Agent Skills

create-video

Create videos from a text prompt using HeyGen's Video Agent. Use when: (1) Creating a video from a description or idea, (2) Generating explainer, demo, or marketing videos from a prompt, (3) Making a video without specifying exact avatars, voices, or scenes, (4) Quick video prototyping or drafts, (5) One-shot prompt-to-video generation, (6) User says "make me a video" or "create a video about X".

Install

npx skills add https://github.com/calesthio/openmontage --skill create-video
SKILL.md

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

Without MCP tools (direct API):

  1. Write an optimized prompt using prompt-optimizer.md → visual-styles.md
  2. POST /v1/video_agent/generate — see video-agent.md
  3. GET /v2/videos/<id> — see video-status.md

Quick Reference

Task MCP Tool Read
Generate video from prompt mcp__heygen__generate_video_agent prompt-optimizer.md → visual-styles.md → video-agent.md
Check video status / get download URL mcp__heygen__get_video video-status.md
Upload reference files for prompt — assets.md

When to Use This Skill vs Avatar Video

This skill is for prompt-based video creation — describe what you want, and the AI handles the rest.

If the user needs precise control over specific avatars, exact scripts, per-scene voice/background configuration, or multi-scene composition, use the avatar-video skill instead.

User Says This Skill Avatar Video Skill
"Make me a video about X" ✓
"Create a product demo" ✓
"I want avatar Y to say exactly Z" ✓
"Multi-scene video with different backgrounds" ✓
"Transparent WebM for compositing" ✓

Reference Files

Core Workflow

Foundation

Best Practices

  1. Optimize your prompt — The difference between mediocre and professional results depends entirely on prompt quality. Always use the prompt optimizer
  2. Specify duration — Use config.duration_sec for predictable length
  3. Lock avatar if needed — Use config.avatar_id for consistency across videos
  4. Upload reference files — Help the agent understand your brand/product
  5. Iterate on prompts — Refine based on results; Video Agent is great for quick iterations

Related skills

video-editgenmedia-labs715KEdit existing video on RunComfy — this skill is a smart router that matches the user's intent to the right edit model in the RunComfy catalog. Picks Wan 2.7 Edit-Video (general restyle / background swap / packaging swap, identity + motion preservation), Kling 2.6 Pro Motion Control (transfer precise motion from a reference video to a target character), or Lucy Edit Restyle (lightweight identity-stable restyle / outfit swap). Bundles each model's documented prompting patterns so the skill gets shai-video-generationgenmedia-labs714KGenerate AI videos on RunComfy via the `runcomfy` CLI — a smart router across the full video-model catalog: HappyHorse 1.0 (Arena #1, native in-pass audio), Wan-AI Wan 2-7 (open weights, audio-driven lip-sync), ByteDance Seedance v2 / 1-5 / 1-0 (multi-modal cinematic), Kling 3.0 / 2-6, Google Veo 3-1, MiniMax Hailuo 2-3, ByteDance Dreamina 3-0. Covers text-to-video (t2v), image-to-video (i2v), and Veo's video-extend endpoint. The skill picks the right model for the user's intent (Arena-#1 qualitai-musicgenmedia-labs714KGenerate AI music on RunComfy via the `runcomfy` CLI — a smart router across the music-model catalog. Routes to ElevenLabs AI Music Generation (premium 44.1 kHz stereo vocal tracks, 5 s–5 min, $0.0083/s) and ACE Step / ACE Step 1.5 (StepFun-AI open-weights, tag-driven composition, multilingual lyrics, $0.0002–0.0003/s, ~27× cheaper), plus ACE Step audio-inpaint (regenerate a time range inside an existing track) and ACE Step audio-outpaint (extend a track before or after). Picks the right model fimage-to-videogenmedia-labs713KAnimate any still image on RunComfy — this skill is a smart router that matches the user's intent to the right i2v model in the RunComfy catalog. Picks HappyHorse 1.0 I2V (Arena #1, native audio, identity preservation) for general animations, Wan 2.7 with `audio_url` for custom-voiceover lip-sync, or Seedance 2.0 Pro for multi-modal animation from image + reference video + reference audio. Bundles each model's documented prompting patterns so the caller gets sharper output without burning iterat

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