Introduction
# Google Calendar Skill
## Overview This skill provides a thin wrapper around the Google Calendar REST API. It lets you: - **list** upcoming events (optionally filtered by time range or query) - **add** a new event with title, start/end time, description, location, and attendees - **update** an existing event by its ID - **delete** an event by its ID
The skill is implemented in Python (`scripts/google_calendar.py`). It expects the following environment variables to be set (you can store them securely with `openclaw secret set`): ``` GOOGLE_CLIENT_ID=… GOOGLE_CLIENT_SECRET=… GOOGLE_REFRESH_TOKEN=… # obtained after OAuth consent GOOGLE_CALENDAR_ID=primary # or the ID of a specific calendar ``` The first time you run the skill you may need to perform an OAuth flow to obtain a refresh token – see the **Setup** section below.
## Commands ``` google-calendar list [--from <ISO> --to <ISO> --max <N>] google-calendar add --title <title> [--start <ISO> --end <ISO>] [--desc <description> --location <loc> --attendees <email1,email2>] google-calendar update --event-id <id> [--title <title> ... other fields] google-calendar delete --event-id <id> ``` All commands return a JSON payload printed to stdout. Errors are printed to stderr and cause a non‑zero exit code.
## Setup 1. **Create a Google Cloud project** and enable the *Google Calendar API*. 2. **Create OAuth credentials** (type *Desktop app*). Note the `client_id` and `client_secret`. 3. Run the helper script to obtain a refresh token: ```bash GOOGLE_CLIENT_ID=… GOOGLE_CLIENT_SECRET=… python3 -m google_calendar.auth ``` It will open a browser (or print a URL you can open elsewhere) and ask you to grant access. After you approve, copy the `refresh_token` it prints. 4. Store the credentials securely: ```bash openclaw secret set GOOGLE_CLIENT_ID <value> openclaw secret set GOOGLE_CLIENT_SECRET <value> openclaw secret set GOOGLE_REFRESH_TOKEN <value> openclaw secret set GOOGLE_CALENDAR_ID primary # optional ``` 5. Install the required Python packages (once): ```bash pip install --user google-auth google-auth-oauthlib google-api-python-client ```
## How it works (brief) The script loads the credentials from the environment, refreshes the access token using the refresh token, builds a `service = build('calendar', 'v3', credentials=creds)`, and then calls the appropriate API method.
## References - Google Calendar API reference: https://developers.google.com/calendar/api/v3/reference - OAuth 2.0 for installed apps: https://developers.google.com/identity/protocols/oauth2/native-app
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**Note:** This skill does not require a GUI; it works entirely via HTTP calls, so it is suitable for headless servers.