Cal.com

Bring the bookings from your Cal.com account into your app, and let your app book meetings.

Connecting

In Cal.com go to Settings, then Developer, then API keys, and create a key. Copy it right away.

Read your bookings

• status: Which bookings to list, like upcoming.
• attendee_email: Only bookings with this attendee email.
• event_type_id: Only bookings of this event type.
• after_start: Only bookings starting after this moment, like 2026-08-15T00:00:00Z.
• before_end: Only bookings ending before this moment.
• limit: How many bookings per read, 1 to 100.

Answers with: uid, title, start, end, booking_status, attendee_name.

Book a meeting

• start: When the meeting starts, in UTC, like 2026-08-20T09:00:00Z. Required.
• event_type_id: Which of your Cal.com event types is being booked. Required.
• attendee_name: Who the meeting is for. Required.
• attendee_email: Where the booking confirmation goes. Required.
• attendee_time_zone: The attendee time zone, like Europe/Istanbul. Required.
• attendee_phone: A phone number for the attendee, with country code.
• length_in_minutes: Meeting length, when the event type allows more than one.

Answers with: uid, title, end, booking_status.

Settings

• Event type: The Cal.com event type your app books when a call does not name one.
• Time zone: The time zone used for attendees when none is given, like Europe/Istanbul.