MCP Fetch

import puppeteer from "puppeteer" import { BrowserInstance, generateBrowserId, generatePageId, getBrowsers, getPages, PageInstance } from "../browser-instances" // Launch a new browser implementation export async function launchBrowser(headless: boolean, width: number, height: number, url?: string) { // Generate unique ID for this browser instance const id = generateBrowserId() // Launch browser with specified options const browser = await puppeteer.launch({ headless, defaultViewport: { width, height, }, args: [ `--window-size=${width},${height}`, ], }) // Store browser instance in global object const browserInstance: BrowserInstance = { id, browser, createdAt: new Date(), } const browsers = getBrowsers() browsers[id] = browserInstance // Navigate to URL if provided let initialUrl = undefined let initialPageId = undefined if (url) { try { // Get the default page (first tab) const browserPages = await browser.pages() if (browserPages.length > 0) { const defaultPage = browserPages[0] await defaultPage.goto(url, { waitUntil: 'networkidle2' }) initialUrl = defaultPage.url() // Register this page in the page tracking system const pageId = generatePageId() const pages = getPages() const pageInstance: PageInstance = { id: pageId, page: defaultPage, browserId: id, createdAt: new Date(), } pages[pageId] = pageInstance initialPageId = pageId } } catch (error) { // If navigation fails, continue but include a warning return JSON.stringify({ success: true, browserId: id, message: `Browser launched successfully with ID: ${id}`, warning: `Failed to navigate to ${url}: ${error instanceof Error ? error.message : 'Unknown error'}`, config: { headless, width, height, }, }, null, 2) } } return JSON.stringify({ success: true, browserId: id, message: `Browser launched successfully with ID: ${id}`, config: { headless, width, height, }, ...(initialUrl && { url: initialUrl }), ...(initialPageId && { pageId: initialPageId }), }, null, 2) }