---
title: "Cancel a job."
method: POST
path: "/v1/machines/{id}/jobs/{job_id}/cancel"
tags: ["machines"]
---

# Cancel a job.

`POST /v1/machines/{id}/jobs/{job_id}/cancel`

## Request

- Base URL: `https://api.smolmachines.com`
- URL: `https://api.smolmachines.com/v1/machines/{id}/jobs/{job_id}/cancel`
- Auth: HTTP bearer
- TypeScript: <https://skmtc.dev/smolmachines/apis/smolfleet-api/docs/v1/machines/:id/jobs/:job_id/cancel/post.ts> (a function with typed inputs; its response is checked against the schema)

Sends SIGTERM to a running job. Its exit code, 143, is recorded once it has stopped. Requires the `machine:exec` scope.

## Path parameters

- `id` string, required
- `job_id` string, required

## Response `202`

The job, as it stands after the signal

- MachineJob: A job and what is known about it.
  - `command` string[], required: The command as it was run (argv).
  - `createdAt` string, required
  - `exitCode` integer, nullable: The command's exit code once `exited`; 143 when it was cancelled or hit its timeout.
  - `finishedAt` string, nullable
  - `id` string, required
  - `machineId` string, required
  - `state` string, required: `running`, `exited` (see `exitCode`), or `lost`: the machine stopped or restarted while the job ran, so it never finished.
  - `stderrBytes` integer, nullable: Bytes of stderr written so far, when the machine was asked.
  - `stdoutBytes` integer, nullable: Bytes of stdout written so far, when the machine was asked.

## Other responses

- `401`: Missing or invalid API key
- `403`: Key lacks the required scope
- `404`: Not found
- `429`: Rate limited; retry after the Retry-After header
- `500`: Internal error
- `503`: Retryable: the machine was unavailable

## Changes

- **2026-10-16** `bc31fc04a568`: 1 info
  - endpoint added

[Operation history](https://skmtc.dev/smolmachines/apis/smolfleet-api/changes/v1/machines/:id/jobs/:job_id/cancel/post.md)

---

[API](https://skmtc.dev/smolmachines/apis/smolfleet-api.md) - [All operations](https://skmtc.dev/smolmachines/apis/smolfleet-api/llms.txt) - [OpenAPI document](https://skmtc.dev/smolmachines/apis/smolfleet-api/revisions/bc31fc04a568?raw)