Installation

const server = new MCPServer({
  name: "my-project", // Set by create-mcp-use-app
  title: "My Custom Title", // display name - shown in clients
  version: "1.0.0",
  description: "My awesome server",
  instructions:
    "Use lookup tools before write tools; ask for confirmation before changes.",
  websiteUrl: "https://my-site.com", // Your website or docs
  favicon: "favicon.ico", // Already in public/ folder
  icons: [
    {
      src: "my-icon.svg", // Add custom icon to public/ folder
      mimeType: "image/svg+xml",
      sizes: ["512x512"],
    },
  ],
});

import { MCPServer } from "mcp-use";
import { z } from "zod";

const server = new MCPServer({
  name: "my-server",
  title: "My Server", // display name
  version: "1.0.0",
  description: "My custom MCP server",
  websiteUrl: "https://mcp-use.com",
  favicon: "favicon.ico",
  icons: [
    {
      src: "icon.svg",
      mimeType: "image/svg+xml",
      sizes: ["512x512"],
    },
  ],
});

// Define a tool
server.tool(
  {
    name: "get_weather",
    description: "Get weather for a city",
    inputSchema: z.object({
      city: z.string().describe("City name"),
    }),
    outputSchema: z.object({
      temperature: z.number(),
      condition: z.string(),
      city: z.string(),
    }),
  },
  async ({ city }) => {
    const weather = { temperature: 72, condition: "sunny", city };
    return {
      content: [{ type: "text", text: JSON.stringify(weather) }],
      structuredContent: weather,
    };
  },
);

// Start the MCP server
server.listen(3000);