MCP Server Builder

Quick Reference

import {
  MCPServer,
  text,
  object,
  markdown,
  html,
  image,
  widget,
  error,
} from "mcp-use/server";
import { z } from "zod";

const server = new MCPServer({ name: "my-server", version: "1.0.0" });

// Tool
server.tool(
  {
    name: "my-tool",
    description: "...",
    schema: z.object({ param: z.string().describe("...") }),
  },
  async ({ param }) => text("result"),
);

// Resource
server.resource(
  { uri: "config://settings", name: "Settings", mimeType: "application/json" },
  async () => object({ key: "value" }),
);

// Prompt
server.prompt(
  {
    name: "my-prompt",
    description: "...",
    schema: z.object({ topic: z.string() }),
  },
  async ({ topic }) => text(`Write about ${topic}`),
);

server.listen();

Response helpers: text(), object(), markdown(), html(), image(), audio(), binary(), error(), mix(), widget()

Server methods: server.tool(), server.resource(), server.resourceTemplate(), server.prompt(), server.listen()