---
title: "Join waitlist"
method: POST
path: "/v1/waitlist"
tags: ["Waitlist"]
---

# Join waitlist

`POST /v1/waitlist`

## Request

- Base URL: `https://api.astrocal.dev`
- URL: `https://api.astrocal.dev/v1/waitlist`
- Auth: none required

Creates a waitlist entry for a fully-booked slot. Public endpoint — no authentication required. Returns 400 if the waitlist is not enabled for the event type. Returns 409 if already on waitlist or waitlist is full.

## Request body

- object
  - `event_type_id` string, uuid, required
  - `start_time` string, date-time
  - `duration` integer
  - `invitee_name` string, required
  - `invitee_email` string, email, required
  - `invitee_timezone` string
  - `notes` string
  - `metadata` object

## Response `201`

Waitlist entry created

- object
  - `id` string, required
  - `event_type_id` string, uuid, required
  - `start_time` string, nullable, required
  - `duration_minutes` integer, nullable, required
  - `status` 'waiting' | 'promoted' | 'expired' | 'cancelled', required
  - `position` integer, required
  - `invitee_name` string, required
  - `invitee_email` string, required
  - `invitee_timezone` string, required
  - `notes` string, nullable, required
  - `metadata` object, required
  - `cancel_token` string, required
  - `booking_id` string, uuid, nullable, required
  - `promoted_at` string, nullable, required
  - `expires_at` string, required
  - `is_test` boolean, required
  - `created_at` string, required

## Other responses

- `400`: Waitlist not enabled for this event type
- `409`: Already on waitlist or waitlist full

---

[API](https://skmtc.dev/astrocal/apis/astrocal-api.md) · [All operations](https://skmtc.dev/astrocal/apis/astrocal-api/llms.txt) · [OpenAPI document](https://skmtc.dev/astrocal/apis/astrocal-api/revisions/3b953e19a348?raw)