Cal.com Automation via Rube MCP

Automate Cal.com scheduling operations through Composio's Cal toolkit via Rube MCP.

Toolkit docs: composio.dev/toolkits/cal

Prerequisites

• Rube MCP must be connected (RUBE_SEARCH_TOOLS available)
• Active Cal.com connection via RUBE_MANAGE_CONNECTIONS with toolkit cal
• Always call RUBE_SEARCH_TOOLS first to get current tool schemas

Setup

Get 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.

1. Verify Rube MCP is available by confirming RUBE_SEARCH_TOOLS responds
2. Call RUBE_MANAGE_CONNECTIONS with toolkit cal
3. If connection is not ACTIVE, follow the returned auth link to complete Cal.com authentication
4. Confirm connection status shows ACTIVE before running any workflows

Core Workflows

1. Manage Bookings

When to use: User wants to list, create, or review bookings

Tool sequence:

1. CAL_FETCH_ALL_BOOKINGS - List all bookings with filters [Required]
2. CAL_POST_NEW_BOOKING_REQUEST - Create a new booking [Optional]

Key parameters for listing:

• status: Filter by booking status ('upcoming', 'recurring', 'past', 'cancelled', 'unconfirmed')
• afterStart: Filter bookings after this date (ISO 8601)
• beforeEnd: Filter bookings before this date (ISO 8601)

Key parameters for creation:

• eventTypeId: Event type ID for the booking
• start: Booking start time (ISO 8601)
• end: Booking end time (ISO 8601)
• name: Attendee name
• email: Attendee email
• timeZone: Attendee timezone (IANA format)
• language: Attendee language code
• metadata: Additional metadata object