MCP Fetch

import express from 'express' import cors from 'cors' import { Request, Response } from 'express' export function createHttpMockServer() { const app = express() // Middleware app.use(cors()) app.use(express.json()) app.use(express.urlencoded({ extended: true })) app.use(express.text()) // Helper to extract request info const getRequestInfo = (req: Request) => ({ url: `${req.protocol}://${req.get('host')}${req.originalUrl}`, method: req.method, headers: req.headers, origin: req.ip, args: req.query, }) // GET endpoint app.get('/get', (req: Request, res: Response) => { res.json({ ...getRequestInfo(req), data: '', files: {}, form: {}, json: null, }) }) // POST endpoint app.post('/post', (req: Request, res: Response) => { const response: any = { ...getRequestInfo(req), data: '', files: {}, form: {}, json: null, } // Handle different content types if (req.is('application/json')) { response.json = req.body response.data = JSON.stringify(req.body) } else if (req.is('application/x-www-form-urlencoded')) { response.form = req.body response.data = new URLSearchParams(req.body).toString() } else if (req.is('text/*')) { response.data = req.body } res.json(response) }) // PUT endpoint app.put('/put', (req: Request, res: Response) => { const response: any = { ...getRequestInfo(req), data: '', files: {}, form: {}, json: null, } if (req.is('application/json')) { response.json = req.body response.data = JSON.stringify(req.body) } res.json(response) }) // DELETE endpoint app.delete('/delete', (req: Request, res: Response) => { res.json({ ...getRequestInfo(req), data: '', files: {}, form: {}, json: null, }) }) // PATCH endpoint app.patch('/patch', (req: Request, res: Response) => { const response: any = { ...getRequestInfo(req), data: '', files: {}, form: {}, json: null, } if (req.is('application/json')) { response.json = req.body response.data = JSON.stringify(req.body) } res.json(response) }) // Headers endpoint app.get('/headers', (req: Request, res: Response) => { res.json({ headers: req.headers }) }) // Status code endpoint app.get('/status/:code', (req: Request, res: Response) => { const code = parseInt(req.params.code) res.status(code).json({ message: `Status code: ${code}` }) }) // JSON endpoint app.get('/json', (req: Request, res: Response) => { res.json({ slideshow: { author: "Yours Truly", date: "date of publication", slides: [ { title: "Wake up to WonderWidgets!", type: "all" }, { items: [ "Why <em>WonderWidgets</em> are great", "Who <em>buys</em> WonderWidgets" ], title: "Overview", type: "all" } ], title: "Sample Slide Show" } }) }) // Redirect endpoint app.get('/redirect/:n', (req: Request, res: Response) => { const n = parseInt(req.params.n) if (n > 1) { res.redirect(`/redirect/${n - 1}`) } else { res.redirect('/get') } }) return app }