Google Calendar Scheduler

Access Google Calendar via the Google Calendar API with OAuth authentication. Check calendars, find free time, schedule meetings, and update events.

This skill uses ClawLink for hosted connection flows and credentials so you do not need to configure Google Calendar API access yourself.

Setup in 3 Steps

How It Works

┌─────────────────┐     ┌──────────────┐     ┌──────────────────┐
│   OpenClaw      │────▶│   ClawLink   │────▶│ Google Calendar  │
│   (User Chat)   │     │   (OAuth)    │     │   API (REST)     │
└─────────────────┘     └──────────────┘     └──────────────────┘
         │                       │                       │
         │  1. Install Plugin    │                       │
         │  2. Pair Device       │                       │
         │  3. Connect Google Calendar                    │
         │                       │  4. Secure Token      │
         │                       │  5. Proxy Requests    │
         │                       │                       │
         ▼                       ▼                       ▼
   ┌──────────┐           ┌──────────┐           ┌──────────┐
   │  SKILL   │           │ Dashboard│           │ Calendar │
   │  File    │           │ Auth     │           │ Events   │
   └──────────┘           └──────────┘           └──────────┘

Install

Install the verified ClawLink plugin from ClawHub. After the user confirms, complete the full setup so ClawLink tools are visible in the next OpenClaw chat.

openclaw plugins install clawhub:clawlink-plugin
openclaw config set tools.alsoAllow '["clawlink-plugin"]' --strict-json
openclaw gateway restart

Then tell the user: "OpenClaw has been restarted. Send /new as a standalone message to start a fresh chat, then ask for Google Calendar again."

Quick Start

# List calendars
clawlink_call_tool --tool "googlecalendar_list_calendars" --params '{}'

# Get current date/time for timezone-aware scheduling
clawlink_call_tool --tool "googlecalendar_get_current_date_time" --params '{"timezone": "America/New_York"}'

# List events for a specific day
clawlink_call_tool --tool "googlecalendar_events_list" --params '{"calendar_id": "primary", "time_min": "2025-01-15T00:00:00Z", "time_max": "2025-01-16T00:00:00Z"}'

# Find free time slots
clawlink_call_tool --tool "googlecalendar_find_free_slots" --params '{"time_min": "2025-01-15T09:00:00Z", "time_max": "2025-01-15T18:00:00Z", "calendar_ids": ["primary"], "meeting_duration_minutes": 60}'

Authentication

All Google Calendar tool calls are authenticated automatically by ClawLink using the user's connected Google account.

No API key is required in chat. ClawLink stores the OAuth token securely and injects it into every Google Calendar API request on the user's behalf.

Getting Connected

Install the ClawLink plugin (see Install above).
Pair the plugin with clawlink_begin_pairing if it is not configured yet.
Open https://claw-link.dev/dashboard?add=google-calendar and connect Google Calendar.
Call clawlink_list_integrations to verify the connection is active.

Connection Management

List Connections

clawlink_list_integrations

Response: Returns all connected integrations. Look for google-calendar in the list.

Verify Connection

clawlink_list_tools --integration google-calendar

Response: Returns the live tool catalog for Google Calendar.

Reconnect

If Google Calendar tools are missing or the connection shows an error:

Direct the user to https://claw-link.dev/dashboard?add=google-calendar
After they confirm, call clawlink_list_integrations to verify
Then call clawlink_list_tools --integration google-calendar

Security & Permissions

Access is scoped to calendars accessible to the connected Google account.
All write operations require explicit user confirmation. Before executing any event create, update, move, or delete, confirm the intended effect with the user.
Destructive actions (deleting events, clearing calendars) are marked as high-impact and must be confirmed.
Moves and deletions of events with attendees affect other people's calendars — treat these as especially sensitive.

Tool Reference

Calendars

| Tool | Description | Mode | |------|-------------|------| | googlecalendar_list_calendars | List all calendars in the user's calendar list | Read | | googlecalendar_get_calendar | Get a specific calendar's metadata | Read | | googlecalendar_duplicate_calendar | Create a new empty calendar | Write | | googlecalendar_patch_calendar | Update calendar title, description, timezone | Write | | googlecalendar_calendars_delete | Delete a secondary calendar | Write | | googlecalendar_clear_calendar | Delete all events from a calendar | Write |

Events

| Tool | Description | Mode | |------|-------------|------| | googlecalendar_events_list | List events on a calendar with time filtering | Read | | googlecalendar_events_list_all_calendars | List events across all calendars | Read | | googlecalendar_events_get | Get a specific event by ID | Read | | googlecalendar_find_event | Search events by text query and time range | Read | | googlecalendar_create_event | Create a new calendar event | Write | | googlecalendar_update_event | Full update of an existing event | Write | | googlecalendar_patch_event | Partial update of event fields | Write | | googlecalendar_delete_event | Delete an event by ID | Write | | googlecalendar_events_move | Move an event to another calendar | Write | | googlecalendar_events_instances | Get instances of a recurring event | Read |

Scheduling

| Tool | Description | Mode | |------|-------------|------| | googlecalendar_find_free_slots | Find free/busy time slots across calendars | Read | | googlecalendar_get_current_date_time | Get current date and time in a timezone | Read | | googlecalendar_quick_add | Parse natural language to create a simple event | Write |

Attendees

| Tool | Description | Mode | |------|-------------|------| | googlecalendar_remove_attendee | Remove an attendee from an event | Write |

Availability

| Tool | Description | Mode | |------|-------------|------| | googlecalendar_freebusy_query | Get free/busy info for a list of calendars | Read |

Access Control

| Tool | Description | Mode | |------|-------------|------| | googlecalendar_acl_list | List access control rules for a calendar | Read | | googlecalendar_acl_insert | Create an ACL rule (share calendar) | Write | | googlecalendar_acl_delete | Delete an ACL rule | Write |

Code Examples

List today's events

clawlink_call_tool --tool "googlecalendar_events_list" \
  --params '{
    "calendar_id": "primary",
    "time_min": "2025-01-15T00:00:00-05:00",
    "time_max": "2025-01-15T23:59:59-05:00",
    "single_events": true,
    "order_by": "startTime"
  }'

Find free time for a meeting

clawlink_call_tool --tool "googlecalendar_find_free_slots" \
  --params '{
    "time_min": "2025-01-15T09:00:00-05:00",
    "time_max": "2025-01-15T17:00:00-05:00",
    "calendar_ids": ["primary"],
    "meeting_duration_minutes": 60
  }'

Create a meeting event

clawlink_call_tool --tool "googlecalendar_create_event" \
  --params '{
    "calendar_id": "primary",
    "summary": "Team Sync",
    "description": "Weekly team synchronization meeting",
    "start_datetime": "2025-01-15T10:00:00",
    "event_duration_minutes": 60,
    "timezone": "America/New_York",
    "attendees": ["colleague@example.com"]
  }'

Update an event

clawlink_call_tool --tool "googlecalendar_patch_event" \
  --params '{
    "calendar_id": "primary",
    "event_id": "abc123xyz",
    "summary": "Updated Team Sync",
    "start_datetime": "2025-01-15T11:00:00",
    "event_duration_minutes": 90
  }'

Discovery Workflow

Call clawlink_list_integrations to confirm Google Calendar is connected.
Call clawlink_list_tools --integration google-calendar to see the live catalog.
Treat the returned list as the source of truth. Do not guess or assume what tools exist.
If the user describes a capability but the exact tool is unclear, call clawlink_search_tools with a short query and integration google-calendar.
If no Google Calendar tools appear, direct the user to https://claw-link.dev/dashboard?add=google-calendar.

Execution Workflow

┌─────────────────────────────────────────────────────────────┐
│  READ OPERATIONS (Safe)                                     │
│  list → get → find → search → describe → call               │
│                                                             │
│  Example: List calendars → Find free slots → Show options   │
└─────────────────────────────────────────────────────────────┘
                              │
                              ▼
┌─────────────────────────────────────────────────────────────┐
│  WRITE OPERATIONS (Require Confirmation)                    │
│  list → get → describe → preview → confirm → call           │
│                                                             │
│  Example: Preview event creation → User confirms            │
│           → Execute create                                   │
└─────────────────────────────────────────────────────────────┘

For unfamiliar tools, ambiguous requests, or any write action, call clawlink_describe_tool first.
Use the returned guidance, schema, whenToUse, askBefore, safeDefaults, examples, and followups to shape the call.
Prefer read, list, search, and availability operations before writes.
For event changes or other high-impact actions, call clawlink_preview_tool first, then confirm with the user.
Execute with clawlink_call_tool. Pass confirmation only after the preview matches the user's intent.
If the tool call fails, report the real error. Do not invent results or restate the failure as a missing capability unless the live catalog supports that conclusion.

Notes

Timezone-aware scheduling: Always use IANA timezone identifiers (e.g., America/New_York, Europe/London) not abbreviations.
UTC timestamps ending in Z are interpreted in UTC regardless of calendar timezone — use timezone-offset timestamps for local date queries.
Primary calendar is referenced as calendar_id: "primary".
Events with attendees automatically send invitations via Google Calendar.
Deleting or moving events with attendees affects their calendars too — always confirm.
No conflict checking is performed before event creation — use find_free_slots to detect overlaps.

Error Handling

| Status / Error | Meaning | |----------------|---------| | Tool not found | The tool name does not exist in the current catalog. Verify with clawlink_list_tools --integration google-calendar. | | Missing connection | Google Calendar is not connected. Direct the user to https://claw-link.dev/dashboard?add=google-calendar. | | 404 Not Found | Calendar or event does not exist. Verify the calendar_id and event_id. | | 403 Forbidden | Insufficient permissions to access or modify the calendar. | | 400 Bad Request | Invalid datetime format or timezone. Use ISO 8601 with timezone offset. | | Write rejected | User did not confirm a write action. Always confirm before executing event creates, updates, moves, or deletes. |

Troubleshooting: Tools Not Visible

Check that the ClawLink plugin is installed:
```
openclaw plugins list
```
If the plugin is installed but tools are missing, tell the user to send /new as a standalone message to reload the catalog.

If a fresh chat does not help, run:

openclaw config set tools.alsoAllow '["clawlink-plugin"]' --strict-json
openclaw gateway restart

After restart, tell the user to send /new again and retry.

Troubleshooting: Invalid Tool Call

Ensure the integration slug is exactly google-calendar.
Use clawlink_describe_tool to verify parameter names and types before calling.
For write operations, always call clawlink_preview_tool first.

Resources

Related Skills

Gmail — For email management alongside scheduling
Google Meet — For video conferencing