---
title: "Cancel Response"
method: POST
path: "/v1/responses/{response_id}/cancel"
tags: ["responses"]
---

# Cancel Response

`POST /v1/responses/{response_id}/cancel`

Cancel a response by ID.

Supports both:
- Polling IDs (litellm_poll_*): Cancels background response and updates status in Redis
- Provider response IDs: Passes through to provider API

Follows the OpenAI Responses API spec: https://platform.openai.com/docs/api-reference/responses/cancel

```bash
# Cancel polling response
curl -X POST http://localhost:4000/v1/responses/litellm_poll_abc123/cancel     -H "Authorization: Bearer sk-1234"

# Cancel provider response
curl -X POST http://localhost:4000/v1/responses/resp_abc123/cancel     -H "Authorization: Bearer sk-1234"
```

## Path parameters

- `response_id` string, required

## Response `200`

Successful Response

- unknown

## Other responses

- `422` — Validation Error

## Changes

- **2026-09-18** `082b5fabd909` — 2 info
  - added the optional property `detail/items/ctx` to the response with the `422` status
  - added the optional property `detail/items/input` to the response with the `422` status

[Change history](https://skmtc.dev/flock/apis/litellm-api/changes/v1/responses/:response_id/cancel/post.md)

---

[API](https://skmtc.dev/flock/apis/litellm-api.md) · [All operations](https://skmtc.dev/flock/apis/litellm-api/llms.txt) · [OpenAPI document](https://skmtc.dev/flock/apis/litellm-api/revisions/731afbea6a1b?raw)