Short answer: You can list heygen voices in HeyGen by hand from its own interface, but it won’t repeat itself. On TinyCommand, add the HeyGen List HeyGen Voices action to a workflow, map its 0 inputs from any upstream app, and it runs automatically every time the trigger fires. No code, and a free tier to start.
{}
{"data": {"voices": [{"gender": "Female","language": "English","voice_id": "v_abc"}]},"error": null}
Use these fields in downstream nodes for routing, logging, or error handling.
Any of these apps can fire this action as part of a workflow.