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// MCP TOOL REFERENCE

GOOGLE CALENDAR TOOLS

29 tools from the Google Calendar MCP Server, categorised by risk level.

View the Google Calendar policy → Token cost: 15,404 tokens →

// ALL 29 GOOGLE CALENDAR TOOLS

READ 16 tools

Read GOOGLECALENDAR_CALENDAR_LIST_INSERT Inserts an existing calendar into the user's calendar list. Read GOOGLECALENDAR_CALENDAR_LIST_UPDATE Updates an existing entry on the user\'s calendar list. Read GOOGLECALENDAR_DUPLICATE_CALENDAR Creates a new, empty Google Calendar with the specified title (summary). Read GOOGLECALENDAR_EVENTS_INSTANCES Returns instances of the specified recurring event. Read GOOGLECALENDAR_EVENTS_LIST Returns events on the specified calendar. Read GOOGLECALENDAR_EVENTS_WATCH Watch for changes to Events resources. Read GOOGLECALENDAR_FIND_EVENT Finds events in a specified Google Calendar using text query, time ranges (event start/end, last modificati... Read GOOGLECALENDAR_FIND_FREE_SLOTS Finds both free and busy time slots in Google Calendars for specified calendars within a defined time range... Read GOOGLECALENDAR_FREE_BUSY_QUERY Returns free/busy information for a set of calendars. Read GOOGLECALENDAR_GET_CALENDAR Retrieves a specific Google Calendar, identified by `calendar_id`, to which the authenticated user has access. Read GOOGLECALENDAR_GET_CURRENT_DATE_TIME Gets the current date and time, allowing for a specific timezone offset. Read GOOGLECALENDAR_LIST_ACL_RULES Retrieves the list of access control rules (ACLs) for a specified calendar, providing the necessary 'rule_i... Read GOOGLECALENDAR_LIST_CALENDARS Retrieves a paginated list of calendars from the user's calendar list, with optional filtering and sync cap... Read GOOGLECALENDAR_SETTINGS_LIST Returns all user settings for the authenticated user. Read GOOGLECALENDAR_SETTINGS_WATCH Watch for changes to Settings resources. Read GOOGLECALENDAR_SYNC_EVENTS Synchronizes Google Calendar events, performing a full sync if no `sync_token` is provided or if a 410 GONE...

WRITE 9 tools

Write GOOGLECALENDAR_ACL_PATCH Updates an access control rule for a calendar using patch semantics (partial update). This allows modifying... Write GOOGLECALENDAR_CALENDARS_UPDATE Updates metadata for a calendar. Write GOOGLECALENDAR_CREATE_EVENT Create a Google Calendar event using `start_datetime` plus `event_duration_hour` and `event_duration_minute... Write GOOGLECALENDAR_EVENTS_MOVE Moves an event to another calendar, i.e., changes an event's organizer. Write GOOGLECALENDAR_PATCH_CALENDAR Partially updates (PATCHes) an existing Google Calendar, modifying only the fields provided; `summary` is m... Write GOOGLECALENDAR_PATCH_EVENT Update specified fields of an existing event in a Google Calendar using patch semantics (array fields like ... Write GOOGLECALENDAR_QUICK_ADD Parses natural language text to quickly create a basic Google Calendar event with its title, date, and time... Write GOOGLECALENDAR_UPDATE_ACL_RULE Updates an access control rule for the specified calendar. Write GOOGLECALENDAR_UPDATE_EVENT Updates an existing event by `event_id` in a Google Calendar; this is a full PUT replacement, so provide al...

DESTRUCTIVE 4 tools

Destructive GOOGLECALENDAR_CALENDARS_DELETE Deletes a secondary calendar. Use calendars.clear for clearing all events on primary calendars. Destructive GOOGLECALENDAR_CLEAR_CALENDAR Clears a primary calendar. This operation deletes all events associated with the primary calendar of an acc... Destructive GOOGLECALENDAR_DELETE_EVENT Deletes a specified event by `event_id` from a Google Calendar (`calendar_id`); this action is idempotent a... Destructive GOOGLECALENDAR_REMOVE_ATTENDEE Removes an attendee from a specified event in a Google Calendar; the calendar and event must exist.

// RUNNING THIS SERVER

The managed route: connect Google Calendar through the PolicyLayer gateway — every tool call above is checked against your policy before it runs, with a full audit log.

DIRECT INSTALL (UNMANAGED) npx -y google-cal-mcp

// FAQ

How many tools does the Google Calendar MCP server have? +

The Google Calendar MCP server exposes 29 tools across 3 categories: Read, Write, Destructive.

How do I enforce policies on Google Calendar tools? +

Route the Google Calendar server through the PolicyLayer gateway. Define allow, deny, or approval rules per tool in the dashboard — they are enforced on every call before it reaches the server.

What risk categories do Google Calendar tools fall into? +

Google Calendar tools are categorised as Read (16), Write (9), Destructive (4). Each category has a recommended default policy.

Let agents act without letting them run wild.

Route your MCP servers through PolicyLayer and every tool call is checked against your policy before it runs — allow, deny, or require approval. Per-identity grants. Full audit log. Live in minutes.

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