Intervals.icu MCP Server

Model Context Protocol (MCP) server for connecting Claude with the Intervals.icu API. It provides tools for authentication and data retrieval for activities, events, and wellness data.

Requirements

Python 3.10 or higher
Model Context Protocol (MCP) Python SDK
httpx
python-dotenv

Setup

1. Install uv (recommended)

curl -LsSf https://astral.sh/uv/install.sh | sh

2. Clone this repository

git clone https://github.com/mvilanova/intervals-mcp-server.git
cd intervals-mcp-server

3. Create and activate a virtual environment

# Create virtual environment
uv venv

# Activate virtual environment
# On macOS/Linux:
source .venv/bin/activate
# On Windows:
.venv\Scripts\activate

4. Install dependencies

uv pip install -e .

5. Set up environment variables

Make a copy of .env.example and name it .env by running the following command:

cp .env.example .env

Then edit the .env file and set your Intervals.icu athlete id and API key:

API_KEY=your_intervals_api_key_here
ATHLETE_ID=your_athlete_id_here

Getting your Intervals.icu API Key

Log in to your Intervals.icu account
Go to Settings > API
Generate a new API key

Finding your Athlete ID

Your athlete ID is typically visible in the URL when you're logged into Intervals.icu. It looks like:

https://intervals.icu/athlete/i12345/... where i12345 is your athlete ID

Usage

1. Configure Claude Desktop

To use this server with Claude Desktop, you need to add it to your Claude Desktop configuration.

Run the following from the intervals_mcp_server directory to configure Claude Desktop:

mcp install src/intervals_mcp_server/server.py --name "Intervals.icu MCP Server"

If you open your Claude Desktop App configuration file claude_desktop_config.json, it should look like this:

{
  "mcpServers": {
    "Intervals.icu": {
      "command": "uv",
      "args": [
        "run",
        "--with",
        "mcp[cli]",
        "mcp",
        "run",
        "/path/to/intervals-mcp-server/src/intervals_mcp_server/server.py"
      ]
    }
  }
}

Where /path/to/ is the path to the intervals-mcp-server code folder in your system.

If you observe the following error messages when you open Claude Desktop, include the full path to uv in the command key in the claude_desktop_config.json configuration file. You can get the full path by running which uv in the terminal.

2025-04-28T10:21:11.462Z [info] [Intervals.icu MCP Server] Initializing server...
2025-04-28T10:21:11.477Z [error] [Intervals.icu MCP Server] spawn uv ENOENT
2025-04-28T10:21:11.477Z [error] [Intervals.icu MCP Server] spawn uv ENOENT
2025-04-28T10:21:11.481Z [info] [Intervals.icu MCP Server] Server transport closed
2025-04-28T10:21:11.481Z [info] [Intervals.icu MCP Server] Client transport closed

Restart Claude Desktop.

2. Use the MCP server with Claude

Once the server is running and Claude Desktop is configured, you can use the following tools to ask questions about your past and future activities, events, and wellness data.

get_activities: Retrieve a list of activities
get_activity_details: Get detailed information for a specific activity
get_activity_intervals: Get detailed interval data for a specific activity
get_wellness_data: Fetch wellness data
get_events: Retrieve upcoming events (workouts, races, etc.)
get_event_by_id: Get detailed information for a specific event

License

The GNU General Public License v3.0

Intervals.icu MCP Server