framecraft is a Claude Code plugin that generates demo videos from a single sentence. The LLM writes HTML scenes with CSS animations, generates voiceover via Edge TTS, captures frames via Playwright, and composites with FFmpeg — all through MCP servers.
The architecture: a SKILL.md file teaches the LLM story structure, pacing, and visual design. The LLM then orchestrates 3 MCP servers directly. No custom video pipeline needed — the skill alone is sufficient, which we verify by running CI with only the external MCPs (no framecraft wrapper).
Some numbers from CI runs: a 15-second teaser costs ~$1 in tokens, takes ~49 LLM turns, ~1.8M input tokens, and ~14 minutes. Token-heavy but it works.
Built this because I kept postponing the demo video for a Chrome extension I maintain. Screen recording was 45 minutes per update. Now it's one prompt.