@mcp-ui/server Overview

The @mcp-ui/server package provides server-side utilities to help construct UIResource objects, which can then be sent to a client as part of an MCP response.

Key Exports

• createUIResource(options: CreateUIResourceOptions): UIResource: The primary function for creating UI snippets. It takes an options object to define the URI, content (direct HTML or external URL), and delivery method (text or blob).

Purpose

• Ease of Use: Simplifies the creation of valid UIResource objects.
• Validation: Includes basic validation (e.g., URI prefixes matching content type).
• Encoding: Handles Base64 encoding when delivery: 'blob' is specified.

Building

This package is built using Vite in library mode, targeting Node.js environments. It outputs ESM (.mjs) and CJS (.js) formats, along with TypeScript declaration files (.d.ts).

To build specifically this package from the monorepo root:

pnpm build --filter @mcp-ui/server

See the Server SDK Usage & Examples page for practical examples.