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

# Generate Presigned Upload Url Endpoint

`POST /s3/presigned-upload-url`

Generate a presigned S3 upload URL for the given bucket and object key.

## Request body

- PresignedUploadUrlRequest
  - `bucket` string, required
  - `object_key` string, required
  - `content_type` string, nullable
  - `expiration` integer, nullable

## Response `200`

Successful Response

- PresignedUploadUrlResponse
  - `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-service-production.skmtc.workers.dev/v1/apis/noso/crucible-backend-api/revisions/2aac272a57fd/schema)