Features
Spec-driven workflow with files in repo
One requirement per change cycle
Proposal, tasks, state, verification, review artifacts
Works with Claude Code, Codex, Gemini, OpenCode
Plain CLI workflow support
Project initialization to change-ready state
Archive accepted changes after deploy
Stitch plugin for page design preview & code gen
Checkpoint plugin for Playwright UI verification
Playwright-based flow testing integration
Natural language prompt to start work
Built-in recommended prompts (init, change, archive)
Open source CLI tool via npm
Cross-platform (Node.js based)
Plugin architecture for extending workflow
Drag-and-drop visual canvas with code layer mapping
AI page, theme, and component generation from prompts
Responsive auto-layout with mobile support
Multiplayer real-time collaboration with layer comments
Design system with props, slots, and variants
Export clean front-end code without AI use
CLI sync via `npx @subframe/cli sync`
AI remix variations and @mention context
Integration with Cursor and Claude Code via MCP + Skills
24-hour version history (Free), 7-day (Pro)
Personalized AI that learns your components and style
Prototype with code and annotated designs
Unlimited team members on all plans
Free viewer seats included
