GET

/v1/schemas/fal/audio/heygen/heygen-voice?kind=output

Accept:

kind outputactivity audiohash e3186658…extracted Oct 22, 2026version currentsource upstream spec ↗

field	recorded source
schema	Source linked above. upstream-spec Source trace `98758ac32c37e13abe1bfdee0ed6779736c26590b030edcf1f8b17a159000326` { "fetchedAt": 1792645225, "extractorVersion": "1", "verifiedAt": null }

Response body

2 properties · 2 required · 1 $defs

property	type	description	constraints
duration*	number	Duration of the audio in seconds.
audio*	File	Generated speech as a 44.1 kHz WAV file.

Types

1 $defs

Fileobject

file_size	integer	The size of the file in bytes.	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
content_type	string	The mime type of the file.	nullable

Validate a payload

before you spend tokens

shell

$ curl -X POST https://modelschemas.com/v1/validate \
    -d '{"provider":"fal","endpointId":"heygen/heygen-voice","payload":{…}}'
→ {"valid": false, "errors": [{"path": "#", "keyword": "required", …}]}