Step 1 Get closest AmazonS3 upload endpoint1

get/api/upload/endpointGet closest Amazon S3 upload endpoint

Step 2 Initialise upload1

post/api/upload/initInitialise upload

Step 3A Upload file in chunks1

post/Upload file in chunks

Step 3B Register uploaded chunk1

post/api/v4/upload/{uploadId}Register uploaded chunk

Step 4 EITHER Finalise uploaded file1

post/api/v4/upload/{uploadId}/Finalise an uploaded file

Step 4 OR Finalize and save an additional uploaded file as a new asset.1

post/api/v4/media/{id}/save/additional/{uploadId}/Finalize additional file

Step 5 Poll for processing status1

get/api/v4/upload/pollRetrieve poll state

Step 6 EITHER Save as a new asset1

post/api/v4/media/save/{importId}Save as a new asset

Step 6 OR Save uploaded file to existing asset1

post/api/v4/media/{id}/save/{importId}Save uploaded file to existing asset

UP

Upload Assets

Digital asset uploads: chunked file transfer, processing status, and saving as new or existing assets

9 operations9 models1 revision

Changes

Updated 3 Nov 2026

Source

Spec: OpenAPI 3.1.0
Retrieved: Nov 3, 2026, 09:26 UTC
Digest: 05062b65fc98

For agents

Every page here has a markdown twin. The overview is one fetch; the llms.txt lists every operation with a link to its own markdown.

curl https://skmtc.dev/bynder/apis/upload-assets.md

curl https://skmtc.dev/bynder/apis/upload-assets/llms.txt