Playwright SSE MCP Server

import express, { Request, Response } from "express"; import { SSEServerTransport } from "@modelcontextprotocol/sdk/server/sse.js"; import { createServer } from "@playwright/mcp"; const app = express(); const transports: { [sessionId: string]: SSEServerTransport } = {}; app.get("/sse", async (_: Request, res: Response) => { const transport = new SSEServerTransport("/messages", res); transports[transport.sessionId] = transport; res.on("close", () => { delete transports[transport.sessionId]; }); const server = createServer({ launchOptions: { headless: true }, }); await server.connect(transport); }); app.post("/messages", async (req: Request, res: Response) => { const sessionId = req.query.sessionId as string; const transport = transports[sessionId]; if (transport) { await transport.handlePostMessage(req, res); } else { res.status(400).send("No transport found for sessionId"); } }); const PORT = process.env.PORT || 3002; app.listen(PORT, () => { console.log(`Server is running on port ${PORT}`); });