> ## Documentation Index
> Fetch the complete documentation index at: https://dripart-dev-api-v1.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Get presigned upload URL

> Returns a presigned URL for direct upload to cloud storage.

Flow:
1. Call this endpoint to get `upload_url`
2. PUT file directly to `upload_url`
3. Call `POST /v1/inputs/{id}/complete` to finalize

Notes:
- `size` is required to generate the presigned URL with correct content-length restriction
- Upload URL expires in 1 hour
- If upload not completed within expiry, resource transitions to `failed` status