GET

/v1/schemas/fal/video/blackforestlabs/flux-3/text-to-video/draft?kind=output

Accept:

kind outputactivity videohash ad130b47…extracted Aug 27, 2026version currentsource upstream spec ↗

field	recorded source
schema	Source linked above. upstream-spec Source trace `3d2d3050fe7428ef7b5752a8d97a4cef5f21c982e69a7f5d6a484a3a64459764` { "fetchedAt": 1787806850, "extractorVersion": "1", "verifiedAt": null }

Response body

2 properties · 1 required · 1 $defs

property	type	description	constraints
video*	File	The draft video.
draft_cache	File	Durable encrypted cache bundle; pass it to `draft-enhance` for a full-quality render. Absent when the partner did not return a cache bundle for this draft.	nullable

Types

1 $defs

Fileobject

content_type	string	The mime type of the file.	nullable
url*	string	The URL where the file can be downloaded from.
file_name	string	The name of the file. It will be auto-generated if not provided.	nullable
file_size	integer	The size of the file in bytes.	nullable

Validate a payload

before you spend tokens

shell

$ curl -X POST https://modelschemas.com/v1/validate \
    -d '{"provider":"fal","endpointId":"blackforestlabs/flux-3/text-to-video/draft","payload":{…}}'
→ {"valid": false, "errors": [{"path": "#", "keyword": "required", …}]}