CLI & MCP
Search the catalog, install components, generate UI and publish your own work — from the terminal or any MCP client.
1. Install & sign in
One global install; login opens the browser and saves a token locally.
2. Use it anywhere
Search, install, publish and manage — no per-editor setup.
3. CI / scripts
Skip login and pass --api-key $API_KEY_21ST (or set the env var) instead.
Search is free. Installing code comes with 2 free runs a day and generation with 30 free monthly credits — Pro removes the limits. Publishing and managing your own work is always included.
Semantic search across components, themes and templates, so your agent finds real references before writing UI.
Search brand and UI logos by name and drop the SVG straight into your project.
Save components, themes and templates into lists, then pull any list back into your agent later.
Browse your team's private component libraries and shared lists from any client.
Pull any component's code straight into the project, npm deps included.
Multiple variants per prompt: compare, pick one, and the code lands back in your agent.
Ship a file to your team library with one command: name, tags and demo are auto-detected.
Publish a CSS theme or a template listing from the same CLI, or sync your project's own design tokens straight into a shareable theme.
Change visibility, rename, retag or take down any component, theme or template you've published. No dashboard needed.
Read and rebuild your public bento profile: swap in components, links and photos, or split it into sections with a divider.
Pro unlocks unlimited installs and more generation credits across the CLI, MCP and the web.
One key works everywhere: the MCP config, --api-key in the CLI, and CI via API_KEY_21ST.