Google Calendar Api

---
name: google-calendar
description: |
  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).
compatibility: Requires network access and valid Maton API key
metadata:
  author: maton
  version: "1.0"
  clawdbot:
    emoji: 🧠
    requires:
      env:
        - MATON_API_KEY
---

# Google Calendar

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

## Quick Start

```bash
# List upcoming events
python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://api.maton.ai/google-calendar/calendar/v3/calendars/primary/events?maxResults=10&orderBy=startTime&singleEvents=true')
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.

## Authentication

All requests require the Maton API key in the Authorization header:

```
Authorization: Bearer $MATON_API_KEY
```

**Environment Variable:** Set your API key as `MATON_API_KEY`:

```bash
export MATON_API_KEY="YOUR_API_KEY"
```

### Getting Your API Key

1. Sign in or create an account at [maton.ai](https://maton.ai)
2. Go to [maton.ai/settings](https://maton.ai/settings)
3. Copy your API key

## Connection Management

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

### List Connections

```bash
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

```bash
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

```bash
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:**
```json
{
  "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

```bash
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 with the `Maton-Connection` header:

```bash
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 include this header 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

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

### Get Calendar

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

Use `primary` for the user's primary calendar.

### List Events

```bash
GET /google-calendar/calendar/v3/calendars/primary/events?maxResults=10&orderBy=startTime&singleEvents=true
```

With time bounds:

```bash
GET /google-calendar/calendar/v3/calendars/primary/events?timeMin=2024-01-01T00:00:00Z&timeMax=2024-12-31T23:59:59Z&singleEvents=true&orderBy=startTime
```

### Get Event

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

### Create Event

```bash
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"}
  ]
}
```

### Create All-Day Event

```bash
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

```bash
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"}
}
```

### Patch Event (partial update)

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

{
  "summary": "New Title Only"
}
```

### Delete Event

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

### Quick Add Event (natural language)

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

### Free/Busy Query

```bash
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"}]
}
```

## Code Examples

### JavaScript

```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

```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

- Use `primary` as calendarId for the user's main calendar
- 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

1. Check that the `MATON_API_KEY` environment variable is set:

```bash
echo $MATON_API_KEY
```

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

```bash
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](https://developers.google.com/calendar/api/v3/reference)
- [List Calendars](https://developers.google.com/workspace/calendar/api/v3/reference/calendarList/list)
- [List Events](https://developers.google.com/workspace/calendar/api/v3/reference/events/list)
- [Get Event](https://developers.google.com/workspace/calendar/api/v3/reference/events/get)
- [Insert Event](https://developers.google.com/workspace/calendar/api/v3/reference/events/insert)
- [Update Event](https://developers.google.com/workspace/calendar/api/v3/reference/events/update)
- [Delete Event](https://developers.google.com/workspace/calendar/api/v3/reference/events/delete)
- [Quick Add Event](https://developers.google.com/workspace/calendar/api/v3/reference/events/quickAdd)
- [Free/Busy Query](https://developers.google.com/workspace/calendar/api/v3/reference/freebusy/query)
- [Maton Community](https://discord.com/invite/dBfFAcefs2)
- [Maton Support](mailto:support@maton.ai)