWebhookSubscriptionInput!) {
+			deleteWebhookSubscription(input: $input) {
+				deletedWebhookSubscriptionId
+			}
+		}
+	`;
+
+	const responseData = await proboApiRequest.call(this, query, {
+		input: { webhookSubscriptionId },
+	});
+
+	return {
+		json: responseData,
+		pairedItem: { item: itemIndex },
+	};
+}

packages/n8n-node/nodes/Probo/actions/webhook/get.operation.ts

@@ -0,0 +1,61 @@
+// Copyright (c) 2025-2026 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.
+
+import type { INodeProperties, IExecuteFunctions, INodeExecutionData } from 'n8n-workflow';
+import { proboApiRequest } from '../../GenericFunctions';
+
+export const description: INodeProperties[] = [
+	{
+		displayName: 'Webhook Subscription ID',
+		name: 'webhookSubscriptionId',
+		type: 'string',
+		displayOptions: {
+			show: {
+				resource: ['webhook'],
+				operation: ['get'],
+			},
+		},
+		default: '',
+		description: 'The ID of the webhook subscription',
+		required: true,
+	},
+];
+
+export async function execute(
+	this: IExecuteFunctions,
+	itemIndex: number,
+): Promise<INodeExecutionData> {
+	const webhookSubscriptionId = this.getNodeParameter('webhookSubscriptionId', itemIndex) as string;
+
+	const query = `
+		query GetWebhookSubscription($webhookSubscriptionId: ID!) {
+			node(id: $webhookSubscriptionId) {
+				... on WebhookSubscription {
+					id
+					endpointUrl
+					selectedEvents
+					createdAt
+					updatedAt
+				}
+			}
+		}
+	`;
+
+	const responseData = await proboApiRequest.call(this, query, { webhookSubscriptionId });
+
+	return {
+		json: responseData,
+		pairedItem: { item: itemIndex },
+	};
+}

packages/n8n-node/nodes/Probo/actions/webhook/getAll.operation.ts

@@ -0,0 +1,114 @@
+// Copyright (c) 2025-2026 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.
+
+import type { INodeProperties, IExecuteFunctions, INodeExecutionData, IDataObject } from 'n8n-workflow';
+import { proboApiRequestAllItems } from '../../GenericFunctions';
+
+export const description: INodeProperties[] = [
+	{
+		displayName: 'Organization ID',
+		name: 'organizationId',
+		type: 'string',
+		displayOptions: {
+			show: {
+				resource: ['webhook'],
+				operation: ['getAll'],
+			},
+		},
+		default: '',
+		description: 'The ID of the organization',
+		required: true,
+	},
+	{
+		displayName: 'Return All',
+		name: 'returnAll',
+		type: 'boolean',
+		displayOptions: {
+			show: {
+				resource: ['webhook'],
+				operation: ['getAll'],
+			},
+		},
+		default: false,
+		description: 'Whether to return all results or only up to a given limit',
+	},
+	{
+		displayName: 'Limit',
+		name: 'limit',
+		type: 'number',
+		displayOptions: {
+			show: {
+				resource: ['webhook'],
+				operation: ['getAll'],
+				returnAll: [false],
+			},
+		},
+		typeOptions: {
+			minValue: 1,
+		},
+		default: 50,
+		description: 'Max number of results to return',
+	},
+];
+
+export async function execute(
+	this: IExecuteFunctions,
+	itemIndex: number,
+): Promise<INodeExecutionData> {
+	const organizationId = this.getNodeParameter('organizationId', itemIndex) as string;
+	const returnAll = this.getNodeParameter('returnAll', itemIndex) as boolean;
+	const limit = this.getNodeParameter('limit', itemIndex, 50) as number;
+
+	const query = `
+		query GetWebhookSubscriptions($organizationId: ID!, $first: Int, $after: CursorKey) {
+			node(id: $organizationId) {
+				... on Organization {
+					webhookSubscriptions(first: $first, after: $after) {
+						edges {
+							node {
+								id
+								endpointUrl
+								selectedEvents
+								createdAt
+								updatedAt
+							}
+						}
+						pageInfo {
+							hasNextPage
+							endCursor
+						}
+					}
+				}
+			}
+		}
+	`;
+
+	const webhookSubscriptions = await proboApiRequestAllItems.call(
+		this,
+		query,
+		{ organizationId },
+		(response) => {
+			const data = response?.data as IDataObject | undefined;
+			const node = data?.node as IDataObject | undefined;
+			return node?.webhookSubscriptions as IDataObject | undefined;
+		},
+		returnAll,
+		limit,
+	);
+
+	return {
+		json: { webhookSubscriptions },
+		pairedItem: { item: itemIndex },
+	};
+}

packages/n8n-node/nodes/Probo/actions/webhook/getEvents.operation.ts

@@ -0,0 +1,114 @@
+// Copyright (c) 2025-2026 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.
+
+import type { INodeProperties, IExecuteFunctions, INodeExecutionData, IDataObject } from 'n8n-workflow';
+import { proboApiRequestAllItems } from '../../GenericFunctions';
+
+export const description: INodeProperties[] = [
+	{
+		displayName: 'Webhook Subscription ID',
+		name: 'webhookSubscriptionId',
+		type: 'string',
+		displayOptions: {
+			show: {
+				resource: ['webhook'],
+				operation: ['getEvents'],
+			},
+		},
+		default: '',
+		description: 'The ID of the webhook subscription',
+		required: true,
+	},
+	{
+		displayName: 'Return All',
+		name: 'returnAll',
+		type: 'boolean',
+		displayOptions: {
+			show: {
+				resource: ['webhook'],
+				operation: ['getEvents'],
+			},
+		},
+		default: false,
+		description: 'Whether to return all results or only up to a given limit',
+	},
+	{
+		displayName: 'Limit',
+		name: 'limit',
+		type: 'number',
+		displayOptions: {
+			show: {
+				resource: ['webhook'],
+				operation: ['getEvents'],
+				returnAll: [false],
+			},
+		},
+		typeOptions: {
+			minValue: 1,
+		},
+		default: 50,
+		description: 'Max number of results to return',
+	},
+];
+
+export async function execute(
+	this: IExecuteFunctions,
+	itemIndex: number,
+): Promise<INodeExecutionData> {
+	const webhookSubscriptionId = this.getNodeParameter('webhookSubscriptionId', itemIndex) as string;
+	const returnAll = this.getNodeParameter('returnAll', itemIndex) as boolean;
+	const limit = this.getNodeParameter('limit', itemIndex, 50) as number;
+
+	const query = `
+		query GetWebhookEvents($webhookSubscriptionId: ID!, $first: Int, $after: CursorKey) {
+			node(id: $webhookSubscriptionId) {
+				... on WebhookSubscription {
+					events(first: $first, after: $after) {
+						edges {
+							node {
+								id
+								webhookSubscriptionId
+								status
+								response
+								createdAt
+							}
+						}
+						pageInfo {
+							hasNextPage
+							endCursor
+						}
+					}
+				}
+			}
+		}
+	`;
+
+	const events = await proboApiRequestAllItems.call(
+		this,
+		query,
+		{ webhookSubscriptionId },
+		(response) => {
+			const data = response?.data as IDataObject | undefined;
+			const node = data?.node as IDataObject | undefined;
+			return node?.events as IDataObject | undefined;
+		},
+		returnAll,
+		limit,
+	);
+
+	return {
+		json: { events },
+		pairedItem: { item: itemIndex },
+	};
+}

packages/n8n-node/nodes/Probo/actions/webhook/index.ts

@@ -0,0 +1,82 @@
+// Copyright (c) 2025-2026 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.
+
+import type { INodeProperties } from 'n8n-workflow';
+import * as createOp from './create.operation';
+import * as updateOp from './update.operation';
+import * as deleteOp from './delete.operation';
+import * as getOp from './get.operation';
+import * as getAllOp from './getAll.operation';
+import * as getEventsOp from './getEvents.operation';
+
+export const description: INodeProperties[] = [
+	{
+		displayName: 'Operation',
+		name: 'operation',
+		type: 'options',
+		noDataExpression: true,
+		displayOptions: {
+			show: {
+				resource: ['webhook'],
+			},
+		},
+		options: [
+			{
+				name: 'Create',
+				value: 'create',
+				description: 'Create a new webhook subscription',
+				action: 'Create a webhook subscription',
+			},
+			{
+				name: 'Delete',
+				value: 'delete',
+				description: 'Delete a webhook subscription',
+				action: 'Delete a webhook subscription',
+			},
+			{
+				name: 'Get',
+				value: 'get',
+				description: 'Get a webhook subscription',
+				action: 'Get a webhook subscription',
+			},
+			{
+				name: 'Get Events',
+				value: 'getEvents',
+				description: 'Get delivery events for a webhook subscription',
+				action: 'Get webhook delivery events',
+			},
+			{
+				name: 'Get Many',
+				value: 'getAll',
+				description: 'Get many webhook subscriptions',
+				action: 'Get many webhook subscriptions',
+			},
+			{
+				name: 'Update',
+				value: 'update',
+				description: 'Update a webhook subscription',
+				action: 'Update a webhook subscription',
+			},
+		],
+		default: 'create',
+	},
+	...createOp.description,
+	...updateOp.description,
+	...deleteOp.description,
+	...getOp.description,
+	...getAllOp.description,
+	...getEventsOp.description,
+];
+
+export { createOp as create, updateOp as update, deleteOp as delete, getOp as get, getAllOp as getAll, getEventsOp as getEvents };

packages/n8n-node/nodes/Probo/actions/webhook/update.operation.ts

@@ -0,0 +1,107 @@
+// Copyright (c) 2025-2026 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.
+
+import type { INodeProperties, IExecuteFunctions, INodeExecutionData } from 'n8n-workflow';
+import { proboApiRequest } from '../../GenericFunctions';
+
+export const description: INodeProperties[] = [
+	{
+		displayName: 'Webhook Subscription ID',
+		name: 'webhookSubscriptionId',
+		type: 'string',
+		displayOptions: {
+			show: {
+				resource: ['webhook'],
+				operation: ['update'],
+			},
+		},
+		default: '',
+		description: 'The ID of the webhook subscription to update',
+		required: true,
+	},
+	{
+		displayName: 'Endpoint URL',
+		name: 'endpointUrl',
+		type: 'string',
+		displayOptions: {
+			show: {
+				resource: ['webhook'],
+				operation: ['update'],
+			},
+		},
+		default: '',
+		description: 'The HTTPS endpoint URL that receives webhook events',
+	},
+	{
+		displayName: 'Selected Events',
+		name: 'selectedEvents',
+		type: 'multiOptions',
+		displayOptions: {
+			show: {
+				resource: ['webhook'],
+				operation: ['update'],
+			},
+		},
+		options: [
+			{ name: 'Meeting Created', value: 'MEETING_CREATED' },
+			{ name: 'Meeting Deleted', value: 'MEETING_DELETED' },
+			{ name: 'Meeting Updated', value: 'MEETING_UPDATED' },
+			{ name: 'Obligation Created', value: 'OBLIGATION_CREATED' },
+			{ name: 'Obligation Deleted', value: 'OBLIGATION_DELETED' },
+			{ name: 'Obligation Updated', value: 'OBLIGATION_UPDATED' },
+			{ name: 'User Created', value: 'USER_CREATED' },
+			{ name: 'User Deleted', value: 'USER_DELETED' },
+			{ name: 'User Updated', value: 'USER_UPDATED' },
+			{ name: 'Vendor Created', value: 'VENDOR_CREATED' },
+			{ name: 'Vendor Deleted', value: 'VENDOR_DELETED' },
+			{ name: 'Vendor Updated', value: 'VENDOR_UPDATED' },
+		],
+		default: [],
+		description: 'The event types to subscribe to (replaces existing selection)',
+	},
+];
+
+export async function execute(
+	this: IExecuteFunctions,
+	itemIndex: number,
+): Promise<INodeExecutionData> {
+	const webhookSubscriptionId = this.getNodeParameter('webhookSubscriptionId', itemIndex) as string;
+	const endpointUrl = this.getNodeParameter('endpointUrl', itemIndex, '') as string;
+	const selectedEvents = this.getNodeParameter('selectedEvents', itemIndex, []) as string[];
+
+	const query = `
+		mutation UpdateWebhookSubscription($input: UpdateWebhookSubscriptionInput!) {
+			updateWebhookSubscription(input: $input) {
+				webhookSubscription {
+					id
+					endpointUrl
+					selectedEvents
+					createdAt
+					updatedAt
+				}
+			}
+		}
+	`;
+
+	const input: Record<string, unknown> = { webhookSubscriptionId };
+	if (endpointUrl) input.endpointUrl = endpointUrl;
+	if (selectedEvents !== undefined) input.selectedEvents = selectedEvents;
+
+	const responseData = await proboApiRequest.call(this, query, { input });
+
+	return {
+		json: responseData,
+		pairedItem: { item: itemIndex },
+	};
+}

pkg/server/api/mcp/v1/schema.resolvers.go

@@ -3922,3 +3922,129 @@ func (r *Resolver) PublishStatementOfApplicabilityTool(ctx context.Context, req
 		DocumentVersionID: documentVersion.ID,
 	}, nil
 }
+
+func (r *Resolver) ListWebhookSubscriptionsTool(ctx context.Context, req *mcp.CallToolRequest, input *types.ListWebhookSubscriptionsInput) (*mcp.CallToolResult, types.ListWebhookSubscriptionsOutput, error) {
+	r.MustAuthorize(ctx, input.OrganizationID, probo.ActionWebhookSubscriptionList)
+
+	prb := r.ProboService(ctx, input.OrganizationID)
+
+	pageOrderBy := page.OrderBy[coredata.WebhookSubscriptionOrderField]{
+		Field:     coredata.WebhookSubscriptionOrderFieldCreatedAt,
+		Direction: page.OrderDirectionDesc,
+	}
+	if input.OrderBy != nil {
+		pageOrderBy = page.OrderBy[coredata.WebhookSubscriptionOrderField]{
+			Field:     input.OrderBy.Field,
+			Direction: input.OrderBy.Direction,
+		}
+	}
+
+	cursor := types.NewCursor(input.Size, input.Cursor, pageOrderBy)
+
+	page, err := prb.WebhookSubscriptions.ListForOrganizationID(ctx, input.OrganizationID, cursor)
+	if err != nil {
+		panic(fmt.Errorf("cannot list webhook subscriptions: %w", err))
+	}
+
+	return nil, types.NewListWebhookSubscriptionsOutput(page), nil
+}
+
+func (r *Resolver) GetWebhookSubscriptionTool(ctx context.Context, req *mcp.CallToolRequest, input *types.GetWebhookSubscriptionInput) (*mcp.CallToolResult, types.GetWebhookSubscriptionOutput, error) {
+	r.MustAuthorize(ctx, input.ID, probo.ActionWebhookSubscriptionGet)
+
+	prb := r.ProboService(ctx, input.ID)
+
+	subscription, err := prb.WebhookSubscriptions.Get(ctx, input.ID)
+	if err != nil {
+		return nil, types.GetWebhookSubscriptionOutput{}, fmt.Errorf("failed to get webhook subscription: %w", err)
+	}
+
+	return nil, types.GetWebhookSubscriptionOutput{
+		WebhookSubscription: types.NewWebhookSubscription(subscription),
+	}, nil
+}
+
+func (r *Resolver) CreateWebhookSubscriptionTool(ctx context.Context, req *mcp.CallToolRequest, input *types.CreateWebhookSubscriptionInput) (*mcp.CallToolResult, types.CreateWebhookSubscriptionOutput, error) {
+	r.MustAuthorize(ctx, input.OrganizationID, probo.ActionWebhookSubscriptionCreate)
+
+	prb := r.ProboService(ctx, input.OrganizationID)
+
+	subscription, err := prb.WebhookSubscriptions.Create(
+		ctx,
+		probo.CreateWebhookSubscriptionRequest{
+			OrganizationID: input.OrganizationID,
+			EndpointURL:    input.EndpointURL,
+			SelectedEvents: input.SelectedEvents,
+		},
+	)
+	if err != nil {
+		return nil, types.CreateWebhookSubscriptionOutput{}, fmt.Errorf("failed to create webhook subscription: %w", err)
+	}
+
+	return nil, types.CreateWebhookSubscriptionOutput{
+		WebhookSubscription: types.NewWebhookSubscription(subscription),
+	}, nil
+}
+
+func (r *Resolver) UpdateWebhookSubscriptionTool(ctx context.Context, req *mcp.CallToolRequest, input *types.UpdateWebhookSubscriptionInput) (*mcp.CallToolResult, types.UpdateWebhookSubscriptionOutput, error) {
+	r.MustAuthorize(ctx, input.ID, probo.ActionWebhookSubscriptionUpdate)
+
+	prb := r.ProboService(ctx, input.ID)
+
+	subscription, err := prb.WebhookSubscriptions.Update(
+		ctx,
+		probo.UpdateWebhookSubscriptionRequest{
+			WebhookSubscriptionID: input.ID,
+			EndpointURL:           input.EndpointURL,
+			SelectedEvents:        input.SelectedEvents,
+		},
+	)
+	if err != nil {
+		return nil, types.UpdateWebhookSubscriptionOutput{}, fmt.Errorf("failed to update webhook subscription: %w", err)
+	}
+
+	return nil, types.UpdateWebhookSubscriptionOutput{
+		WebhookSubscription: types.NewWebhookSubscription(subscription),
+	}, nil
+}
+
+func (r *Resolver) DeleteWebhookSubscriptionTool(ctx context.Context, req *mcp.CallToolRequest, input *types.DeleteWebhookSubscriptionInput) (*mcp.CallToolResult, types.DeleteWebhookSubscriptionOutput, error) {
+	r.MustAuthorize(ctx, input.ID, probo.ActionWebhookSubscriptionDelete)
+
+	prb := r.ProboService(ctx, input.ID)
+
+	err := prb.WebhookSubscriptions.Delete(ctx, input.ID)
+	if err != nil {
+		return nil, types.DeleteWebhookSubscriptionOutput{}, fmt.Errorf("failed to delete webhook subscription: %w", err)
+	}
+
+	return nil, types.DeleteWebhookSubscriptionOutput{
+		DeletedWebhookSubscriptionID: input.ID,
+	}, nil
+}
+
+func (r *Resolver) ListWebhookEventsTool(ctx context.Context, req *mcp.CallToolRequest, input *types.ListWebhookEventsInput) (*mcp.CallToolResult, types.ListWebhookEventsOutput, error) {
+	r.MustAuthorize(ctx, input.WebhookSubscriptionID, probo.ActionWebhookSubscriptionGet)
+
+	prb := r.ProboService(ctx, input.WebhookSubscriptionID)
+
+	pageOrderBy := page.OrderBy[coredata.WebhookEventOrderField]{
+		Field:     coredata.WebhookEventOrderFieldCreatedAt,
+		Direction: page.OrderDirectionDesc,
+	}
+	if input.OrderBy != nil {
+		pageOrderBy = page.OrderBy[coredata.WebhookEventOrderField]{
+			Field:     input.OrderBy.Field,
+			Direction: input.OrderBy.Direction,
+		}
+	}
+
+	cursor := types.NewCursor(input.Size, input.Cursor, pageOrderBy)
+
+	page, err := prb.WebhookSubscriptions.ListEventsForSubscriptionID(ctx, input.WebhookSubscriptionID, cursor)
+	if err != nil {
+		panic(fmt.Errorf("cannot list webhook events: %w", err))
+	}
+
+	return nil, types.NewListWebhookEventsOutput(page), nil
+}

pkg/server/api/mcp/v1/specification.yaml

@@ -5950,6 +5950,284 @@ components:
           format: date-time
           description: Update timestamp
 
+    WebhookEventType:
+      type: string
+      enum:
+        - "meeting:created"
+        - "meeting:updated"
+        - "meeting:deleted"
+        - "vendor:created"
+        - "vendor:updated"
+        - "vendor:deleted"
+        - "user:created"
+        - "user:updated"
+        - "user:deleted"
+        - "obligation:created"
+        - "obligation:updated"
+        - "obligation:deleted"
+      go.probo.inc/mcpgen/type: go.probo.inc/probo/pkg/coredata.WebhookEventType
+
+    WebhookEventStatus:
+      type: string
+      enum:
+        - PENDING
+        - SUCCEEDED
+        - FAILED
+      go.probo.inc/mcpgen/type: go.probo.inc/probo/pkg/coredata.WebhookEventStatus
+
+    WebhookSubscriptionOrderField:
+      type: string
+      enum:
+        - CREATED_AT
+      go.probo.inc/mcpgen/type: go.probo.inc/probo/pkg/coredata.WebhookSubscriptionOrderField
+
+    WebhookSubscriptionOrderBy:
+      type: object
+      required:
+        - field
+        - direction
+      properties:
+        field:
+          $ref: "#/components/schemas/WebhookSubscriptionOrderField"
+          description: Webhook subscription order field
+        direction:
+          $ref: "#/components/schemas/OrderDirection"
+          description: Order direction
+
+    WebhookEventOrderField:
+      type: string
+      enum:
+        - CREATED_AT
+      go.probo.inc/mcpgen/type: go.probo.inc/probo/pkg/coredata.WebhookEventOrderField
+
+    WebhookEventOrderBy:
+      type: object
+      required:
+        - field
+        - direction
+      properties:
+        field:
+          $ref: "#/components/schemas/WebhookEventOrderField"
+          description: Webhook event order field
+        direction:
+          $ref: "#/components/schemas/OrderDirection"
+          description: Order direction
+
+    WebhookSubscription:
+      type: object
+      required:
+        - id
+        - organization_id
+        - endpoint_url
+        - selected_events
+        - created_at
+        - updated_at
+      properties:
+        id:
+          $ref: "#/components/schemas/GID"
+          description: Webhook subscription ID
+        organization_id:
+          $ref: "#/components/schemas/GID"
+          description: Organization ID
+        endpoint_url:
+          type: string
+          description: The HTTPS endpoint URL that receives webhook events
+        selected_events:
+          type: array
+          items:
+            $ref: "#/components/schemas/WebhookEventType"
+          description: List of event types this subscription listens to
+        created_at:
+          type: string
+          format: date-time
+          description: Creation timestamp
+        updated_at:
+          type: string
+          format: date-time
+          description: Update timestamp
+
+    WebhookEvent:
+      type: object
+      required:
+        - id
+        - webhook_subscription_id
+        - status
+        - created_at
+      properties:
+        id:
+          $ref: "#/components/schemas/GID"
+          description: Webhook event ID
+        webhook_subscription_id:
+          $ref: "#/components/schemas/GID"
+          description: Webhook subscription ID
+        status:
+          $ref: "#/components/schemas/WebhookEventStatus"
+          description: Delivery status
+        response:
+          anyOf:
+            - type: string
+            - type: "null"
+          description: HTTP response body from the endpoint
+        created_at:
+          type: string
+          format: date-time
+          description: Creation timestamp
+
+    ListWebhookSubscriptionsInput:
+      type: object
+      required:
+        - organization_id
+      properties:
+        organization_id:
+          $ref: "#/components/schemas/GID"
+          description: Organization ID
+        order_by:
+          $ref: "#/components/schemas/WebhookSubscriptionOrderBy"
+          description: Order by
+        size:
+          type: integer
+          description: Page size
+        cursor:
+          $ref: "#/components/schemas/CursorKey"
+          description: Page cursor
+
+    ListWebhookSubscriptionsOutput:
+      type: object
+      required:
+        - webhook_subscriptions
+      properties:
+        webhook_subscriptions:
+          type: array
+          items:
+            $ref: "#/components/schemas/WebhookSubscription"
+          description: List of webhook subscriptions
+        next_cursor:
+          anyOf:
+            - $ref: "#/components/schemas/CursorKey"
+            - type: "null"
+          description: Next page cursor
+
+    GetWebhookSubscriptionInput:
+      type: object
+      required:
+        - id
+      properties:
+        id:
+          $ref: "#/components/schemas/GID"
+          description: Webhook subscription ID
+
+    GetWebhookSubscriptionOutput:
+      type: object
+      required:
+        - webhook_subscription
+      properties:
+        webhook_subscription:
+          $ref: "#/components/schemas/WebhookSubscription"
+
+    CreateWebhookSubscriptionInput:
+      type: object
+      required:
+        - organization_id
+        - endpoint_url
+        - selected_events
+      properties:
+        organization_id:
+          $ref: "#/components/schemas/GID"
+          description: Organization ID
+        endpoint_url:
+          type: string
+          description: The HTTPS endpoint URL that receives webhook events
+        selected_events:
+          type: array
+          items:
+            $ref: "#/components/schemas/WebhookEventType"
+          description: List of event types to subscribe to
+
+    CreateWebhookSubscriptionOutput:
+      type: object
+      required:
+        - webhook_subscription
+      properties:
+        webhook_subscription:
+          $ref: "#/components/schemas/WebhookSubscription"
+
+    UpdateWebhookSubscriptionInput:
+      type: object
+      required:
+        - id
+      properties:
+        id:
+          $ref: "#/components/schemas/GID"
+          description: Webhook subscription ID
+        endpoint_url:
+          type: string
+          description: The HTTPS endpoint URL that receives webhook events
+        selected_events:
+          type: array
+          items:
+            $ref: "#/components/schemas/WebhookEventType"
+          description: List of event types to subscribe to
+
+    UpdateWebhookSubscriptionOutput:
+      type: object
+      required:
+        - webhook_subscription
+      properties:
+        webhook_subscription:
+          $ref: "#/components/schemas/WebhookSubscription"
+
+    DeleteWebhookSubscriptionInput:
+      type: object
+      required:
+        - id
+      properties:
+        id:
+          $ref: "#/components/schemas/GID"
+          description: Webhook subscription ID
+
+    DeleteWebhookSubscriptionOutput:
+      type: object
+      required:
+        - deleted_webhook_subscription_id
+      properties:
+        deleted_webhook_subscription_id:
+          $ref: "#/components/schemas/GID"
+          description: Deleted webhook subscription ID
+
+    ListWebhookEventsInput:
+      type: object
+      required:
+        - webhook_subscription_id
+      properties:
+        webhook_subscription_id:
+          $ref: "#/components/schemas/GID"
+          description: Webhook subscription ID
+        order_by:
+          $ref: "#/components/schemas/WebhookEventOrderBy"
+          description: Order by
+        size:
+          type: integer
+          description: Page size
+        cursor:
+          $ref: "#/components/schemas/CursorKey"
+          description: Page cursor
+
+    ListWebhookEventsOutput:
+      type: object
+      required:
+        - webhook_events
+      properties:
+        webhook_events:
+          type: array
+          items:
+            $ref: "#/components/schemas/WebhookEvent"
+          description: List of webhook events
+        next_cursor:
+          anyOf:
+            - $ref: "#/components/schemas/CursorKey"
+            - type: "null"
+          description: Next page cursor
+
     ListMeetingsInput:
       type: object
       required:
@@ -8845,3 +9123,55 @@ tools:
       $ref: "#/components/schemas/ListAuditLogEntriesInput"
     outputSchema:
       $ref: "#/components/schemas/ListAuditLogEntriesOutput"
+  - name: listWebhookSubscriptions
+    description: List all webhook subscriptions for the organization
+    hints:
+      readonly: true
+      idempotent: true
+    inputSchema:
+      $ref: "#/components/schemas/ListWebhookSubscriptionsInput"
+    outputSchema:
+      $ref: "#/components/schemas/ListWebhookSubscriptionsOutput"
+  - name: getWebhookSubscription
+    description: Get a webhook subscription by ID
+    hints:
+      readonly: true
+      idempotent: true
+    inputSchema:
+      $ref: "#/components/schemas/GetWebhookSubscriptionInput"
+    outputSchema:
+      $ref: "#/components/schemas/GetWebhookSubscriptionOutput"
+  - name: createWebhookSubscription
+    description: Create a new webhook subscription for the organization. The endpoint URL must use HTTPS. Selected events determine which events trigger webhook deliveries.
+    hints:
+      readonly: false
+    inputSchema:
+      $ref: "#/components/schemas/CreateWebhookSubscriptionInput"
+    outputSchema:
+      $ref: "#/components/schemas/CreateWebhookSubscriptionOutput"
+  - name: updateWebhookSubscription
+    description: Update a webhook subscription's endpoint URL or selected events
+    hints:
+      readonly: false
+    inputSchema:
+      $ref: "#/components/schemas/UpdateWebhookSubscriptionInput"
+    outputSchema:
+      $ref: "#/components/schemas/UpdateWebhookSubscriptionOutput"
+  - name: deleteWebhookSubscription
+    description: Delete a webhook subscription
+    hints:
+      readonly: false
+      destructive: true
+    inputSchema:
+      $ref: "#/components/schemas/DeleteWebhookSubscriptionInput"
+    outputSchema:
+      $ref: "#/components/schemas/DeleteWebhookSubscriptionOutput"
+  - name: listWebhookEvents
+    description: List webhook delivery events for a subscription. Shows delivery status (PENDING, SUCCEEDED, FAILED) and response details.
+    hints:
+      readonly: true
+      idempotent: true
+    inputSchema:
+      $ref: "#/components/schemas/ListWebhookEventsInput"
+    outputSchema:
+      $ref: "#/components/schemas/ListWebhookEventsOutput"

pkg/server/api/mcp/v1/types/webhook_subscription.go

@@ -0,0 +1,88 @@
+// 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 types
+
+import (
+	"encoding/json"
+
+	"go.probo.inc/probo/pkg/coredata"
+	"go.probo.inc/probo/pkg/page"
+)
+
+func NewWebhookSubscription(w *coredata.WebhookSubscription) *WebhookSubscription {
+	events := make([]coredata.WebhookEventType, len(w.SelectedEvents))
+	copy(events, w.SelectedEvents)
+
+	return &WebhookSubscription{
+		ID:             w.ID,
+		OrganizationID: w.OrganizationID,
+		EndpointURL:    w.EndpointURL,
+		SelectedEvents: events,
+		CreatedAt:      w.CreatedAt,
+		UpdatedAt:      w.UpdatedAt,
+	}
+}
+
+func NewListWebhookSubscriptionsOutput(p *page.Page[*coredata.WebhookSubscription, coredata.WebhookSubscriptionOrderField]) ListWebhookSubscriptionsOutput {
+	subscriptions := make([]*WebhookSubscription, 0, len(p.Data))
+	for _, w := range p.Data {
+		subscriptions = append(subscriptions, NewWebhookSubscription(w))
+	}
+
+	var nextCursor *page.CursorKey
+	if len(p.Data) > 0 {
+		cursorKey := p.Data[len(p.Data)-1].CursorKey(p.Cursor.OrderBy.Field)
+		nextCursor = &cursorKey
+	}
+
+	return ListWebhookSubscriptionsOutput{
+		NextCursor:           nextCursor,
+		WebhookSubscriptions: subscriptions,
+	}
+}
+
+func NewWebhookEvent(e *coredata.WebhookEvent) *WebhookEvent {
+	var response *string
+	if len(e.Response) > 0 && string(e.Response) != "null" {
+		s := string(json.RawMessage(e.Response))
+		response = &s
+	}
+
+	return &WebhookEvent{
+		ID:                    e.ID,
+		WebhookSubscriptionID: e.WebhookSubscriptionID,
+		Status:                e.Status,
+		Response:              response,
+		CreatedAt:             e.CreatedAt,
+	}
+}
+
+func NewListWebhookEventsOutput(p *page.Page[*coredata.WebhookEvent, coredata.WebhookEventOrderField]) ListWebhookEventsOutput {
+	events := make([]*WebhookEvent, 0, len(p.Data))
+	for _, e := range p.Data {
+		events = append(events, NewWebhookEvent(e))
+	}
+
+	var nextCursor *page.CursorKey
+	if len(p.Data) > 0 {
+		cursorKey := p.Data[len(p.Data)-1].CursorKey(p.Cursor.OrderBy.Field)
+		nextCursor = &cursorKey
+	}
+
+	return ListWebhookEventsOutput{
+		NextCursor:    nextCursor,
+		WebhookEvents: events,
+	}
+}