Create Video

Generate complete videos from a text prompt. Describe what you want and the AI handles script writing, avatar selection, visuals, voiceover, pacing, and captions automatically.

Authentication

All requests require the X-Api-Key header. Set the HEYGEN_API_KEY environment variable.

curl -X POST "https://api.heygen.com/v1/video_agent/generate" \
  -H "X-Api-Key: $HEYGEN_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"prompt": "Create a 60-second product demo video."}'

Tool Selection

If HeyGen MCP tools are available (mcp__heygen__*), prefer them over direct HTTP API calls, they handle authentication and request formatting automatically.

Task	MCP Tool	Fallback (Direct API)
Generate video from prompt	mcp__heygen__generate_video_agent	POST /v1/video_agent/generate
Check video status / get URL	mcp__heygen__get_video	GET /v2/videos/{video_id}
List account videos	mcp__heygen__list_videos	GET /v2/videos
Delete a video	mcp__heygen__delete_video	DELETE /v2/videos/{video_id}

If no HeyGen MCP tools are available, use direct HTTP API calls as documented in the reference files.

Default Workflow

Always use prompt-optimizer.md guidelines to structure prompts with scenes, timing, and visual styles.

With MCP tools:

1. Write an optimized prompt using prompt-optimizer.md → visual-styles.md
2. Call mcp__heygen__generate_video_agent with prompt and config (duration_sec, orientation, avatar_id)
3. Call mcp__heygen__get_video with the returned video_id to poll status and get the download URL