Mem0 MCP: long-term memory for Claude, ChatGPT and Cursor

Add Mem0 to your AI app

1. 1Click Connect Mem0 free and sign in to Mem0.
2. 2Keep add and search. Switch off the delete tools, because a delete without filters can remove all memories and deleting a user, agent or project wipes its data for good; organization and member tools can go too.
3. 3Add ContextGate to your AI app as a connector or MCP server. The steps for each app are on the Works with page.
4. 4Tell your AI app a preference worth remembering, ask about it in a new chat, then open Activity to see the add and search calls.

Memory your AI app can use

• Store new memories from a conversation, tied to a user, agent, app or run.
• Search memories in plain language, with filters, and fetch one by its ID.
• Export memories into a schema you define.
• Set up projects, agents and users to keep memories apart.

Keep memories from vanishing

• Switch off delete memories, batch delete and entity delete; adding and searching still work.
• Policies can block secrets, so a password mentioned in a chat isn't stored as a memory.
• Activity shows what each AI app saved to Mem0 and what it searched for.

What you get with Mem0 and ContextGate

• Your AI apps can use Mem0Claude, Cursor, ChatGPT and other AI apps reach Mem0 through the one ContextGate connection you add to them.
• You choose which tools they can useSwitch off any Mem0 tool you don't want used. It's hidden from your AI apps and refused if called.
• Every call is checked and recordedYour policies check each call (for example, personal data is hidden and secrets are blocked), and Activity keeps a record of it.

ContextGate sees only the tool calls that go through it, not your AI app's built-in tools or your chats.

Mem0 tools

Examples of what your AI apps can do in Mem0. You'll see the exact list of tools after you connect it.

• Add new memory recordsStores new memory records from a list of messages, optionally inferring structured content; requires association via `agent id`, `user id`, `app id`, or `run id`.
• Add organization memberAdds a new member, who must be a registered user, to an organization, assigning them a specific role.
• Create a new organization entryCreates a new organization entry using the provided name and returns its details.
• Create projectCreates a new project with a given name within an organization that must already exist.
• Delete memoriesDeletes memories matching specified filter criteria; omitting all filters may result in deleting all memories. required: at least one of agent id, user id, app id, or run id must be provided.
• Perform semantic search on memoriesSearches memories semantically using a natural language query (required if `only metadata based search` is false) and/or metadata filters. required: at least one of agent id, user id, app id, or run i
• Retrieve memory by idRetrieves a complete memory entry by its unique identifier; `memory id` must be valid and for an existing memory.
• Search memories with filtersSemantically searches memories using a natural language query and mandatory structured filters, offering options to rerank results and select specific fields; any provided `org id` or `project id` mus
• Add member to projectAdds an existing user to a project (identified by `project id` within organization `org id`), assigning a valid system role.
• Create a new agentCreates a new agent with a unique `agent id` and an optional `name`; additional metadata may be assigned by the system.
• Create a new agent runCreates a new agent run in the mem0.ai system.
• Create a new applicationCreates a new application, allowing metadata to be passed in the request body (not an explicit field in this action's request model); ensure `app id` is unique to avoid potential errors or unintended
• Create a new userCreates a new user with the specified unique `user id` and supports associating `metadata` (not part of the request schema fields).
• Create an export job with schemaInitiates an asynchronous job to export memories, structured by a schema provided in the request body and allowing optional filters.
• Create memory entryLists/searches existing memory entries with filtering and pagination; critically, this action retrieves memories and does *not* create new ones, despite its name.
• Delete an organizationPermanently deletes an existing organization identified by its unique id.
• Delete memory by idPermanently deletes a specific memory by its unique id; ensure the `memory id` exists as this operation is irreversible.
• Delete entity by type and idCall 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 memory batch with uuidsDeletes a batch of up to 1000 existing memories, identified by their uuids, in a single api call.
• Delete projectPermanently 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.