MCP

The onchain-ui registry is MCP-compatible: it serves an index at /r/registry.json, so AI assistants like Claude Code, Cursor, and Codex can browse, search, and install onchain-ui components through the shadcn MCP server — no manual copy-paste.

Setup

Add the @onchain-ui namespace to your project's components.json:

{
  "registries": {
    "@onchain-ui": "https://onchain-ui.dev/r/{name}.json"
  }
}

Then initialize the MCP server for your client:

npx shadcn mcp init --client claude

Use --client cursor, --client vscode, or --client codex for other assistants. The MCP server reads your components.json, so every registry configured there — including @onchain-ui — becomes available to the assistant.

Usage

With the MCP server connected, prompts like these work directly in your assistant:

• "Show me the components available in the onchain-ui registry"
• "Install the asset-row component from @onchain-ui"
• "Build a portfolio card using @onchain-ui/asset-row and @onchain-ui/token-price"

The namespace also works with the CLI directly:

npx shadcn add @onchain-ui/asset-row