---
title: "Init Multipart Upload"
method: POST
path: "/ai/reel/upload/init"
tags: ["ai"]
---

# Init Multipart Upload

`POST /ai/reel/upload/init`

## Request

- Base URL: `https://api.reeldrop.io` (the document declares no server; this is the origin it was published from)
- URL: `https://api.reeldrop.io/ai/reel/upload/init`
- Auth: HTTP bearer

Initiate an S3 multipart upload. Returns upload_id + s3_key.

## Response `200`

Successful Response

- MultipartInitResponse
  - `upload_id` string, required
  - `s3_key` string, required

## Other responses

- `422`: Validation Error

---

[API](https://skmtc.dev/reeldrop/apis/reeldrop-api.md) · [All operations](https://skmtc.dev/reeldrop/apis/reeldrop-api/llms.txt) · [OpenAPI document](https://skmtc.dev/reeldrop/apis/reeldrop-api/revisions/d3b2a338556c?raw)