Indexbrain + Cal.com

SchedulingAPI key8 read, 6 writePro and Team

Cal.com syncs bookings (title, attendees, time, status) using an API key. Get it from Cal.com Settings → Developer → API Keys. Skills can also create/reschedule/cancel bookings and manage event types.

Connect Cal.com Cal.com website

Every Cal.com action

Each action is set independently to always allow, ask every time, or disabled. The mode below is the default before anyone changes anything.

Action	What it does	Type	Default
Get availabilitycalcom.get_availability	Get available Cal.com booking slots for an event type within a time window.	read	Always allow
Get bookingcalcom.get_booking	Get details of a Cal.com booking.	read	Always allow
Get mecalcom.get_me	Get details of the authenticated Cal.com user.	read	Always allow
Get schedulecalcom.get_schedule	Get details of a specific Cal.com availability schedule, including time slots and timezone.	read	Always allow
List bookingscalcom.list_bookings	List Cal.com bookings.	read	Always allow
List event typescalcom.list_event_types	List all Cal.com event types.	read	Always allow
List schedulescalcom.list_schedules	List all availability schedules for the authenticated Cal.com user.	read	Always allow
Query booking volumecalcom.query_booking_volume	Count Cal.com bookings in a date range, optionally filtered by status.	read	Always allow
Cancel bookingcalcom.cancel_booking	Cancel a Cal.com booking by uid. Optionally provide a cancellation reason.	write	Ask every time
Create bookingcalcom.create_booking	Create a new Cal.com booking.	write	Ask every time
Create event typecalcom.create_event_type	Create a new Cal.com event type (meeting type) with title, slug, duration, and optional locations.	write	Ask every time
Delete event typecalcom.delete_event_type	Permanently delete a Cal.com event type. This cannot be undone. Requires confirm=true.	write	Ask every time
Reschedule bookingcalcom.reschedule_booking	Reschedule a Cal.com booking to a new start time.	write	Ask every time
Update event typecalcom.update_event_type	Update an existing Cal.com event type. Only provided fields are changed.	write	Ask every time

Every write stops for a human

Write actions are off entirely until an admin turns them on, and even then each one halts the run and asks before it happens. There is no auto-approve mode anywhere in the product, on any plan. Disabling an action goes further: it is never offered to the model, so it cannot be asked for.

Connecting it

Connect Cal.com

Paste an API key. It is encrypted at rest and never shown again.

Choose what it may do

Set each action to always allow, ask, or disabled. Reads are allowed by default; writes ask.

Ask

From the Indexbrain dashboard, or from Claude, Cursor, ChatGPT, Codex, or Slack over MCP and REST.

Connect Cal.com and ask it something

The free tier includes three integrations, needs no card, and does not expire.