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:

1. Sign in or create an account at maton.ai
2. Go to maton.ai/settings
3. Copy your API key
4. 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

Troubleshooting: API Key Issues

CLI:

1. Check your auth state:

maton whoami

1. Verify the API key is valid by listing connections:

maton connection list

Manual:

1. Check that the MATON_API_KEY environment variable is set:

echo $MATON_API_KEY

1. 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

1. 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

Resources

• Calendar API Overview
• List Calendars
• List Events
• Get Event
• Insert Event
• Update Event
• Delete Event
• Quick Add Event
• Free/Busy Query
• Maton CLI Manual
• Maton Community
• Maton Support