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Google calendar

Skill sanjay3290/ai-skills/skills/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.From its SKILL.md

Install
npx -y skills add sanjay3290/ai-skills --skill google-calendar

Assembled from the repository path, not quoted from the project. Check it against their README if it does not work.

2 things to look at

  • reads credentialsReads from 1 credential source: `google-calendar-skill-oauth`.
  • runs commandsInstructs the agent to run 8 commands, including `python scripts/auth.py login` and 7 more.

What its file declares

Copied from the file, not written here

The file declares its own license as Apache-2.0. That is the author’s claim about this one file, and it is not the same thing as the license GitHub reports for the repository, which is listed with the other numbers below.

SKILL.md

4.5 KB, ~1.1k tokens by cl100k_base, as published. Nobody here has run it

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 "[email protected]"

# 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 "[email protected]"

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 [email protected] [email protected]

# Event on specific calendar
python scripts/gcal.py create-event "Meeting" "2024-01-15T10:00:00Z" "2024-01-15T11:00:00Z" \
    --calendar "[email protected]"

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 [email protected] [email protected]

Delete Event

python scripts/gcal.py delete-event EVENT_ID
python scripts/gcal.py delete-event EVENT_ID --calendar "[email protected]"

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 [email protected] [email protected] \
    --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.

What ships with it: 5 files

35.0 KB alongside SKILL.md, 2 of them executable

scripts/

Gives 0 of the 12 instructions most mcp tooling skills give in ~1.1k tokens

Counted across 780 of the 1,136 authors here whose files we hold, read 2026-09-06

  • Use Zod for input validationin 34 of 780, across 21 files
  • Use stdio for local clientsin 27 of 780, across 10 files
  • Restart Claude Code after configurationin 26 of 780, across 23 files
  • Verify MCP server connection before using toolsin 23 of 780, across 17 files
  • Define input schemas for every toolin 20 of 780, across 11 files
  • Use Streamable HTTP for remote clientsin 18 of 780, across 8 files
  • Pin SDK version in package.jsonin 17 of 780, across 6 files
  • Keep server logic independent of transportin 16 of 780, across 6 files
  • Verify SDK methods against official documentationin 15 of 780, across 5 files
  • Format evaluation results as an XML filein 15 of 780, across 12 files
  • Test servers using the MCP Inspectorin 15 of 780, across 14 files
  • Create ten complex and independent evaluation questionsin 14 of 780, across 11 files

Said here and by no other author read

  • Authenticate with Google before performing operations
  • Use primary or email address for calendar identification
  • Run authentication status check to verify login state

Grouped from the skills themselves: near-identical wordings counted once, and counted by distinct author, so one author publishing three of these counts once. Length counted with cl100k_base; the agent that loads this file may tokenize it differently.

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