---
title: "Cancel Pipeline"
method: POST
path: "/pipeline/{session_id}/cancel"
tags: ["pipeline"]
---

# Cancel Pipeline

`POST /pipeline/{session_id}/cancel`

Cancel a running pipeline.

Works cross-instance: writes a cancel signal to the store (S3)
so the executing instance can detect it. Also tries local cancellation.

## Path parameters

- `session_id` string, required

## Response `200`

Successful Response

- unknown

## Other responses

- `422` — Validation Error

---

[API](https://skmtc.dev/nvidia/apis/physics-agent-service.md) · [All operations](https://skmtc.dev/nvidia/apis/physics-agent-service/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/nvidia/physics-agent-service/revisions/47f3bc191c91/schema)