---
title: "Check a client in (attended), mark a no-show, or set back to expected"
method: POST
path: "/api/v1/class-seats/{reference}/attendance"
---

# Check a client in (attended), mark a no-show, or set back to expected

`POST /api/v1/class-seats/{reference}/attendance`

## Request

- Base URL: `http://127.0.0.1:4310`
- URL: `http://127.0.0.1:4310/api/v1/class-seats/{reference}/attendance`
- Auth: one of:
  - HTTP bearer
  - API key in cookie `sfb_session`

## Path parameters

- `reference` string, required

## Request body

- object
  - `attendance` 'attended' | 'no_show' | 'expected', required

## Response `200`

OK

- object

## Other responses

- `400`: Validation error
- `401`: Unauthenticated
- `403`: Forbidden
- `404`: Not found
- `409`: Conflict or invalid state

---

[API](https://skmtc.dev/scalingfirm/apis/tsf-booking-api.md) · [All operations](https://skmtc.dev/scalingfirm/apis/tsf-booking-api/llms.txt) · [OpenAPI document](https://skmtc.dev/scalingfirm/apis/tsf-booking-api/revisions/81704199cd37?raw)