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 clientid and clientsecret.
3. Run the helper script to obtain a refresh token:

``bash GOOGLECLIENTID=… GOOGLECLIENTSECRET=… python3 -m googlecalendar.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 refreshtoken` it prints.

1. Store the credentials securely:

``bash openclaw secret set GOOGLECLIENTID <value> openclaw secret set GOOGLECLIENTSECRET <value> openclaw secret set GOOGLEREFRESHTOKEN <value> openclaw secret set GOOGLECALENDARID primary # optional ``

1. 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

Note: This skill does not require a GUI; it works entirely via HTTP calls, so it is suitable for headless servers.