Jokes MCP Server

import express, { Request, Response } from "express"; import { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js"; import { StreamableHTTPServerTransport } from "@modelcontextprotocol/sdk/server/streamableHttp.js"; import { z } from "zod"; const server = new McpServer({ name: "mcp-streamable-http", version: "1.0.0", }); // DHL Shipment Tracking Tool const trackShipment = server.tool( "track-shipment", "Track a shipment using DHL API", { trackingNumber: z.string().describe("The tracking number for the shipment"), apiKey: z.string().describe("User's DHL API key"), }, async (params: { trackingNumber: string; apiKey: string }) => { const response = await fetch(`https://api-eu.dhl.com/track/shipments?trackingNumber=${params.trackingNumber}`, { headers: { "DHL-API-Key": params.apiKey, "Accept": "application/json", }, }); if (!response.ok) { throw new Error(`Error fetching shipment: ${response.statusText}`); } const data = await response.json(); return { content: [ { type: "text", text: JSON.stringify(data, null, 2), // Format the response for better readability }, ], }; } ); const app = express(); app.use(express.json()); const transport: StreamableHTTPServerTransport = new StreamableHTTPServerTransport({ sessionIdGenerator: undefined, // set to undefined for stateless servers }); // Setup routes for the server const setupServer = async () => { await server.connect(transport); }; app.post("/mcp", async (req: Request, res: Response) => { console.log("Received MCP request:", req.body); try { await transport.handleRequest(req, res, req.body); } catch (error) { console.error("Error handling MCP request:", error); if (!res.headersSent) { res.status(500).json({ jsonrpc: "2.0", error: { code: -32603, message: "Internal server error", }, id: null, }); } } }); // Other routes (GET, DELETE) remain unchanged... // Start the server const PORT = process.env.PORT || 3000; setupServer() .then(() => { app.listen(PORT, () => { console.log(`MCP Streamable HTTP Server listening on port ${PORT}`); }); }) .catch((error) => { console.error("Failed to set up the server:", error); process.exit(1); });