Google Calendar

Google Calendar API integration with managed OAuth. Create events, list calendars, check availability, and manage schedules. Use this skill when users want to interact with Google Calendar. For other third party apps, use the api-gateway skill (https://clawhub.ai/byungkyu/api-gateway).

Audits

Pass

ClawScanPass

Agentic behavior and permission review.

Static analysisPass

Pattern checks against bundled files.

VirusTotalPass

Multi-engine malware detections and file reputation.

Install

openclaw skills install google-calendar-api

Google Calendar

Access the Google Calendar API with managed OAuth authentication. Create and manage events, list calendars, and check availability.

Quick Start

Show today's events on the primary calendar.

CLI:

# Show today's agenda (defaults to primary calendar when -c is omitted)
maton google-calendar agenda --today

maton api '/google-calendar/calendar/v3/calendars/primary/events?singleEvents=true&orderBy=startTime&timeMin=2026-05-05T00:00:00Z&timeMax=2026-05-06T00:00:00Z'

Python:

python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://api.maton.ai/google-calendar/calendar/v3/calendars/primary/events?singleEvents=true&orderBy=startTime&timeMin=2026-05-05T00:00:00Z&timeMax=2026-05-06T00:00:00Z')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Base URL

https://api.maton.ai/google-calendar/{native-api-path}

Maton proxies requests to www.googleapis.com and automatically injects your OAuth token.

Installation

NPM:

npm install -g @maton-ai/cli

Homebrew:

brew install maton-ai/cli/maton

Authentication

CLI:

maton login                          # Opens browser for API key
maton login --interactive            # Skip browser, paste API key directly
maton whoami                         # Show current auth state

Manual:

Sign in or create an account at maton.ai
Go to maton.ai/settings
Copy your API key
Set your API key as MATON_API_KEY:

export MATON_API_KEY="YOUR_API_KEY"

Connection Management

Manage your Google OAuth connections at https://api.maton.ai.

List Connections

CLI:

maton connection list google-calendar --status ACTIVE

maton api -X GET /connections -f app=google-calendar -f status=ACTIVE

Python:

python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://api.maton.ai/connections?app=google-calendar&status=ACTIVE')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Create Connection

CLI:

maton connection create google-calendar

maton api /connections -f app=google-calendar

Python:

python <<'EOF'
import urllib.request, os, json
data = json.dumps({'app': 'google-calendar'}).encode()
req = urllib.request.Request('https://api.maton.ai/connections', data=data, method='POST')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
req.add_header('Content-Type', 'application/json')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Get Connection

CLI:

maton connection view {connection_id}

maton api /connections/{connection_id}

Python:

python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://api.maton.ai/connections/{connection_id}')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Response:

{
  "connection": {
    "connection_id": "{connection_id}",
    "status": "ACTIVE",
    "creation_time": "2025-12-08T07:20:53.488460Z",
    "last_updated_time": "2026-01-31T20:03:32.593153Z",
    "url": "https://connect.maton.ai/?session_token=...",
    "app": "google-calendar",
    "metadata": {}
  }
}

Open the returned url in a browser to complete OAuth authorization.

Delete Connection

CLI:

maton connection delete {connection_id}

maton api -X DELETE /connections/{connection_id}

Python:

python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://api.maton.ai/connections/{connection_id}', method='DELETE')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Specifying Connection

If you have multiple Google Calendar connections, specify which one to use:

CLI:

maton google-calendar event list -c primary --connection {connection_id}

maton api /google-calendar/calendar/v3/calendars/primary/events --connection {connection_id}

Python:

python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://api.maton.ai/google-calendar/calendar/v3/calendars/primary/events')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
req.add_header('Maton-Connection', '{connection_id}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

If you have multiple connections, always specify the connection to ensure requests go to the intended account.

Security & Permissions

Access is scoped to calendars, events, and availability within the connected Google Calendar account.
All write operations require explicit user approval. Before executing any create, update, or delete call, confirm the target resource and intended effect with the user.

API Reference

List Calendars

GET /google-calendar/calendar/v3/users/me/calendarList

Example:

maton google-calendar calendar list

Get Calendar

GET /google-calendar/calendar/v3/calendars/{calendarId}

Example:

maton google-calendar calendar view primary

List Events

GET /google-calendar/calendar/v3/calendars/team@example.com/events?maxResults=10&orderBy=startTime&singleEvents=true

With time bounds:

GET /google-calendar/calendar/v3/calendars/team@example.com/events?timeMin=2024-01-01T00:00:00Z&timeMax=2024-12-31T23:59:59Z&singleEvents=true&orderBy=startTime

Example:

maton google-calendar event list -c team@example.com --time-min 2026-06-17T00:00:00Z --time-max 2026-06-18T00:00:00Z

Get Event

GET /google-calendar/calendar/v3/calendars/primary/events/{eventId}

Example:

maton google-calendar event view EVENT_ID

Create Event

POST /google-calendar/calendar/v3/calendars/primary/events
Content-Type: application/json

{
  "summary": "Team Meeting",
  "description": "Weekly sync",
  "start": {
    "dateTime": "2024-01-15T10:00:00",
    "timeZone": "America/Los_Angeles"
  },
  "end": {
    "dateTime": "2024-01-15T11:00:00",
    "timeZone": "America/Los_Angeles"
  },
  "attendees": [
    {"email": "attendee@example.com"}
  ]
}

Example:

maton google-calendar event create --summary 'Team Meeting' --description 'Weekly sync' --start 2024-01-15T10:00:00-08:00 --end 2024-01-15T11:00:00-08:00 --attendee attendee@example.com

Create All-Day Event

POST /google-calendar/calendar/v3/calendars/primary/events
Content-Type: application/json

{
  "summary": "All Day Event",
  "start": {"date": "2024-01-15"},
  "end": {"date": "2024-01-16"}
}

Update Event

PUT /google-calendar/calendar/v3/calendars/primary/events/{eventId}
Content-Type: application/json

{
  "summary": "Updated Meeting Title",
  "start": {"dateTime": "2024-01-15T10:00:00Z"},
  "end": {"dateTime": "2024-01-15T11:00:00Z"}
}

Example:

maton google-calendar event update EVENT_ID --summary 'Updated Meeting Title' --start 2024-01-15T10:00:00Z --end 2024-01-15T11:00:00Z

Patch Event (partial update)

PATCH /google-calendar/calendar/v3/calendars/primary/events/{eventId}
Content-Type: application/json

{
  "summary": "New Title Only"
}

Example:

maton google-calendar event update EVENT_ID --summary 'New Title Only'

Delete Event

DELETE /google-calendar/calendar/v3/calendars/primary/events/{eventId}

Example:

maton google-calendar event delete EVENT_ID

Quick Add Event (natural language)

POST /google-calendar/calendar/v3/calendars/primary/events/quickAdd?text=Meeting+with+John+tomorrow+at+3pm

Example:

maton google-calendar event quick-add --text 'Meeting with John tomorrow at 3pm'

Free/Busy Query

POST /google-calendar/calendar/v3/freeBusy
Content-Type: application/json

{
  "timeMin": "2024-01-15T00:00:00Z",
  "timeMax": "2024-01-16T00:00:00Z",
  "items": [{"id": "primary"}]
}

Example:

maton google-calendar freebusy query --time-min 2024-01-15T00:00:00Z --time-max 2024-01-16T00:00:00Z

Pagination

Google Calendar uses token-based pagination. The CLI automatically paginates with '--paginate'.

Example:

maton google-calendar event list --paginate

Code Examples

CLI

# Show today's agenda (defaults to primary calendar when -c is omitted)
maton google-calendar agenda --today

# Filter with jq
maton google-calendar event list --json --jq '.items[] | {summary: .summary, start: .start.dateTime}'

# Extract specific fields
maton google-calendar calendar list --json --jq '.items[].summary'

JavaScript

// List events
const response = await fetch(
  'https://api.maton.ai/google-calendar/calendar/v3/calendars/primary/events?maxResults=10&singleEvents=true',
  {
    headers: {
      'Authorization': `Bearer ${process.env.MATON_API_KEY}`
    }
  }
);

// Create event
await fetch(
  'https://api.maton.ai/google-calendar/calendar/v3/calendars/primary/events',
  {
    method: 'POST',
    headers: {
      'Content-Type': 'application/json',
      'Authorization': `Bearer ${process.env.MATON_API_KEY}`
    },
    body: JSON.stringify({
      summary: 'Meeting',
      start: { dateTime: '2024-01-15T10:00:00Z' },
      end: { dateTime: '2024-01-15T11:00:00Z' }
    })
  }
);

Python

import os
import requests

headers = {'Authorization': f'Bearer {os.environ["MATON_API_KEY"]}'}

# List events
events = requests.get(
    'https://api.maton.ai/google-calendar/calendar/v3/calendars/primary/events',
    headers=headers,
    params={'maxResults': 10, 'singleEvents': 'true'}
).json()

# Create event
response = requests.post(
    'https://api.maton.ai/google-calendar/calendar/v3/calendars/primary/events',
    headers=headers,
    json={
        'summary': 'Meeting',
        'start': {'dateTime': '2024-01-15T10:00:00Z'},
        'end': {'dateTime': '2024-01-15T11:00:00Z'}
    }
)

Notes

Times must be in RFC3339 format (e.g., 2024-01-15T10:00:00Z)
For recurring events, use singleEvents=true to expand instances
orderBy=startTime requires singleEvents=true
IMPORTANT: When using curl commands, use curl -g when URLs contain brackets (fields[], sort[], records[]) to disable glob parsing
IMPORTANT: When piping curl output to jq or other commands, environment variables like $MATON_API_KEY may not expand correctly in some shell environments. You may get "Invalid API key" errors when piping.

Error Handling

Status	Meaning
400	Missing Google Calendar connection
401	Invalid or missing Maton API key
429	Rate limited (10 req/sec per account)
4xx/5xx	Passthrough error from Google Calendar API

Troubleshooting: API Key Issues

CLI:

Check your auth state:

maton whoami

Verify the API key is valid by listing connections:

maton connection list

Manual:

Check that the MATON_API_KEY environment variable is set:

echo $MATON_API_KEY

Verify the API key is valid by listing connections:

python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://api.maton.ai/connections')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Troubleshooting: Invalid App Name

Ensure your URL path starts with google-calendar. For example:

Correct: https://api.maton.ai/google-calendar/calendar/v3/calendars/primary/events
Incorrect: https://api.maton.ai/calendar/v3/calendars/primary/events

Google Calendar

Audits

Install

Google Calendar

Quick Start

Base URL

Installation

Authentication

Connection Management

List Connections

Create Connection

Get Connection

Delete Connection

Specifying Connection

Security & Permissions

API Reference

List Calendars

Get Calendar

List Events

Get Event

Create Event

Create All-Day Event

Update Event

Patch Event (partial update)

Delete Event

Quick Add Event (natural language)

Free/Busy Query

Pagination

Code Examples

CLI

JavaScript

Python

Notes

Error Handling

Troubleshooting: API Key Issues

Troubleshooting: Invalid App Name

Resources