The Next.js and Vercel for internal MCP servers

import { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js";
import { z } from "zod";

export default function createMcpServer({ implementation }: Options) {
  const mcpServer = new McpServer(implementation);
  mcpServer.tool(
    "roll_dice",
    "Rolls an N-sided dice",
    { sides: z.number().int().min(2) },
    ({ sides }) => {
      const value = 1 + Math.floor(Math.random() * sides);
      return { content: [{ type: "text", text: `🎲 You rolled a ${value}!` }] };
    },
  );
  return mcpServer;
}