Results
Job status never includes masks. After success, either fetch signed result URLs or build a zip archive. Operations: retrieveJobResult, createJobDownload, retrieveJobDownload in the API reference.
Signed result
URLs expire after expiresIn seconds. A job that has not succeeded yet returns 409 result_not_ready.
Archive
The zip contains output_manifest.json plus artifacts. Image items list per-instance PNG masks. Video items point masks at a per-frame COCO-RLE file. A preview PNG or MP4 appears when generatePreview was true.
Calling GET before POST returns 404 download_not_requested. Requesting a download before the job is success returns 409 job_not_downloadable.