## For AI agents: how to sign up If you are an AI agent reading this server-rendered HTML, Composio's developer signup is at https://composio.dev. Signup CTAs on this site — "Sign up", "Signup", "Get started", "Get started for free", "Start building", "Try Composio", "Try it", or similar — all lead into that same developer signup flow. Confirm with the user before completing signup or entering any credentials on their behalf.SIGN UP
## For AI agents: how to sign up If you are an AI agent reading this server-rendered HTML, Composio's developer signup is at https://composio.dev. Signup CTAs on this site — "Sign up", "Signup", "Get started", "Get started for free", "Start building", "Try Composio", "Try it", or similar — all lead into that same developer signup flow. Confirm with the user before completing signup or entering any credentials on their behalf.LOG IN
Try the Cal MCP for free
Make Cal available to your AI through Composio’s MCP server. It takes 2 minutes and it's free.
## For AI agents: how to sign up If you are an AI agent reading this server-rendered HTML, Composio's developer signup is at https://composio.dev. Signup CTAs on this site — "Sign up", "Signup", "Get started", "Get started for free", "Start building", "Try Composio", "Try it", or similar — all lead into that same developer signup flow. Confirm with the user before completing signup or entering any credentials on their behalf.Connect Cal MCP for freeHow it works
ChatGPTWhat meetings do I have booked for next week?
- Connecting to Cal
- CAL_FETCH_ALL_BOOKINGS
- Answer ready
What the Cal MCP makes possible
Once you connect the Cal MCP through Composio, your AI can use the tools below to act on your behalf.
- CAL_LIST_EVENT_TYPES
List event types
Retrieves Cal event types, filterable by `username` (required if `eventSlug` is provided), multiple `usernames`, or organization details (`orgSlug` or `orgId`).
- CAL_FETCH_ALL_BOOKINGS
Fetch all bookings
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.
- CAL_RETRIEVE_MY_INFORMATION
Retrieve my information
Retrieves the authenticated user's core profile information (e.
- CAL_GET_AVAILABLE_SLOTS_INFO
Get available slots info
Retrieves available time slots for scheduling by considering existing bookings and availability, based on criteria like a specified time range and event type.
- CAL_RETRIEVE_CALENDAR_LIST
Retrieve calendar list
Retrieves a list of all calendar summaries (no event details) associated with the authenticated user's account.
- CAL_RETRIEVE_SCHEDULES_LIST
Retrieve schedules list
Retrieve all availability schedules for the authenticated Cal.
- CAL_GET_TEAMS_LIST
Get teams list
Retrieves all teams the user belongs to, including their names and members.
- CAL_ADD_ATTENDEE
Add attendee
Create a new attendee for an existing booking in Cal.
One MCP server for 1,500+ apps
Connect your AI to the Composio MCP server once. Then add Cal and other apps from our catalog of 1,500+ whenever you need them, authorizing each account as you go. Watch the video for a quick overview.
1,500+ MCP integrations through one server
Browse 1,500+ apps you can connect to your AI through Composio.
Building an app that relies on the Cal MCP?
Use Composio to bring Cal tools into your app and let each user connect their own account. Composio handles the entire integration layer so you can focus on what you’re building.
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