Limitless Lifelog MCP server

Limitless MCP Server is a tool that connects your Limitless Pendant data to AI applications like Claude and Windsurf through the Model Context Protocol (MCP). It enables AI chat interfaces to interact with your Lifelog data in a structured way, bringing your recorded experiences directly into AI conversations.

Prerequisites

• Node.js (v18 or later)
• npm or yarn
• A Limitless account and API key from https://limitless.ai/developers
• A Limitless Pendant (required for actual data)
• An MCP Client application (Claude, Windsurf, Cursor, ChatWise, etc.)

Installation

1. Clone or download the project
2. Navigate to the project directory:

   cd mcp-limitless-server
   

3. Install dependencies:

   npm install
   

4. Build the code:

   npm run build
   

Configuration

This server requires your Limitless API key as an environment variable. You'll need to configure your MCP client with the server information.

Adding as the first/only server

If your client has an empty mcpServers section, replace it with:

{
  "mcpServers": {
    "limitless": {
      "command": "node",
      "args": ["<FULL_FILE_PATH_TO_DIST_SERVER.js>"],
      "env": {
        "LIMITLESS_API_KEY": "<YOUR_LIMITLESS_API_KEY_HERE>"
      }
    }
  }
}

Adding alongside existing servers

If you already have other servers configured:

{
  "mcpServers": {
    "some_other_server": {
      "command": "...",
      "args": ["..."],
      "env": {
        "EXAMPLE_VAR": "value"
      }
    },
    "limitless": {
      "command": "node",
      "args": ["<FULL_FILE_PATH_TO_DIST_SERVER.js>"],
      "env": {
        "LIMITLESS_API_KEY": "<YOUR_LIMITLESS_API_KEY_HERE>"
      }
    }
  }
}

Important Configuration Notes:

• Replace <FULL_FILE_PATH_TO_DIST_SERVER.js> with the absolute path to the built server script
• Replace <YOUR_LIMITLESS_API_KEY_HERE> with your actual Limitless API key
• MCP config files cannot contain comments - remove any placeholder text

Running the Server

Do not run npm start directly. Instead:

1. Ensure the server is successfully built with npm run build
2. Configure your MCP client as shown above
3. Start your MCP client application, which will launch the server automatically when needed

Available Tools

The server provides these MCP tools for interacting with your Limitless data:

1. limitless_get_lifelog_by_id: Retrieves a specific Pendant recording by ID
2. limitless_list_lifelogs_by_date: Lists Pendant recordings for a specific date
3. limitless_list_lifelogs_by_range: Lists Pendant recordings within a date/time range
4. limitless_list_recent_lifelogs: Lists the most recent Pendant recordings
5. limitless_search_lifelogs: Searches title/content of recent Pendant recordings

Limitations

• Pendant Required: The server requires data from a Limitless Pendant device
• Beta API: The Limitless API is in beta and may experience occasional instability
• Limited Search: The search function only examines a limited number of recent logs (default 20, max 100)
• Timeouts: Large requests might result in timeout errors (server has a 120-second timeout per API call)

How to add this MCP server to Cursor

There are two ways to add an MCP server to Cursor. The most common way is to add the server globally in the ~/.cursor/mcp.json file so that it is available in all of your projects.

If you only need the server in a single project, you can add it to the project instead by creating or adding it to the .cursor/mcp.json file.

Adding an MCP server to Cursor globally

To add a global MCP server go to Cursor Settings > MCP and click "Add new global MCP server".

When you click that button the ~/.cursor/mcp.json file will be opened and you can add your server like this:

{
    "mcpServers": {
        "cursor-rules-mcp": {
            "command": "npx",
            "args": [
                "-y",
                "cursor-rules-mcp"
            ]
        }
    }
}

Adding an MCP server to a project

To add an MCP server to a project you can create a new .cursor/mcp.json file or add it to the existing one. This will look exactly the same as the global MCP server example above.

How to use the MCP server

Once the server is installed, you might need to head back to Settings > MCP and click the refresh button.

The Cursor agent will then be able to see the available tools the added MCP server has available and will call them when it needs to.

You can also explictly ask the agent to use the tool by mentioning the tool name and describing what the function does.