Tool to create a new attendee for an existing booking in Cal.com. Use when you need to add an additional participant to a scheduled event.

Adds a new member to a specified team within an organization by creating a team membership.

Adds a new option to an organization's SINGLE_SELECT or MULTI_SELECT attribute. Use this action to extend the available choices for an existing attribute. For example, adding a new department option like "Marketing" to a "Department" attribute. Prerequisites: - The organization must exist and the user must have admin access - The attribute must already exist and be of type SINGLE_SELECT or MULTI_SELECT Common use cases: - Adding new department options to a department selector - Expanding location choices for a location attribute - Creating new priority levels for a priority field Note: While it's recommended to use unique slugs for clarity, the API may allow duplicate slugs.

Cancels an existing and active Cal.com booking using its unique identifier (UID).

Retrieves free/busy availability for a specified calendar to aid scheduling without revealing event details; requires an existing, accessible calendar, noting that data granularity can vary.

Call this read-only action to verify the connection and synchronization status of a user's Google Calendar integration with Cal.

Checks an ICS feed URL (expected as a query parameter) to verify its validity, accessibility, and iCalendar data integrity.

Verifies if Stripe is correctly connected to the Cal scheduling system and functional for processing payments, reporting only on the integration's status.

Retrieves the Stripe integration status and related information for a team, primarily to verify account connection, subscription details, or payment setup; this is a read-only operation that does not modify Stripe settings.

Confirms an existing booking by bookingUid if the booking exists and is in a state allowing confirmation (e.g., not already cancelled or confirmed); this finalizes the booking, does not modify its details, and should typically be performed once.

Initiates or checks the external connection status for a specified calendar, possibly returning a redirect URL for user authorization to complete integration, without altering calendar data.

Creates a new membership for a user within a Cal.com organization. The caller must have admin/owner access to the organization, and the target user must already exist in the system. Use CAL_RETRIEVE_USERS_IN_ORGANIZATION to get valid user IDs.

Creates a new custom attribute for an existing organization, used to enhance data collection for event bookings or user profiles.

Creates a webhook for an organization that sends HTTP POST notifications to a specified URL when triggered by events (e.g., booking created, cancelled, meeting started). Returns the webhook configuration including its unique ID, which can be used to update or delete the webhook later.

Creates a new team profile, or updates one if a 'slug' matches, customizing branding, scheduling, privacy, and operational details.

Schedules a phone call event in Cal.com using existing eventType, organization, and team IDs; this action only registers the event details and does not initiate the actual phone call.

Configures Cal.ai phone call automation for a team event type, enabling AI-powered outbound calls for appointment reminders or custom conversations. Requires team membership - first use CAL_GET_TEAMS_LIST to get a valid teamId, then CAL_GET_EVENT_TYPE_BY_TEAM_ID or CAL_RETRIEVE_TEAM_EVENT_TYPES to get an eventTypeId belonging to that team. Note: This creates the call configuration but does not immediately initiate a call. Cal.ai charges $0.29/minute for AI calls.

Creates a new event type for a specified team in Cal.com; ensure teamId, any provided scheduleId, hosts.userId, and destinationCalendar details are valid and accessible.

Creates a highly customizable Cal.com team event type with extensive scheduling, booking, and host assignment options; schedulingType is required, lengthInMinutes must be included in lengthInMinutesOptions, destination calendar details (from /api/v2/calendars) must be valid if provided, and host User IDs must be valid team members.

Creates a new team with customizable attributes within an existing and accessible Cal.com organization specified by orgId.

Creates a shareable invite link for a Cal.com team that allows new members to join. Returns both the raw token and a complete invitation URL.

Adds a user to a team with a specified role, acceptance status, and impersonation settings; ensure teamId and userId refer to existing, valid entities.

Creates a Cal.com user availability schedule, defining its name, timezone, weekly recurring availability, and specific date overrides; if isDefault is true, this schedule replaces any existing default and applies to event types not linked to a specific schedule.

Creates a new schedule defining a user's availability with weekly slots and date-specific overrides in an organization; setting 'isDefault' to true may replace an existing default schedule for the user.

Creates a webhook for an existing eventTypeId in Cal.com, sending notifications for specified triggers to a subscriberUrl that handles POST requests.

Declines a pending booking using its bookingUid, optionally with a reason; this action is irreversible and applies only to bookings awaiting confirmation.

Permanently deletes all webhooks associated with a specific team event type. Use when you need to remove all webhook configurations for a team's event type.

Disconnects the specified conferencing application (e.g., 'zoom', 'google_meet') for the Cal.com account, immediately terminating any ongoing call or meeting; use with caution.

Tool to remove an existing destination calendar by its unique ID. Use when you need to delete a destination calendar configuration.

Permanently deletes an existing event type by its ID, which invalidates its scheduling links; the operation is irreversible, and while existing bookings are unaffected, no new bookings can be made for this event type.

Permanently removes an event type's configuration from a team's scheduling options (e.g., for cleanup); this action is irreversible and requires the event type to be associated with the team.

Use to permanently remove a user's membership from a specific team within an organization, which revokes their team-associated access but does not remove them from the organization.

Permanently deletes an existing attribute (specified by attributeId) from an existing organization (specified by orgId); this action is irreversible and may affect features dependent on the attribute.

Permanently deletes a specified option from an organization's attribute. Use this action to remove an option value from attributes of type SINGLE_SELECT or MULTI_SELECT. This is useful for cleaning up unused or deprecated configuration choices. Note: This action is destructive and cannot be undone. The option will be permanently removed. Requires organization admin access.

Irreversibly deletes a user's membership from an organization, removing all associated access and permissions; the response confirms deletion without returning details of the deleted membership.

Permanently deletes an organization-level webhook by its ID. This action removes the specified webhook from the organization, stopping all future notifications to its subscriber URL. The deletion is irreversible - the webhook configuration cannot be recovered after deletion. Requirements: - User must be authenticated and have admin permissions in the organization - The webhook must exist within the specified organization - Use 'retrieve_organization_webhooks_by_org_id' to list webhooks before deletion

Permanently deletes a specific schedule using its unique identifier, which must correspond to an existing schedule.

Removes a specified, currently selected calendar from the user's active list within the application, without deleting it from the external provider.

Deletes a previously selected time slot from the Cal schedule using its uid; the slot must exist and this action is irreversible.

Permanently and irreversibly deletes an existing team and all its associated data from the Cal system, using the team's unique teamId.

Permanently and irreversibly deletes a specific team from a Cal.com organization. WARNING: This action cannot be undone and will remove all associated team data including memberships, event types, and bookings. Requires ORG_ADMIN role in the organization.

Irreversibly removes a user's team membership in the Cal application, revoking access to that specific team; the user's overall Cal account remains active.

Unassigns a specific attribute option from a user within an organization. Use this action to remove an attribute option assignment (e.g., skill, role, department) from a specific user. This does NOT delete the attribute option itself from the organization - it only removes the association between the user and that option. The attribute option must currently be assigned to the user. To find assigned attribute options for a user, use the 'Get all attribute options for a user' endpoint first. Requires organization admin access. The operation is reversible by re-assigning the attribute option to the user using the 'Assign attribute option to user' endpoint.

Permanently removes a user from a specific organization (user's system-wide account is unaffected), revoking their access rights therein; this action is irreversible via API and expects the user to be a current member.

Permanently deletes a specific user's schedule, provided the organization, user, and schedule (identified by orgId, userId, and scheduleId) exist.

Permanently deletes an existing webhook by its webhookId, stopping future notifications; this action is irreversible.

Permanently deletes a specific webhook for an event type, halting its real-time notifications; this operation is irreversible and leaves the event type and other webhooks untouched.

Call this to irreversibly delete all webhooks for a specific eventTypeId if the event type exists; details of deleted webhooks are not returned.

Disconnects a calendar integration by its provider name and credential ID, irreversibly revoking Cal's access; external calendar data remains unaffected.

Tool to edit an existing attendee in a Cal.com booking. Use when you need to update attendee details such as name, email, or timezone.

Tool to edit an existing availability by ID on Cal.com. Use when you need to update the days, start time, end time, or schedule association of an existing availability.

Tool to edit an existing booking by its ID. Use when you need to update booking details such as title, description, status, or time.

Tool to edit a selected calendar by its composite ID in Cal.com. Use when you need to update an existing calendar integration.

Fetches a list of bookings, optionally filtered by status, attendee, date range, or by event/team IDs (which must belong to/include the authenticated user respectively), with support for pagination and sorting.

Fetches all configuration settings and characteristics for a single event type (identified by orgId, teamId, and eventTypeId), which must exist and be accessible; this read-only action cannot list, create, or modify event types.

Retrieves a specific attribute of an organization, useful for fetching a single data point instead of the entire organization record.

Fetches an OAuth access token for the specified clientId to authenticate API calls; this action only retrieves the token, not managing scheduling or calendar events.

Fetches comprehensive details for a specific, existing schedule using its scheduleId.

Retrieves a specific user's schedule within an organization, returning availability windows, timezone settings, and date-specific overrides. Requires organization-level access permissions.

Retrieves details for a single, specific webhook using its webhookId and associated eventTypeId.

Retrieves all supported time zone identifiers (e.g., 'America/New_York', 'Europe/London') and their associated metadata, excluding specific DST changes or precise UTC offset details.

Retrieves available time slots for scheduling by considering existing bookings and availability, based on criteria like a specified time range and event type.

Tool to find a specific booking reference by its ID. Use when you need to retrieve details about a single booking reference that links a booking to an external platform or calendar.

Retrieves external references for a specific booking within an organization's team. Use when you need to get calendar or video platform integration details for a booking.

Generates an OAuth 2.0 authorization URL for a supported conferencing app to initiate or refresh its integration with Cal.com.

Retrieves the Cal system's global default schedule configuration, not custom or user-specific ones.

Tool to retrieve all destination calendars configured for the authenticated user. Use when you need to find where new bookings will be created.

Retrieves a specific event type by its ID, requiring that the event type is associated with the given team ID.

Generates the initial Google Calendar OAuth 2.0 authorization URL for user redirection to begin the authentication and authorization process.

Retrieves all managed users associated with a Platform OAuth client. This endpoint is part of Cal.com's Platform API for managing users created through OAuth client credentials. Requires a valid Platform OAuth client ID and secret key, which are obtained when creating an OAuth client at