List Voices: Synthesia action

Sample request

{}

Returns

{
  "voices": [
    {
      "id": "v_abc",
      "gender": "female",
      "locale": "en-US",
      "displayName": "Anna (US)"
    }
  ]
}

Use these fields in downstream nodes for routing, logging, or error handling.

FAQ

Questions about List Voices.

What does the List Voices action do in Synthesia?

Returns the voices available for Synthesia avatars, grouped by locale and gender. Useful for letting end users pick the language and tone of the generated video.

What inputs does List Voices require?

List Voices has no required inputs. Sensible defaults are applied if you leave fields blank.

Can I use dynamic inputs from earlier workflow nodes?

Yes. Any field on this action can pull values from upstream nodes, whether that's a form response, a trigger payload, an AI output, or a lookup result.

What happens if Synthesia returns an error?

The workflow pauses on the failed node, the error message is captured in the run log, and you can retry the run with one click. Auto-retry policies are configurable per workflow with exponential backoff up to 5 attempts.

Does List Voices support batch operations?

Yes. Run List Voices inside a Loop node to process arrays. Tiny Command handles Synthesia's rate limits automatically so you don't have to throttle manually.

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