Apache-2.0Calendar Operations

Google Calendar

Name: Google Calendar
Author: sanjay3290

By sanjay3290· sanjay3290/ai-skills· 0

Create, view, and manage events in Google Calendar with automatic availability detection.

Installation

1
Make sure Claude is on your device and in your terminal.
Skills load from ~/.claude/skills/ when Claude Code starts up — so you need it on your machine first. If you don't have it yet, install it once with the command below, then run claude in any terminal to verify.
One-time setup
```
npm i -g @anthropic-ai/claude-code
```
Already have it? Skip ahead.

Paste into Claude Code or into your terminal.

Install

git clone ht••••••••••••••••••••••••••••••••••••••••• •••••••••••••••••••••••••• •• ••••• •• ••••••••••••••••••••••••••••••••••••••••••• •• •• •• ••••••••••••••••••••••••••••••••••••••••••••••••••• ••••••••••••••••••••••••••••••••••••••••••••

This copies the whole skill folder into ~/.claude/skills/google-calendar-sanjay3290/ — the SKILL.md plus any scripts, reference docs, or templates the skill ships with. Safe default: works for every skill.

Faster alternative (instruction-only skills)

Skips the clone and grabs only the SKILL.md file. Don't use this if the skill ships Python scripts, reference markdowns, or asset templates — they won't be downloaded and the skill will fail when it tries to load them.

Quick install (SKILL.md only)

mkdir -p ~/.•••••••••••••••••••••••••••••••••••••••• •• •••• ••••• ••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• •• ••••••••••••••••••••••••••••••••••••••••••••••••••••

Restart Claude Code.
Quit and reopen Claude Code (or any other agent that loads from ~/.claude/skills/). New skills are picked up on startup.
Just ask Claude.
Skills auto-activate when your request matches the skill's description — no slash command needed. Trigger phrases live in the skill's own frontmatter; you can read them in the “What this skill does” section above.

Prefer to read the source first? Open on GitHub.

When Claude uses it

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.

What this skill does

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):

python scripts/auth.py login

Check authentication status:

python scripts/auth.py status

Logout when needed:

python scripts/auth.py logout

Commands

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

List Calendars

python scripts/gcal.py list-calendars

List Events

# 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

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

Create Event

# 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

# 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

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:

# 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

# 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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