---
title: n8n
description: "Add long-term memory to n8n workflows and AI Agents with the Mem0 community node, no code required."
---

The [`@mem0/n8n-nodes-mem0`](https://www.npmjs.com/package/@mem0/n8n-nodes-mem0) community node brings [Mem0](https://mem0.ai) memory to [n8n](https://n8n.io). Add, search, and manage long-term memories inside any workflow, and use it as a tool for the n8n AI Agent.

## Overview

The node wraps the hosted Mem0 REST API and supports six operations on the **Memory** resource:

| Operation | Endpoint |
| --- | --- |
| **Add** | `POST /v3/memories/add/` |
| **Search** | `POST /v3/memories/search/` |
| **Get** | `GET /v1/memories/{id}/` |
| **Get Many** | `POST /v3/memories/` |
| **Update** | `PUT /v1/memories/{id}/` |
| **Delete** | `DELETE /v1/memories/{id}/` |

It is marked `usableAsTool`, so the n8n AI Agent (Tools Agent) can call it directly to remember and recall information.

## Installation

Install it like any n8n community node:

1. In n8n, go to **Settings → Community Nodes → Install**.
2. Enter `@mem0/n8n-nodes-mem0` and confirm.

The node then appears in the nodes panel under the AI category.

## Authentication

Create a **Mem0 API** credential in n8n:

- **API Key**: from the <a href="https://app.mem0.ai/dashboard/api-keys?utm_source=oss&utm_medium=integration-n8n" rel="nofollow">Mem0 API Key dashboard</a>. Sent as `Authorization: Token <key>`.
- **Base URL**: defaults to `https://api.mem0.ai`.

## Operations

### Add

Extracts and stores memories from one or more messages. Provide at least one entity id (**User ID**, or **Agent ID** / **Run ID** in Additional Fields); the node validates this before calling the API.

Additional Fields also expose:

| Field | Purpose |
| --- | --- |
| **Metadata (JSON)** | Arbitrary JSON attached to each extracted memory |
| **Infer** | On by default. Turn off to store messages verbatim instead of running LLM extraction |
| **Custom Instructions** | Free-text guidance steering what the extractor keeps or ignores, for this call |
| **Custom Categories** | JSON array of `{category: description}` objects, replacing the project-level catalog for this call |

Extraction is asynchronous. **Wait for Completion** (on by default) polls the event until it finishes and returns the resulting memories; turn it off to return immediately with the event ID.

### Search

Semantic search over stored memories. Provide a **Query**, at least one entity id, and an optional **Limit**.

### Get Many

Lists stored memories for the entity ids you supply. Turn on **Return All** to page through every memory automatically; leave it off to fetch a single **Page**. **Page Size** applies either way.

### Entity filters on Search and Get Many

Both operations take **User ID**, **Agent ID**, and **Run ID**. At least one is required (the API rejects a query with no entity scope), and the node fails with a clear message before making the call if you leave all three empty.

Supply several and they are combined with **OR**, so the result set is the union of the three scopes:

```json
{ "OR": [{ "user_id": "alice" }, { "agent_id": "support-bot" }] }
```

This is deliberate. Mem0 indexes each entity separately, so an `AND` across `user_id` and `agent_id` matches nothing even when a memory was written with both. To narrow rather than widen, run one operation per entity id.

### Get / Update / Delete

Operate on a single memory by **Memory ID**. Update accepts new **Text** and/or **Metadata (JSON)**.

## Choosing a `userId`

The `userId` is a stable string you choose to identify whose memories these are. It is not looked up in the dashboard. Common choices are your app's internal user ID, an email, or a UUID. Use the same value across Add, Search, and Get Many so recall works.

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<Snippet file="star-on-github.mdx" />