Use this API to generate a pre-signed PUT URL for uploading files larger than 10MB, which exceeds FormX's direct file upload limit.

When to use this API:

Files ≤10MB: Upload directly to extraction endpoints (e.g., /v2/extract)
Files >10MB: Use this API to get a signed URL, then upload your file via PUT request

Upload workflow for large files:

The signed URL is temporary and will expire after a set period. The maximum file size is 524,288,000 bytes (~500MB).

Body Parameters:

size (required): File size in bytes (1 to 524,288,000)
filename (optional): Name of the file to be uploaded
content_type (optional): MIME type of the file (e.g., "application/pdf", "image/jpeg")