Agent skill

google-calendar

Interact with Google Calendar - list calendars, view events, create/update/delete events, and find free time. Use when user asks to: check calendar, schedule a meeting, create an event, find available time, list upcoming events, delete or update a calendar event, or respond to meeting invitations. Lightweight alternative to full Google Workspace MCP server with standalone OAuth authentication.

View SKILL.md on GitHub Repository
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Forks 18

Install this agent skill to your Project

npx add-skill https://github.com/sanjay3290/ai-skills/tree/main/skills/google-calendar

Metadata

Additional technical details for this skill

author
sanjay3290
version
1.0

SKILL.md

Google Calendar

Lightweight Google Calendar integration with standalone OAuth authentication. No MCP server required.

⚠️ Requires Google Workspace account. Personal Gmail accounts are not supported.

First-Time Setup

Authenticate with Google (opens browser):

bash
python scripts/auth.py login

Check authentication status:

bash
python scripts/auth.py status

Logout when needed:

bash
python scripts/auth.py logout

Commands

All operations via scripts/gcal.py. Auto-authenticates on first use if not logged in.

List Calendars

bash
python scripts/gcal.py list-calendars

List Events

bash
# List events from primary calendar (default: next 30 days)
python scripts/gcal.py list-events

# List events with specific time range
python scripts/gcal.py list-events --time-min 2024-01-15T00:00:00Z --time-max 2024-01-31T23:59:59Z

# List events from a specific calendar
python scripts/gcal.py list-events --calendar "work@example.com"

# Limit results
python scripts/gcal.py list-events --max-results 10

Get Event Details

bash
python scripts/gcal.py get-event EVENT_ID
python scripts/gcal.py get-event EVENT_ID --calendar "work@example.com"

Create Event

bash
# Basic event
python scripts/gcal.py create-event "Team Meeting" "2024-01-15T10:00:00Z" "2024-01-15T11:00:00Z"

# Event with description and location
python scripts/gcal.py create-event "Team Meeting" "2024-01-15T10:00:00Z" "2024-01-15T11:00:00Z" \
    --description "Weekly sync" --location "Conference Room A"

# Event with attendees
python scripts/gcal.py create-event "Team Meeting" "2024-01-15T10:00:00Z" "2024-01-15T11:00:00Z" \
    --attendees user1@example.com user2@example.com

# Event on specific calendar
python scripts/gcal.py create-event "Meeting" "2024-01-15T10:00:00Z" "2024-01-15T11:00:00Z" \
    --calendar "work@example.com"

Update Event

bash
# Update event title
python scripts/gcal.py update-event EVENT_ID --summary "New Title"

# Update event time
python scripts/gcal.py update-event EVENT_ID --start "2024-01-15T14:00:00Z" --end "2024-01-15T15:00:00Z"

# Update multiple fields
python scripts/gcal.py update-event EVENT_ID \
    --summary "Updated Meeting" --description "New agenda" --location "Room B"

# Update attendees
python scripts/gcal.py update-event EVENT_ID --attendees user1@example.com user3@example.com

Delete Event

bash
python scripts/gcal.py delete-event EVENT_ID
python scripts/gcal.py delete-event EVENT_ID --calendar "work@example.com"

Find Free Time

Find the first available slot for a meeting with specified attendees:

bash
# Find 30-minute slot for yourself
python scripts/gcal.py find-free-time \
    --attendees me \
    --time-min "2024-01-15T09:00:00Z" \
    --time-max "2024-01-15T17:00:00Z" \
    --duration 30

# Find 60-minute slot with multiple attendees
python scripts/gcal.py find-free-time \
    --attendees me user1@example.com user2@example.com \
    --time-min "2024-01-15T09:00:00Z" \
    --time-max "2024-01-19T17:00:00Z" \
    --duration 60

Respond to Event Invitation

bash
# Accept an invitation
python scripts/gcal.py respond-to-event EVENT_ID accepted

# Decline an invitation
python scripts/gcal.py respond-to-event EVENT_ID declined

# Mark as tentative
python scripts/gcal.py respond-to-event EVENT_ID tentative

# Respond without notifying organizer
python scripts/gcal.py respond-to-event EVENT_ID accepted --no-notify

Date/Time Format

All times use ISO 8601 format with timezone:

  • UTC: 2024-01-15T10:30:00Z
  • With offset: 2024-01-15T10:30:00-05:00 (EST)

Calendar ID Format

  • Primary calendar: Use primary or omit the --calendar flag
  • Other calendars: Use the calendar ID from list-calendars (usually an email address)

Token Management

Tokens stored securely using the system keyring:

  • macOS: Keychain
  • Windows: Windows Credential Locker
  • Linux: Secret Service API (GNOME Keyring, KDE Wallet, etc.)

Service name: google-calendar-skill-oauth

Tokens are automatically refreshed when expired using Google's cloud function.

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