---
title: "Fallback"
method: POST
path: "/v1/advertising/decisions/{attempt_id}/fallback"
tags: ["advertising-delivery"]
---

# Fallback

`POST /v1/advertising/decisions/{attempt_id}/fallback`

## Request

- Base URL: `https://api.shortkit.dev` (the document declares no server; this is the origin it was published from)
- URL: `https://api.shortkit.dev/v1/advertising/decisions/{attempt_id}/fallback`
- Auth: none declared

## Path parameters

- `attempt_id` string, uuid, required

## Response `200`

Successful Response

- unknown

## Other responses

- `422`: Validation Error

## Changes

- **2026-10-28** `bb31f5e3e709`: 1 breaking
  - removed the request body
- **2026-10-26** `e111d7a18286`: 1 info
  - endpoint added

[Operation history](https://skmtc.dev/shortkit/apis/shortkit-api/changes/v1/advertising/decisions/:attempt_id/fallback/post.md)

---

[API](https://skmtc.dev/shortkit/apis/shortkit-api.md) - [All operations](https://skmtc.dev/shortkit/apis/shortkit-api/llms.txt) - [OpenAPI document](https://skmtc.dev/shortkit/apis/shortkit-api/revisions/82ba66751b25?raw)