GCAL-MCP
A Model Context Protocol server that provides read-only access to the Google Calendar API v3. It enables users to list calendars, search for events, check free/busy availability, and retrieve calendar settings.
README
gcal-mcp
Dedalus MCP server for Google Calendar API v3 (read + write) using Google OAuth.
Quickstart
cd /Users/annyzhou/Desktop/gcal-mcp
uv sync
Google OAuth (required)
- In Google Cloud Console:
- Enable Google Calendar API
- Create OAuth client ID → Desktop app
- Download the OAuth client JSON
If you skip enabling the Calendar API, Google will return HTTP 403 like:
Google Calendar API has not been used in project ... before or it is disabled.
- Point the repo at your OAuth client JSON:
export GOOGLE_OAUTH_CREDENTIALS="/absolute/path/to/oauth-client.json"
- Run the one-time auth flow (opens a browser, stores tokens locally):
uv run python -c 'from src.gcal_oauth import ensure_gcal_access_token; ensure_gcal_access_token(interactive=True)'
Tokens are stored at ~/.config/gcal-mcp/tokens.json by default (override with GCAL_TOKEN_PATH).
Run the MCP server
export DEDALUS_AS_URL="https://as.dedaluslabs.ai" # optional
export DEDALUS_API_KEY="..." # required when auth is enabled
uv run python -m src.main
Tools
Tools are defined in src/gcal.py (see gcal_tools list).
License
MIT
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