Reserve slot - Automate.ax

calcom.reserveSlot reserves an available Cal.com slot.

automations/reserve-slot.automation.ts

import { automation, markSignificant } from "automate.ax"
import { calcom } from "automate.ax/calcom"

export default automation("Reserve slot", () => {
  markSignificant(
    calcom.reserveSlot({
      eventTypeId: 23,
      slotStart: "2026-09-10T17:00:00.000Z",
    }),
  )
})

Input

Field	Type	Required	Description
`eventTypeId`	`number`	Yes	Event type whose slot to reserve.
`slotStart`	`string (date-time)`	Yes	Slot start in UTC.
`slotDuration`	`number`	No	Slot length in minutes.
`reservationDuration`	`number`	No	Hold duration in minutes; defaults to `5`.

Output

Field	Type	Required	Description
`eventTypeId`	`number`	Yes	Event type that owns the slot.
`slotStart`	`string (date-time)`	Yes	Reserved slot start.
`slotEnd`	`string (date-time)`	Yes	Reserved slot end.
`slotDuration`	`number`	Yes	Slot length in minutes.
`reservationUid`	`string`	Yes	Reservation identifier.
`reservationDuration`	`number`	Yes	Hold duration in minutes.
`reservationUntil`	`string (date-time)`	Yes	Time when Cal.com releases the hold.

Cal.com enforces account role, plan, and availability requirements. Provider rejections surface as structured action failures with the HTTP status and any Retry-After delay.