How to integrate Google Calendar MCP with Codex

Deletes an access control rule from a Google Calendar.

Retrieves a specific access control rule for a calendar.

Creates an access control rule for a calendar.

Retrieves the list of access control rules (ACLs) for a specified calendar, providing the necessary 'rule_id' values required for updating specific ACL rules.

Partially updates the role or scope of an existing Google Calendar access control rule.

Updates an access control rule for the specified calendar.

Tool to watch for changes to ACL resources.

Execute up to 1000 event mutations (create/patch/delete) in one Google Calendar HTTP batch request with per-item status/results.

Removes a calendar from the user's calendar list, unsubscribing from it without deleting the calendar itself.

Retrieves metadata for a SINGLE specific calendar from the user's calendar list by its calendar ID.

Inserts an existing calendar into the user's calendar list, with optional display settings.

Updates an existing calendar on the user's calendar list using patch semantics.

Updates a calendar list entry's display/subscription settings (color, visibility, reminders, selection) for the authenticated user — does not modify the underlying calendar resource (title, timezone, etc.

Creates a push-notification channel for changes to the user's calendar list.

Deletes a secondary calendar that you own or have delete permissions on.

Full PUT-style update that overwrites all calendar metadata fields; unspecified optional fields are cleared.

Tool to stop watching resources through a notification channel.

Clears a primary calendar by deleting all events from it.

Returns the color definitions for calendars and events.

Creates a new secondary Google Calendar with the specified title and optional settings.

Creates a timed or all-day Google Calendar event and returns it under response_data, without conflict checking.

Deletes an event from the specified calendar.

Creates a new, empty Google Calendar with the specified title (summary).

Retrieves a SINGLE event by its unique event_id (REQUIRED).

Tool to import an event as a private copy to a calendar.

Returns instances of the specified recurring event.

Lists or incrementally synchronizes events from one calendar, defaulting to the connected user's primary calendar.

Lists and deduplicates events across selected calendars or the user's calendar list for a time range.

Moves a default event to another calendar, changing its organizer.

Watch for changes to Events resources.

Finds events in a specified Google Calendar using text, time ranges, and event types.

Queries busy intervals and calculates free gaps for specified calendars, without filtering by meeting duration; the range is limited to 89 days, and calendar errors produce empty free slots marked unreliable.

Queries raw busy intervals for one or more calendars or groups over an exact time range.

Gets canonical metadata for one Google Calendar, defaulting to the authenticated user's primary calendar.

Gets the current date and time, allowing for a specific timezone offset.

Identifies the Google user connected to Calendar from the primary calendar resource.

Lists a page of buildings for a Google Workspace customer, including available addresses, coordinates, and floor names.

Retrieves calendar resources (such as conference rooms) from a Google Workspace domain using the Admin SDK Directory API.

Lists calendars accessible through the connected user's CalendarList, returning IDs and user-specific metadata such as access role, color, visibility, selection, and reminders.

Partially updates (PATCHes) an existing Google Calendar, modifying only the fields provided.

Update specified fields of an existing event in a Google Calendar using patch semantics (array fields like `attendees` are fully replaced if provided); ensure the `calendar_id` and `event_id` are valid and the user has write access to the calendar.

Parses natural language text to quickly create a basic Google Calendar event with its title, date, and time, suitable for simple scheduling; does not support direct attendee addition or recurring events, and `calendar_id` must be valid if not 'primary'.

Removes an attendee from a specified event in a Google Calendar; the calendar and event must exist.

Tool to return a single user setting for the authenticated user.

Lists the authenticated user's calendar settings, returning a page of settings identified by their id fields.

Watch for changes to Settings resources.

Replaces an existing Google Calendar event using its event ID and required start time.