Google Calendar

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/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/[email protected]/events?maxResults=10&orderBy=startTime&singleEvents=true

With time bounds:

GET /google-calendar/calendar/v3/calendars/[email protected]/events?timeMin=2024-01-01T00:00:00Z&timeMax=2024-12-31T23:59:59Z&singleEvents=true&orderBy=startTime

Example:

maton google-calendar event list -c [email protected] --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": "[email protected]"}
  ]
}

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 [email protected]

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