fix(n8n): restore App ID, Includes and Excludes, add App ID filters

Reverts the removal in 2a61fe1a. That commit dropped app_id, includes and
excludes from Add because docs/openapi.json does not declare them on
POST /v3/memories/add/. The schema is incomplete: probing the live endpoint
shows all three are accepted and honoured.

- app_id is persisted and is queryable via /v3/memories/search/ and
  /v3/memories/, so the entity-id guard accepts it again as a valid scope
- includes/excludes demonstrably steer extraction. The same message stored
  three memories unfiltered and one under
  includes: "only record food and diet preferences"

Search and Get Many gain an App ID filter alongside User/Agent/Run. Writing
an app-scoped memory was otherwise unreadable from this node, and app_id is
how the OpenCode and Pi Agent plugins express project scope.

buildEntityFilters now takes the ids as an object rather than four adjacent
positional strings, so a fifth entity is a one-key change.

integrations/n8n-nodes-mem0/README.md

@@ -34,11 +34,11 @@ Two independent controls:
 - **Wait for Completion** (on by default) decides whether the node polls. Turn it off to return immediately with the event ID.
 - **Infer** (on by default, under Additional Fields) decides whether the API runs LLM extraction at all. Turn it off to store the messages verbatim.
 
-**Custom Instructions** and **Custom Categories** (also under Additional Fields) steer what extraction keeps for that call.
+**Custom Instructions**, **Custom Categories**, **Includes**, and **Excludes** (also under Additional Fields) steer what extraction keeps for that call. **Agent ID**, **App ID**, and **Run ID** live there too, and scope the memory alongside (or instead of) **User ID**.
 
 ### Entity filters on Search & Get Many
 
-Both take **User ID**, **Agent ID**, and **Run ID**, and at least one is required — the API rejects a query with no entity scope, and the node fails with a clear message before calling it.
+Both take **User ID**, **Agent ID**, **App ID**, and **Run ID**, and at least one is required — the API rejects a query with no entity scope, and the node fails with a clear message before calling it.
 
 Supplying several combines them with **OR**, giving the union of those scopes. Mem0 indexes each entity separately, so an `AND` across `user_id` and `agent_id` matches nothing even for a memory written with both. To narrow instead of widen, run one operation per entity id.
 
@@ -52,7 +52,7 @@ This node is also **usable as a tool** by n8n's AI Agent node — attach it so a
 
 A typical loop:
 
-1. **Search** memory before answering, filtered by `User ID` (or `Agent ID` / `Run ID`).
+1. **Search** memory before answering, filtered by `User ID` (or `Agent ID` / `App ID` / `Run ID`).
 2. **Add** durable facts after a meaningful exchange.
 
 Memory writes are asynchronous by default; allow a moment after an Add before searching for the same content.

integrations/n8n-nodes-mem0/nodes/Mem0/Mem0.node.ts

@@ -163,6 +163,12 @@ export class Mem0 implements INodeType {
 						type: 'string',
 						default: '',
 					},
+					{
+						displayName: 'App ID',
+						name: 'app_id',
+						type: 'string',
+						default: '',
+					},
 					{
 						displayName: 'Custom Categories',
 						name: 'custom_categories',
@@ -180,6 +186,20 @@ export class Mem0 implements INodeType {
 						description:
 							'Optional instructions that steer what the extractor keeps or ignores',
 					},
+					{
+						displayName: 'Excludes',
+						name: 'excludes',
+						type: 'string',
+						default: '',
+						description: 'Optional: skip memories matching this description',
+					},
+					{
+						displayName: 'Includes',
+						name: 'includes',
+						type: 'string',
+						default: '',
+						description: 'Optional: only extract memories matching this description',
+					},
 					{
 						displayName: 'Infer',
 						name: 'infer',
@@ -221,7 +241,7 @@ export class Mem0 implements INodeType {
 				default: '',
 				displayOptions: { show: { resource: ['memory'], operation: ['search'] } },
 				description:
-					'Restrict the search to this user. Supply at least one of User ID, Agent ID, or Run ID.',
+					'Restrict the search to this user. Supply at least one of User ID, Agent ID, App ID, or Run ID.',
 			},
 			{
 				displayName: 'Agent ID',
@@ -231,6 +251,14 @@ export class Mem0 implements INodeType {
 				displayOptions: { show: { resource: ['memory'], operation: ['search'] } },
 				description: 'Restrict the search to memories scoped to this agent',
 			},
+			{
+				displayName: 'App ID',
+				name: 'appId',
+				type: 'string',
+				default: '',
+				displayOptions: { show: { resource: ['memory'], operation: ['search'] } },
+				description: 'Restrict the search to memories scoped to this app or project',
+			},
 			{
 				displayName: 'Run ID',
 				name: 'runId',
@@ -257,7 +285,7 @@ export class Mem0 implements INodeType {
 				default: '',
 				displayOptions: { show: { resource: ['memory'], operation: ['getAll'] } },
 				description:
-					'Restrict the listing to this user. Supply at least one of User ID, Agent ID, or Run ID.',
+					'Restrict the listing to this user. Supply at least one of User ID, Agent ID, App ID, or Run ID.',
 			},
 			{
 				displayName: 'Agent ID',
@@ -267,6 +295,14 @@ export class Mem0 implements INodeType {
 				displayOptions: { show: { resource: ['memory'], operation: ['getAll'] } },
 				description: 'Restrict the listing to memories scoped to this agent',
 			},
+			{
+				displayName: 'App ID',
+				name: 'appId',
+				type: 'string',
+				default: '',
+				displayOptions: { show: { resource: ['memory'], operation: ['getAll'] } },
+				description: 'Restrict the listing to memories scoped to this app or project',
+			},
 			{
 				displayName: 'Run ID',
 				name: 'runId',
@@ -378,6 +414,7 @@ export class Mem0 implements INodeType {
 					const userId = this.getNodeParameter('userId', i, '') as string;
 					if (userId) body.user_id = userId;
 					if (addFields.agent_id) body.agent_id = addFields.agent_id;
+					if (addFields.app_id) body.app_id = addFields.app_id;
 					if (addFields.run_id) body.run_id = addFields.run_id;
 					if (addFields.metadata) {
 						try {
@@ -411,11 +448,14 @@ export class Mem0 implements INodeType {
 						}
 					}
 
+					if (addFields.includes) body.includes = addFields.includes;
+					if (addFields.excludes) body.excludes = addFields.excludes;
+
 					// API requires at least one entity id — fail clearly instead of a raw 4xx.
-					if (!body.user_id && !body.agent_id && !body.run_id) {
+					if (!body.user_id && !body.agent_id && !body.run_id && !body.app_id) {
 						throw new NodeOperationError(
 							this.getNode(),
-							'Add requires at least one of User ID, Agent ID, or Run ID',
+							'Add requires at least one of User ID, Agent ID, Run ID, or App ID',
 							{ itemIndex: i },
 						);
 					}
@@ -447,9 +487,12 @@ export class Mem0 implements INodeType {
 						top_k: this.getNodeParameter('limit', i, 50) as number,
 					};
 					body.filters = buildEntityFilters(
-						this.getNodeParameter('userId', i, '') as string,
-						this.getNodeParameter('agentId', i, '') as string,
-						this.getNodeParameter('runId', i, '') as string,
+						{
+							user_id: this.getNodeParameter('userId', i, '') as string,
+							agent_id: this.getNodeParameter('agentId', i, '') as string,
+							app_id: this.getNodeParameter('appId', i, '') as string,
+							run_id: this.getNodeParameter('runId', i, '') as string,
+						},
 						this,
 						i,
 					);
@@ -460,9 +503,12 @@ export class Mem0 implements INodeType {
 					const pageSize = this.getNodeParameter('pageSize', i, 50) as number;
 					const body: IDataObject = {
 						filters: buildEntityFilters(
-							this.getNodeParameter('userId', i, '') as string,
-							this.getNodeParameter('agentId', i, '') as string,
-							this.getNodeParameter('runId', i, '') as string,
+							{
+								user_id: this.getNodeParameter('userId', i, '') as string,
+								agent_id: this.getNodeParameter('agentId', i, '') as string,
+								app_id: this.getNodeParameter('appId', i, '') as string,
+								run_id: this.getNodeParameter('runId', i, '') as string,
+							},
 							this,
 							i,
 						),
@@ -529,21 +575,18 @@ export class Mem0 implements INodeType {
 }
 
 function buildEntityFilters(
-	userId: string,
-	agentId: string,
-	runId: string,
+	ids: Record<string, string>,
 	ctx: IExecuteFunctions,
 	itemIndex: number,
 ): IDataObject {
-	const clauses: IDataObject[] = [];
-	if (userId) clauses.push({ user_id: userId });
-	if (agentId) clauses.push({ agent_id: agentId });
-	if (runId) clauses.push({ run_id: runId });
+	const clauses: IDataObject[] = Object.entries(ids)
+		.filter(([, value]) => value)
+		.map(([key, value]) => ({ [key]: value }));
 
 	if (clauses.length === 0) {
 		throw new NodeOperationError(
 			ctx.getNode(),
-			'Provide at least one of User ID, Agent ID, or Run ID',
+			'Provide at least one of User ID, Agent ID, App ID, or Run ID',
 			{ itemIndex },
 		);
 	}

integrations/n8n-nodes-mem0/test/Mem0.node.test.ts

@@ -53,6 +53,44 @@ describe('Mem0 node (offline)', () => {
 		expect(out[0][0].json.error).toMatch(/at least one of User ID/i);
 	});
 
+	it('forwards app id, includes and excludes on Add', async () => {
+		const ctx = makeCtx(
+			'add',
+			{
+				'messages.message': [{ role: 'user', content: 'hi' }],
+				addFields: {
+					app_id: 'p1',
+					includes: 'only food preferences',
+					excludes: 'nothing about vehicles',
+				},
+				userId: 'u1',
+			},
+			async () => ({}),
+		);
+		await run(ctx);
+		expect(ctx.requests[0].body).toMatchObject({
+			app_id: 'p1',
+			includes: 'only food preferences',
+			excludes: 'nothing about vehicles',
+		});
+	});
+
+	it('accepts an app id alone as the entity scope on Add', async () => {
+		const ctx = makeCtx(
+			'add',
+			{
+				'messages.message': [{ role: 'user', content: 'hi' }],
+				addFields: { app_id: 'p1' },
+				userId: '',
+			},
+			async () => ({}),
+			{ continueOnFail: true },
+		);
+		const out: any = await run(ctx);
+		expect(out[0][0].json.error).toBeUndefined();
+		expect(ctx.requests[0].body.app_id).toBe('p1');
+	});
+
 	it('reports a clear error on invalid JSON in Custom Categories', async () => {
 		const ctx = makeCtx(
 			'add',
@@ -103,15 +141,21 @@ describe('Mem0 node (offline)', () => {
 	it('combines entity ids with OR, never AND (entities are stored separately, so AND matches nothing)', async () => {
 		const ctx = makeCtx(
 			'search',
-			{ query: 'x', userId: 'u1', agentId: 'a1', runId: 'r1' },
+			{ query: 'x', userId: 'u1', agentId: 'a1', appId: 'p1', runId: 'r1' },
 			async () => ({ results: [] }),
 		);
 		await run(ctx);
 		expect(ctx.requests[0].body.filters).toEqual({
-			OR: [{ user_id: 'u1' }, { agent_id: 'a1' }, { run_id: 'r1' }],
+			OR: [{ user_id: 'u1' }, { agent_id: 'a1' }, { app_id: 'p1' }, { run_id: 'r1' }],
 		});
 	});
 
+	it.each(['search', 'getAll'])('filters %s by app id alone', async (op) => {
+		const ctx = makeCtx(op, { query: 'x', appId: 'p1' }, async () => ({ results: [] }));
+		await run(ctx);
+		expect(ctx.requests[0].body.filters).toEqual({ app_id: 'p1' });
+	});
+
 	it('filters Get Many by agent id alone', async () => {
 		const ctx = makeCtx('getAll', { agentId: 'a1' }, async () => ({ results: [] }));
 		await run(ctx);