Automate Google Calendar events, scheduling, availability checks, and attendee management via Rube MCP (Composio). Create events, find free slots, manage attendees, and list calendars programmatically.
Manages Google Calendar events, finds free slots, and handles attendees through automated scheduling workflows.
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Automate Google Calendar workflows including event creation, scheduling, availability checks, attendee management, and calendar browsing through Composio's Google Calendar toolkit.
Toolkit docs: composio.dev/toolkits/googlecalendar
RUBE_MANAGE_CONNECTIONS with toolkit googlecalendarRUBE_SEARCH_TOOLS first to get current tool schemasGet Rube MCP: Add https://rube.app/mcp as an MCP server in your client configuration. No API keys needed — just add the endpoint and it works.
RUBE_SEARCH_TOOLS respondsRUBE_MANAGE_CONNECTIONS with toolkit googlecalendarWhen to use: User wants to create, update, or delete calendar events
Tool sequence:
GOOGLECALENDAR_LIST_CALENDARS - Identify target calendar ID [Prerequisite]GOOGLECALENDAR_GET_CURRENT_DATE_TIME - Get current time with proper timezone [Optional]GOOGLECALENDAR_FIND_FREE_SLOTS - Check availability before booking [Optional]GOOGLECALENDAR_CREATE_EVENT - Create the event [Required]GOOGLECALENDAR_PATCH_EVENT - Update specific fields of an existing event [Alternative]GOOGLECALENDAR_UPDATE_EVENT - Full replacement update of an event [Alternative]GOOGLECALENDAR_DELETE_EVENT - Delete an event [Optional]Key parameters:
calendar_id: Use 'primary' for main calendar, or specific calendar IDstart_datetime: ISO 8601 format 'YYYY-MM-DDTHH:MM:SS' (NOT natural language)timezone: IANA timezone name (e.g., 'America/New_York', NOT 'EST' or 'PST')event_duration_hour: Hours (0+)event_duration_minutes: Minutes (0-59 only; NEVER use 60+)summary: Event titleattendees: Array of email addresses (NOT names)location: Free-form text for event locationPitfalls:
start_datetime must be ISO 8601; natural language like 'tomorrow' is rejectedevent_duration_minutes max is 59; use event_duration_hour=1 instead of event_duration_minutes=60timezone must be IANA identifier; abbreviations like 'EST', 'PST' are NOT validattendees only accepts email addresses, not names; resolve names firstexclude_organizer=trueWhen to use: User wants to find or browse events on their calendar
Tool sequence:
GOOGLECALENDAR_LIST_CALENDARS - Get available calendars [Prerequisite]GOOGLECALENDAR_FIND_EVENT - Search by title/keyword with time bounds [Required]GOOGLECALENDAR_EVENTS_LIST - List events in a time range [Alternative]GOOGLECALENDAR_EVENTS_INSTANCES - List instances of a recurring event [Optional]Key parameters:
query / q: Free-text search (matches summary, description, location, attendees)timeMin: Lower bound (RFC3339 with timezone offset, e.g., '2024-01-01T00:00:00-08:00')timeMax: Upper bound (RFC3339 with timezone offset)singleEvents: true to expand recurring events into instancesorderBy: 'startTime' (requires singleEvents=true) or 'updated'maxResults: Results per page (max 2500)Pitfalls:
timeMin/timeMax scans the full calendar and can be slowpageToken in response means more results; paginate until absentorderBy='startTime' requires singleEvents=trueWhen to use: User wants to add, remove, or update event attendees
Tool sequence:
GOOGLECALENDAR_FIND_EVENT or GOOGLECALENDAR_EVENTS_LIST - Find the event [Prerequisite]GOOGLECALENDAR_PATCH_EVENT - Add attendees (replaces entire attendees list) [Required]GOOGLECALENDAR_REMOVE_ATTENDEE - Remove a specific attendee by email [Required]Key parameters:
event_id: Unique event identifier (opaque string, NOT the event title)attendees: Full list of attendee emails (PATCH replaces entire list)attendee_email: Email to removesend_updates: 'all', 'externalOnly', or 'none'Pitfalls:
event_id is a technical identifier, NOT the event title; always search first to get the IDPATCH_EVENT attendees field replaces the entire list; include existing attendees to avoid removing themGMAIL_SEARCH_PEOPLE to resolve names to emails before managing attendeesWhen to use: User wants to find available time slots or check busy periods
Tool sequence:
GOOGLECALENDAR_LIST_CALENDARS - Identify calendars to check [Prerequisite]GOOGLECALENDAR_GET_CURRENT_DATE_TIME - Get current time with timezone [Optional]GOOGLECALENDAR_FIND_FREE_SLOTS - Find free intervals across calendars [Required]GOOGLECALENDAR_FREE_BUSY_QUERY - Get raw busy periods for computing gaps [Fallback]GOOGLECALENDAR_CREATE_EVENT - Book a confirmed slot [Required]Key parameters:
items: List of calendar IDs to check (e.g., ['primary'])time_min/time_max: Query interval (defaults to current day if omitted)timezone: IANA timezone for interpreting naive timestampscalendarExpansionMax: Max calendars (1-50)groupExpansionMax: Max members per group (1-100)Pitfalls:
GOOGLECALENDAR_FREE_BUSY_QUERY requires RFC3339 timestamps with timezoneGOOGLECALENDAR_LIST_CALENDARS to enumerate all calendarsGOOGLECALENDAR_FIND_EVENT or GOOGLECALENDAR_EVENTS_LISTGMAIL_SEARCH_PEOPLEGOOGLECALENDAR_GET_CURRENT_DATE_TIME to get current time in user's timezoneGOOGLECALENDAR_EVENTS_LIST returns nextPageToken; iterate until absentGOOGLECALENDAR_LIST_CALENDARS also paginates; use page_tokenevent_duration_minutes max 59; use hours for longer durations| Task | Tool Slug | Key Params |
|---|---|---|
| List calendars | GOOGLECALENDAR_LIST_CALENDARS | max_results |
| Create event | GOOGLECALENDAR_CREATE_EVENT | start_datetime, timezone, summary |
| Update event | GOOGLECALENDAR_PATCH_EVENT | calendar_id, event_id, fields to update |
| Delete event | GOOGLECALENDAR_DELETE_EVENT | calendar_id, event_id |
| Search events | GOOGLECALENDAR_FIND_EVENT | query, timeMin, timeMax |
| List events | GOOGLECALENDAR_EVENTS_LIST | calendarId, timeMin, timeMax |
| Recurring instances | GOOGLECALENDAR_EVENTS_INSTANCES | calendarId, eventId |
| Find free slots | GOOGLECALENDAR_FIND_FREE_SLOTS | items, time_min, time_max, timezone |
| Free/busy query | GOOGLECALENDAR_FREE_BUSY_QUERY | timeMin, timeMax, items |
| Remove attendee | GOOGLECALENDAR_REMOVE_ATTENDEE | event_id, attendee_email |
| Get current time | GOOGLECALENDAR_GET_CURRENT_DATE_TIME | timezone |
| Get calendar | GOOGLECALENDAR_GET_CALENDAR | calendar_id |
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