---
title: "Cancel one controlled upload through the existing media lifecycle."
method: POST
path: "/v1/cancel_external_media_upload"
tags: ["External Authorization"]
---

# Cancel one controlled upload through the existing media lifecycle.

`POST /v1/cancel_external_media_upload`

## Request

- Base URL: `https://partner.mindupload.app`
- URL: `https://partner.mindupload.app/v1/cancel_external_media_upload`
- Auth: API key in header `X-Partner-Key`

## Request body

- object
  - `preferred_language` string, nullable: BCP-47-ish language code (e.g. 'en', 'zh-cn') for localized messages.
  - `access_token` string, required: Opaque grant token accepted only by grant inspection and external clone invocation; store it as a secret and never expose it to users.
  - `installation_id` string, required: Your stable opaque identifier for this app installation.
  - `external_subject` string, required: Your stable opaque identifier for the person authorizing this installation.
  - `clone_id` string, required: AI consciousness id as returned by clone operations.
  - `upload_id` string, required: Server-issued controlled upload reference returned by request_external_media_upload; never a URL.

## Response `200`

Result envelope — check the success field.

- object
  - `success` boolean: Whether the call succeeded.
  - `error_message` string, nullable: Human-readable reason when success is false.
  - `error_code` string

## Other responses

- `400`: Invalid request payload.
- `401`: Missing or invalid partner key.
- `403`: Partner is not authorized for this operation.
- `429`: Rate limit exceeded — retry later.
- `500`: Internal server error.

---

[API](https://skmtc.dev/mindupload/apis/mind-upload-partner-api.md) · [All operations](https://skmtc.dev/mindupload/apis/mind-upload-partner-api/llms.txt) · [OpenAPI document](https://skmtc.dev/mindupload/apis/mind-upload-partner-api/revisions/0371bdf78533?raw)