---
title: "Generate Presigned Part Url Endpoint"
method: POST
path: "/s3/multipart/presigned-url"
tags: ["s3"]
---

# Generate Presigned Part Url Endpoint

`POST /s3/multipart/presigned-url`

Generate a presigned URL for uploading a specific part of a multipart upload.

## Request body

- PresignedPartUrlRequest
  - `bucket` string, required
  - `object_key` string, required
  - `upload_id` string, required
  - `part_number` integer, required
  - `expiration` integer, nullable

## Response `200`

Successful Response

- PresignedPartUrlResponse
  - `url` string, required

## Other responses

- `422` — Validation Error

---

[API](https://skmtc.dev/noso/apis/crucible-backend-api.md) · [All operations](https://skmtc.dev/noso/apis/crucible-backend-api/llms.txt) · [OpenAPI document](https://skmtc.dev/noso/apis/crucible-backend-api/revisions/94953390bbd8?raw)