---
title: "Ask-before-upload for the assignment's canonical WAV chunk (coords derived server-side)"
method: POST
path: "/v1/pre-render/assignments/{assignmentId}/chunk-upload-url"
tags: ["pre-render"]
---

# Ask-before-upload for the assignment's canonical WAV chunk (coords derived server-side)

`POST /v1/pre-render/assignments/{assignmentId}/chunk-upload-url`

## Request

- Base URL: `https://api.ditto.audio` (the document declares no server; this is the origin it was published from)
- URL: `https://api.ditto.audio/v1/pre-render/assignments/{assignmentId}/chunk-upload-url`
- Auth: HTTP bearer

## Path parameters

- `assignmentId` string, required

## Request body

- CloudChunkUploadUrlDto

## Response `201`

---

[API](https://skmtc.dev/ditto/apis/ditto-audio-api.md) · [All operations](https://skmtc.dev/ditto/apis/ditto-audio-api/llms.txt) · [OpenAPI document](https://skmtc.dev/ditto/apis/ditto-audio-api/revisions/30c8d7c218da?raw)