Content
# Intervals.icu MCP Server
Model Context Protocol (MCP) server for connecting Claude and ChatGPT with the Intervals.icu API. It provides tools for authentication and data retrieval for activities, events, and wellness data.
If you find the Model Context Protocol (MCP) server useful, please consider supporting its continued development with a donation.
## Requirements
- Python 3.12 or higher
- [Model Context Protocol (MCP) Python SDK](https://github.com/modelcontextprotocol/python-sdk)
- httpx
- python-dotenv
## Setup
### 1. Install uv (recommended)
```bash
curl -LsSf https://astral.sh/uv/install.sh | sh
```
### 2. Clone this repository
```bash
git clone https://github.com/mvilanova/intervals-mcp-server.git
cd intervals-mcp-server
```
### 3. Create and activate a virtual environment
```bash
# Create virtual environment with Python 3.12
uv venv --python 3.12
# Activate virtual environment
# On macOS/Linux:
source .venv/bin/activate
# On Windows:
.venv\Scripts\activate
```
### 4. Sync project dependencies
```bash
uv sync
```
### 5. Set up environment variables
Make a copy of `.env.example` and name it `.env` by running the following command:
```bash
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
1. Log in to your Intervals.icu account
2. Go to Settings > API
3. 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
## Updating
This project is actively developed, with new features and fixes added regularly. To stay up to date, follow these steps:
### 1. Pull the latest changes from `main`
> ⚠️ Make sure you don’t have uncommitted changes before running this command.
```bash
git checkout main && git pull
```
### 2. Update Python dependencies
Activate your virtual environment and sync dependencies:
```bash
source .venv/bin/activate
uv sync
```
### Troubleshooting
If Claude Desktop fails due to configuration changes, follow these steps:
1. Delete the existing entry in claude_desktop_config.json.
2. Reconfigure Claude Desktop from the intervals_mcp_server directory:
```bash
mcp install src/intervals_mcp_server/server.py --name "Intervals.icu" --with-editable . --env-file .env
```
## Usage with Claude
### 1. Configure Claude Desktop
To use this server with Claude Desktop, you need to add it to your Claude Desktop configuration.
1. Run the following from the `intervals_mcp_server` directory to configure Claude Desktop:
```bash
mcp install src/intervals_mcp_server/server.py --name "Intervals.icu" --with-editable . --env-file .env
```
2. If you open your Claude Desktop App configuration file `claude_desktop_config.json`, it should look like this:
```json
{
"mcpServers": {
"Intervals.icu": {
"command": "/Users/<USERNAME>/.cargo/bin/uv",
"args": [
"run",
"--with",
"mcp[cli]",
"--with-editable",
"/path/to/intervals-mcp-server",
"mcp",
"run",
"/path/to/intervals-mcp-server/src/intervals_mcp_server/server.py"
],
"env": {
"INTERVALS_API_BASE_URL": "https://intervals.icu/api/v1",
"ATHLETE_ID": "<YOUR_ATHLETE_ID>",
"API_KEY": "<YOUR_API_KEY>",
"LOG_LEVEL": "INFO"
}
}
}
}
```
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
```
3. 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
## Usage with ChatGPT
ChatGPT’s beta MCP connectors can also talk to this server over the SSE transport.
1. Start the server in SSE mode so it exposes the `/sse` and `/messages/` endpoints:
```bash
export FASTMCP_HOST=127.0.0.1 FASTMCP_PORT=8765 MCP_TRANSPORT=sse FASTMCP_LOG_LEVEL=INFO
python src/intervals_mcp_server/server.py
```
The startup log prints the full URLs (for example `http://127.0.0.1:8765/sse`). ChatGPT needs that public URL, so forward the port with a tool such as `ngrok http 8765` if you are not exposing the server directly.
2. In ChatGPT, open **Settings → Features → Custom MCP Connectors** and click **Add**. Fill in:
- **Name**: `Intervals.icu`
- **MCP Server URL**: `https://<your-public-host>/sse`
- **Authentication**: leave as *No authentication* unless you have protected your tunnel.
You can reuse the same `ngrok http 8765` tunnel URL here; just ensure it forwards to the host/port you exported above.
3. Save the connector and open a new chat. ChatGPT will keep the SSE connection open and POST follow-up requests to the `/messages/` endpoint announced by the server. If you restart the MCP server or tunnel, rerun the SSE command and update the connector URL if it changes.
## Development and testing
Install development dependencies and run the test suite with:
```bash
uv sync --all-extras
pytest -v tests
```
### Running the server locally
To start the server manually (useful when developing or testing), run:
```bash
mcp run src/intervals_mcp_server/server.py
```
## License
The GNU General Public License v3.0
## Featured
### Glama.ai
<a href="https://glama.ai/mcp/servers/@mvilanova/intervals-mcp-server">
<img width="380" height="200" src="https://glama.ai/mcp/servers/@mvilanova/intervals-mcp-server/badge" alt="Intervals.icu Server MCP server" />
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