Avatar Video Create AI avatar videos with full control over avatars, voices, scripts, scenes, and backgrounds. Build single or multi-scene videos with exact configuration using HeyGen's API. Authentication All requests require the header. Set the environment variable. Tool Selection If HeyGen MCP tools are available ( ), prefer them over direct HTTP API calls — they handle authentication and request formatting automatically. | Task | MCP Tool | Fallback (Direct API) | |------|----------|----------------------| | Check video status / get URL | | | | List account videos | | | | Delete a video |…