npm install @vercel/mcp-adapter @modelcontextprotocol/sdk
# or
yarn add @vercel/mcp-adapter @modelcontextprotocol/sdk
# or
pnpm add @vercel/mcp-adapter @modelcontextprotocol/sdk
# or
bun add @vercel/mcp-adapter @modelcontextprotocol/sdk

// app/api/[transport]/route.ts
import { createMcpHandler } from '@vercel/mcp-adapter';
const handler = createMcpHandler(
  server => {
    server.tool(
      'roll_dice',
      'Rolls an N-sided die',
      {
        sides: z.number().int().min(2)
      },
      async ({ sides }) => {
        const value = 1 + Math.floor(Math.random() * sides);
        return {
          content: [{ type: 'text', text: `🎲 You rolled a ${value}!` }],
        };
      }
    );
  },
  {
    // Optional server options
  },
  {
    // Optional redis config
    redisUrl: process.env.REDIS_URL,
    // You need these endpoints
    basePath: '/api', // this needs to match where the [transport] is located.
    // @deprecated use 'basePath' instead
    streamableHttpEndpoint?: string; // Endpoint for streamable HTTP transport
    // @deprecated use 'basePath' instead
    sseEndpoint?: string; // Endpoint for SSE transport
    // @deprecated use 'basePath' instead
    sseMessageEndpoint?: string; // Endpoint for SSE message transport
    maxDuration: 60,
    verboseLogs: true,
  }
);
export { handler as GET, handler as POST };

"remote-example": {
  "command": "npx",
  "args": [
    "mcp-remote",
    "http://localhost:3000/api/mcp" // this is your app/api/[transport]/route.ts
  ]
}

// app/components/YourComponent.tsx
import { McpClient } from "@modelcontextprotocol/sdk/client";

const client = new McpClient({
  // When using basePath, the SSE endpoint will be automatically derived
  transport: new SSEClientTransport("/api/mcp/mcp"),
});

// Use the client to make requests
const result = await client.request("yourMethod", { param: "value" });

interface Config {
  redisUrl?: string; // Redis connection URL for pub/sub
  basePath?: string; // string; // Base path for MCP endpoints
  maxDuration?: number; // Maximum duration for SSE connections in seconds
  verboseLogs?: boolean; // Log debugging information
}