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POST
Run a video helper
Some generators take an input you cannot guess. image-text-slides needs a voice, and its loadVoices helper lists the voices it can use. It is the only helper today. seedance has none.
The answer lists the voices:
Send the id you picked as customParams.voice to Generate a video. preview_url plays a sample of the voice. Running a helper uses no credit.

If it fails

The 404 body names the identifier you sent:

Authorizations

Authorization
string
header
required

Your API key from Connections > API Keys, or an OAuth access token (pos_...). Send it as it is, with no Bearer prefix.

Body

application/json
identifier
string
required

The generator, such as image-text-slides

functionName
string
required

The helper, such as loadVoices

params
object

The helper's inputs. loadVoices takes none

Response

The helper's answer. For loadVoices, the voices

voices
object[]
Last modified on September 23, 2026