# Multipart Upload Complete

**POST** `/v1/utils/S3multipart/complete`

Completes an S3 multipart upload session after all parts have been uploaded.

Combines the uploaded parts in S3 into the final asset file.

### Response fields

**result.fileUri** Permanent accessible URI of the assembled file in storage.  
**result.s3** S3 service response metadata including `Location`, `Bucket`, `Key`, and `ETag`.