babybuddy-mcp

An MCP server for the Baby Buddy baby tracking application. Connect AI assistants to your babybuddy instance to log and query feedings, sleep, diaper changes, and more.

Built with FastMCP and designed to run alongside babybuddy in Docker.

Requirements

• mise (for local development)

• Python 3.13+

• A running babybuddy instance with API access

Related MCP server: MCP Nightscout

Setup

1. Get your API token

1. Log in to your babybuddy web UI

2. Click your username in the top-right corner → Settings

3. Copy the API Key shown on the page

2. Configure environment

cp .env.example .env

Edit .env:

BABYBUDDY_URL=http://localhost:8000   # URL of your babybuddy instance
BABYBUDDY_TOKEN=your-api-key-here     # Token from step 1
MCP_TRANSPORT=http                    # "http" for Docker, "stdio" for Claude Desktop
MCP_PORT=8080

Running with Docker

docker compose up --build

The MCP server will be available at http://localhost:8080/mcp/.

If babybuddy is running on the same Docker network, set BABYBUDDY_URL to use its service name (e.g. http://babybuddy:8000).

Connecting to Claude Desktop (stdio mode)

Set MCP_TRANSPORT=stdio in .env, then add to your Claude Desktop claude_desktop_config.json:

{
  "mcpServers": {
    "babybuddy": {
      "command": "mise",
      "args": ["x", "python@3.13", "--", "uv", "run", "python", "-m", "babybuddy_mcp"],
      "cwd": "/path/to/babybuddy-mcp",
      "env": {
        "BABYBUDDY_URL": "http://localhost:8000",
        "BABYBUDDY_TOKEN": "your-api-key-here",
        "MCP_TRANSPORT": "stdio"
      }
    }
  }
}

Connecting via HTTP transport

Add to your MCP client config:

{
  "mcpServers": {
    "babybuddy": {
      "url": "http://localhost:8080/mcp/"
    }
  }
}

Available Tools

Tools are organized by domain with namespaced names (e.g. feedings_list_feedings).

Most list_* tools accept tags and ordering filters where the Baby Buddy API supports them; create_note/update_note accept an image_path to attach an image. Children and tags are addressed by their slug (from list_children / list_tags), not numeric ID.

Environment Variables

Development

# Install tools and dependencies
mise install
mise run install

# Run tests
mise run test

# Lint
mise run lint

# Type check
mise run typecheck

Example prompts

• "Log a feeding for Alice — she had breast milk from the left breast from 2pm to 2:25pm today"

• "How many times did Alice eat yesterday?"

• "Record a diaper change for Alice at 3pm — wet only"

• "Start a sleep timer for Alice"

• "Alice just woke up, end her sleep timer and log it"

• "What was Alice's weight at her last checkup?"