How to integrate Mem0 MCP with Codex

Connect Codex to Mem0 MCP. Store meeting notes from today's call, export all project memories as csv, and more using natural language, with authentication handled for you.

Mem0 logoMem0
Api Key

Mem0 is an AI-powered note-taking and knowledge management platform. It helps you organize, search, and generate content from your personal knowledge base.

47 Tools

Introduction

Codex is one of the most popular coding harnesses out there. And MCP makes the experience even better. With the Mem0 MCP integration, Codex can add memories, run semantic memory search, update and delete memories, manage projects and members, and export memory data, all without leaving the terminal or the app, whichever you prefer.

Also integrate Mem0 with

Why use Composio?

Apart from a managed and hosted MCP server, you will get:

  • CodeAct: A dedicated workbench that allows GPT to write its code to handle complex tool chaining. Reduces to-and-fro with LLMs for frequent tool calling.
  • Large tool responses: Handle them to minimise context rot.
  • Dynamic just-in-time access to 20,000 tools across 1700+ other Apps for cross-app workflows. It loads the tools you need, so GPTs aren't overwhelmed by tools you don't need.

How to install Mem0 MCP in Codex

Run the setup command

Run this command in your terminal to add the Composio MCP server to Codex.

Terminal

It will initiate the authentication in a browser window, authorize Codex to access your Composio account.

Composio authentication page

(Optional) Authenticate with OAuth

To authenticate manually, run the login command to open a browser window and authorize Codex to access your Composio account.

bash
codex mcp login composio

Verify the connection

Run codex mcp list to confirm Composio appears as a registered MCP server.

bash
codex mcp list

Codex App

Codex App follows the same approach as VS Code.

  1. Click ⚙️ on the bottom left → MCP Servers → + Add servers → Streamable HTTP:
  2. Fill the header and Key fields with { "x-consumer-api-key" = "ck_*******" }.
  3. The Key is the Composio API key, that you can find on dashboard.composio.dev
  4. Click on Authenticate and authorize Codex to your Composio account and you're all set.
Codex App MCP setup
  1. Restart and verify if it's there in .codex/config.toml
bash
[mcp_servers.composio]
url = "https://connect.composio.dev/mcp"
http_headers = { "x-consumer-api-key" = "ck_*******" }

Try it

Ask Codex for a Mem0 task. The first time, Composio asks you to connect your Mem0 account.

For example, ask it to:

  • "Store meeting notes from today's call"
  • "Export all project memories as CSV"
  • "Add new user to our team space"

What is the Mem0 MCP server, and what's possible with it?

The Mem0 MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Mem0 account. It provides structured and secure access to your memories, projects, and organizations, so your agent can store, retrieve, search, delete, and organize memories on your behalf.

  • Memory creation: Have your agent save new memories from conversations and associate them with the right user, agent, application, or run.
  • Semantic memory search: Let the agent find relevant memories using natural language questions, optional queries, and structured filters.
  • Memory retrieval and cleanup: Direct your agent to retrieve a specific memory, list memories for an entity, or delete memories that match your criteria.
  • Organization and project management: Instruct your agent to create organizations and projects, then add registered members with the appropriate roles.
  • Operation status tracking: Have your agent check the progress and results of asynchronous Mem0 operations.

Conclusion

You've successfully integrated Mem0 with Codex using Composio's MCP server. Now you can interact with Mem0 directly from your terminal, VS Code, or the Codex App using natural language commands.

Key benefits of this setup:

  • Seamless integration across CLI, VS Code, and standalone app
  • Natural language commands for Mem0 operations
  • Managed authentication through Composio
  • Access to 20,000+ tools across 1700+ apps for cross-app workflows
  • CodeAct workbench for complex tool chaining

Next steps:

  • Try asking Codex to perform various Mem0 operations
  • Explore cross-app workflows by connecting more toolkits
  • Build automation scripts that leverage Codex's AI capabilities
TOOLS

Supported Tools

Every Mem0 action and event your agent gets out of the box.

Add member to project

Adds an existing user to a project (identified by `project_id` within organization `org_id`), assigning a valid system role.

Add new memory records

Adds memory records from messages, optionally inferring structured content.

Add organization member

Adds a new member, who must be a registered user, to an organization, assigning them a specific role.

Create a new agent

Creates a new agent with a unique agent ID and a required name; additional metadata may be assigned by the system.

Create a new agent run

Creates a new agent run in the mem0.

Create a new application

Creates a new application with an application ID and name; ensure the app ID is unique to avoid potential errors or unintended updates.

Create a new organization entry

Creates a new organization entry using the provided name and returns its details.

Create a new user

Creates a new user with the specified unique user ID and optional metadata.

Create memory entry

Lists or searches existing memory entries using required nonempty filters and optional pagination.

Create project

Creates a new project with a given name within an organization that must already exist.

Create webhook

Creates a new webhook for a specific project to receive real-time notifications.

Delete an organization

Permanently deletes an existing organization identified by its unique ID.

Delete memory by id

Permanently deletes a specific memory by its unique ID; ensure the `memory_id` exists as this operation is irreversible.

Delete entity by type and id

Call to permanently and irreversibly hard-delete an existing entity (user, agent, app, or run) and all its associated data, using its type and ID.

Delete memories

Deletes all memories matching specified filter criteria.

Delete memory batch with uuids

Deletes a batch of up to 1000 existing memories, identified by their UUIDs, in a single API call.

Delete project

Permanently deletes a specific project and all its associated data from an organization; this action cannot be undone and requires the project to exist within the specified organization.

Delete project member

Removes an existing member, specified by email address, from a project, immediately revoking their project-specific access; the user is not removed from the organization.

Delete webhook

Deletes a webhook and stops receiving notifications for the specified webhook ID.

Export data based on filters

Creates a memory export job requiring organization and project IDs and at least one user, agent, app or run filter.

List organizations

Retrieves a list of organizations with their details, including IDs, names, ownership, members and plan information.

Fetch details of a specific organization

Fetches comprehensive details for an organization using its `org_id`; the `org_id` must be valid and for an existing organization.

Get list of entity filters

Retrieves entity filters from the entity filters endpoint, with a response modeled as a list of entities.

Get entity by id

Fetches detailed information for an existing entity (user, agent, app, or run) identified by its type and unique ID.

Get event status by event ID

Retrieves a single async event by ID to check its current status and results.

Get memories by entity

Retrieves memories associated with a specified user, agent, app, or run by entity type and ID, with optional pagination.

Get memory export

Retrieves the status and results of a memory export job by its ID.

Get organization members

Fetches a list of members for a specified, existing organization.

Get project details

Fetches comprehensive details for a specified project within an organization.

Get project members

Retrieves all members for a specified project within an organization.

Get projects

Retrieves all projects for a given organization `org_id` to which the caller has access.

Get project webhooks

Retrieves all webhooks configured for a specific project.

Get user memory stats

Retrieves a summary of the authenticated user's memory activity, including total memories created, search events, and add events.

List entities

Retrieves entities with optional organization and project filters; results may be summaries and subject to limits.

Perform semantic search on memories

Searches memories using a natural language query and optional filters, or requests metadata-only search.

Remove a member from the organization

Removes a member from an organization using the organization ID and member's email address.

Retrieve all events for the currently logged in user

Retrieves a paginated list of events for the authenticated user in a read-only operation.

Retrieve list of memory events

Retrieves memory events from the Mem0 platform, providing interaction history and context for AI assistants.

Retrieve memory by id

Retrieves a complete memory entry by its unique identifier; `memory_id` must be valid and for an existing memory.

Retrieve memory history by id

Retrieves the version history of a Mem0 memory by its ID, allowing you to inspect its evolution and audit changes.

Retrieve memory list

Retrieves a paginated list of memories filtered by IDs, metadata, keywords, dates, and other criteria.

Search memories with filters

Searches memories using a required nonempty set of structured filters and an optional natural language query, which defaults to '*'.

Update memory batch with uuid

Updates text for up to 1000 memories in a single batch, using their UUIDs.

Update memory text content

Updates the text and/or metadata of an existing memory identified by its memory ID.

Update organization member role

Updates the role of an existing member to a new valid role within an existing organization.

Update project

Updates a project within an organization using the provided name, description, custom instructions, or custom categories.

Update project member role

Updates the role of a specific member within a designated project, ensuring the new role is valid and recognized by the system.

FAQ

Frequently asked questions

With a standalone Mem0 MCP server, the agents and LLMs can only access a fixed set of Mem0 tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Mem0 and many other apps based on the task at hand, all through a single MCP endpoint.

Yes, you can. Codex fully supports MCP integration. You get structured tool calling, message history handling, and model orchestration while Tool Router takes care of discovering and serving the right Mem0 tools.

Yes, absolutely. You can configure which Mem0 scopes and actions are allowed when connecting your account to Composio. You can also bring your own OAuth credentials or API configuration so you keep full control over what the agent can do.

All sensitive data such as tokens, keys, and configuration is fully encrypted at rest and in transit. Composio is SOC 2 Type 2 compliant and follows strict security practices so your Mem0 data and credentials are handled as safely as possible.

Start with Mem0.It takes 30 seconds.

Managed auth, hosted MCP servers, and every Mem0 tool your agent needs.Free to start.

Start building