---
search:
  tags:
    - Runs
    - POST
seo:
  description: >-
    Cancels a queued or running run. A run that has already settled comes back…
    Reference for the POST /v1/runs/{runId}/cancel endpoint in the looot API.
sidebar:
  label: Cancel a run
  badge: POST
title: Cancel a run
type: openapi-operation
---
Cancels a queued or running run. A run that has already settled comes back unchanged. The MCP `runs_cancel` tool does the same.

`POST /v1/runs/{runId}/cancel`