---
title: "Cancel"
method: POST
path: "/v2/rollouts/cancel"
tags: ["rollouts"]
---

# Cancel

`POST /v2/rollouts/cancel`

Cancel a single rollout trace; noop if it already reached a terminal state.

## Request body

- CancelRequest
  - `trace_id` string, uuid, required

## Response `200`

Successful Response

- CancelResponse — One trace's cancel result. Cancellation is two-phase: `accepted` means the trace was marked `cancelling` and finalization enqueued; `noop` means nothing transitioned (already terminal, or not found).
  - `status` 'accepted' | 'noop', required

## Other responses

- `400` — Invalid or malformed request
- `401` — Missing or invalid credentials
- `403` — Caller may not access this resource
- `404` — Referenced entity does not exist
- `409` — Resource already exists
- `422` — Validation Error

---

[API](https://skmtc.dev/hud/apis/hud-platform.md) · [All operations](https://skmtc.dev/hud/apis/hud-platform/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/hud/hud-platform/revisions/58558fc733d9/schema)