Build & Ship
MCP Tools

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

const server = new McpServer({
  name: "stock-tools",
  version: "1.0.0",
});

server.tool(
  "get_stock_quote",
  "Get the latest price for a stock ticker",
  { ticker: z.string().describe("Stock ticker symbol") },
  async ({ ticker }) => {
    const res = await fetch(
      `https://api.polygon.io/v2/aggs/ticker/${ticker}/prev`
    );
    const data = await res.json();
    return {
      content: [{
        type: "text",
        text: JSON.stringify(data.results[0], null, 2),
      }],
    };
  }
);

const transport = new StdioServerTransport();
await server.connect(transport);