---
title: "Changes to Cancel workflow"
method: POST
path: "/v1/workflows/{key}/cancel"
---

# Changes to Cancel workflow

`POST /v1/workflows/{key}/cancel`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 2 of 64 revisions.

- **2026-07-14** `de4604427056`: 1 info
- **2025-09-23** `9971ba6348f3`: 1 breaking

## Changes

- **2026-07-14** `de4604427056`: 1 info
  - api operation id `cancelWorkflow` removed and replaced with `cancelWorkflow (2)`
- **2025-09-23** `9971ba6348f3`: 1 breaking
  - removed the media type `application/json` for the response with the status `204`

---

[Operation](https://skmtc.dev/knocklabs/apis/knock-api/docs/v1/workflows/:key/cancel/post.md) · [API](https://skmtc.dev/knocklabs/apis/knock-api.md) · [Page](https://skmtc.dev/knocklabs/apis/knock-api/changes/v1/workflows/:key/cancel/post)