From 28540634d7027934cf622b90c92213784a6af412 Mon Sep 17 00:00:00 2001 From: Aaron Elijah Mars Date: Mon, 23 Jun 2025 17:13:12 +0200 Subject: [PATCH] fix --- extension/background.js | 495 -------------- extension/content.js | 13 - extension/manifest.json | 42 -- extension/popup.html | 81 --- extension/popup.js | 92 --- mcp-server/.env.example | 4 - mcp-server/package-lock.json | 1230 ---------------------------------- mcp-server/package.json | 17 - mcp-server/server.js | 418 ------------ 9 files changed, 2392 deletions(-) delete mode 100644 extension/background.js delete mode 100644 extension/content.js delete mode 100644 extension/manifest.json delete mode 100644 extension/popup.html delete mode 100644 extension/popup.js delete mode 100644 mcp-server/.env.example delete mode 100644 mcp-server/package-lock.json delete mode 100644 mcp-server/package.json delete mode 100644 mcp-server/server.js diff --git a/extension/background.js b/extension/background.js deleted file mode 100644 index 70f218e..0000000 --- a/extension/background.js +++ /dev/null @@ -1,495 +0,0 @@ -// MCP Server connection configuration -const MCP_SERVER_URL = "ws://localhost:3000"; -let mcpSocket = null; -let reconnectInterval = null; -let reconnectAttempts = 0; - -// Initialize WebSocket connection to MCP server -function connectToMCPServer() { - if ( - mcpSocket && - (mcpSocket.readyState === WebSocket.OPEN || - mcpSocket.readyState === WebSocket.CONNECTING) - ) { - console.log("Already connected or connecting to MCP server"); - return; - } - - console.log("Attempting to connect to MCP server at", MCP_SERVER_URL); - - try { - mcpSocket = new WebSocket(MCP_SERVER_URL); - - mcpSocket.onopen = () => { - console.log("Connected to MCP server"); - clearInterval(reconnectInterval); - reconnectInterval = null; - reconnectAttempts = 0; - - // Register available browser functions - mcpSocket.send( - JSON.stringify({ - type: "register", - tools: getAvailableTools(), - }) - ); - - // Notify popup of connection - try { - chrome.runtime.sendMessage({ type: "statusUpdate", connected: true }); - } catch (e) { - // Popup might not be open - } - }; - - mcpSocket.onmessage = async (event) => { - try { - const message = JSON.parse(event.data); - await handleMCPRequest(message); - } catch (error) { - console.error("Error handling message:", error); - } - }; - - mcpSocket.onclose = (event) => { - console.log("Disconnected from MCP server", event.code, event.reason); - - // Notify popup of disconnection - try { - chrome.runtime.sendMessage({ type: "statusUpdate", connected: false }); - } catch (e) { - // Popup might not be open - } - - // Reset socket reference - mcpSocket = null; - - // Attempt to reconnect with exponential backoff - if (!reconnectInterval) { - const delay = Math.min(5000 * Math.pow(1.5, reconnectAttempts), 30000); - reconnectAttempts++; - console.log(`Reconnecting in ${delay / 1000} seconds...`); - reconnectInterval = setTimeout(() => { - reconnectInterval = null; - connectToMCPServer(); - }, delay); - } - }; - - mcpSocket.onerror = (error) => { - console.error("MCP connection error:", error); - console.error("Make sure the MCP server is running on port 3000"); - }; - } catch (error) { - console.error("Failed to create WebSocket:", error); - // Try again in 5 seconds - if (!reconnectInterval) { - reconnectInterval = setTimeout(() => { - reconnectInterval = null; - connectToMCPServer(); - }, 5000); - } - } -} - -// Define available browser tools for MCP -function getAvailableTools() { - return [ - { - name: "browser_navigate", - description: "Navigate to a URL in the active tab", - inputSchema: { - type: "object", - properties: { - url: { type: "string", description: "URL to navigate to" }, - }, - required: ["url"], - }, - }, - { - name: "browser_get_tabs", - description: "Get all open tabs", - inputSchema: { - type: "object", - properties: {}, - }, - }, - { - name: "browser_create_tab", - description: "Create a new tab", - inputSchema: { - type: "object", - properties: { - url: { type: "string", description: "URL for the new tab" }, - active: { - type: "boolean", - description: "Whether to make the tab active", - }, - }, - }, - }, - { - name: "browser_close_tab", - description: "Close a tab by ID", - inputSchema: { - type: "object", - properties: { - tabId: { type: "number", description: "ID of the tab to close" }, - }, - required: ["tabId"], - }, - }, - { - name: "browser_execute_script", - description: "Execute JavaScript in the active tab", - inputSchema: { - type: "object", - properties: { - code: { type: "string", description: "JavaScript code to execute" }, - }, - required: ["code"], - }, - }, - { - name: "browser_get_page_content", - description: "Get the content of the active page", - inputSchema: { - type: "object", - properties: { - selector: { - type: "string", - description: "CSS selector to get specific content", - }, - }, - }, - }, - { - name: "browser_take_screenshot", - description: "Take a screenshot of the active tab", - inputSchema: { - type: "object", - properties: { - format: { - type: "string", - enum: ["png", "jpeg"], - description: "Image format", - }, - }, - }, - }, - { - name: "browser_get_bookmarks", - description: "Get browser bookmarks", - inputSchema: { - type: "object", - properties: { - query: { type: "string", description: "Search query for bookmarks" }, - }, - }, - }, - { - name: "browser_add_bookmark", - description: "Add a bookmark", - inputSchema: { - type: "object", - properties: { - title: { type: "string", description: "Bookmark title" }, - url: { type: "string", description: "Bookmark URL" }, - }, - required: ["title", "url"], - }, - }, - { - name: "browser_get_history", - description: "Search browser history", - inputSchema: { - type: "object", - properties: { - query: { type: "string", description: "Search query" }, - maxResults: { - type: "number", - description: "Maximum number of results", - }, - }, - }, - }, - { - name: "browser_get_cookies", - description: "Get cookies for a domain", - inputSchema: { - type: "object", - properties: { - domain: { type: "string", description: "Domain to get cookies for" }, - }, - }, - }, - { - name: "browser_fill_form", - description: "Fill a form on the current page", - inputSchema: { - type: "object", - properties: { - formData: { - type: "object", - description: "Key-value pairs of form field names/IDs and values", - }, - }, - required: ["formData"], - }, - }, - { - name: "browser_click_element", - description: "Click an element on the page", - inputSchema: { - type: "object", - properties: { - selector: { - type: "string", - description: "CSS selector of element to click", - }, - }, - required: ["selector"], - }, - }, - ]; -} - -// Handle MCP requests -async function handleMCPRequest(message) { - const { id, method, params } = message; - - try { - let result; - - switch (method) { - case "browser_navigate": - result = await navigateToUrl(params.url); - break; - case "browser_get_tabs": - result = await getTabs(); - break; - case "browser_create_tab": - result = await createTab(params); - break; - case "browser_close_tab": - result = await closeTab(params.tabId); - break; - case "browser_execute_script": - result = await executeScript(params.code); - break; - case "browser_get_page_content": - result = await getPageContent(params.selector); - break; - case "browser_take_screenshot": - result = await takeScreenshot(params.format); - break; - case "browser_get_bookmarks": - result = await getBookmarks(params.query); - break; - case "browser_add_bookmark": - result = await addBookmark(params); - break; - case "browser_get_history": - result = await getHistory(params); - break; - case "browser_get_cookies": - result = await getCookies(params.domain); - break; - case "browser_fill_form": - result = await fillForm(params.formData); - break; - case "browser_click_element": - result = await clickElement(params.selector); - break; - default: - throw new Error(`Unknown method: ${method}`); - } - - // Send success response - mcpSocket.send( - JSON.stringify({ - id, - result, - }) - ); - } catch (error) { - // Send error response - mcpSocket.send( - JSON.stringify({ - id, - error: { - message: error.message, - code: -32603, - }, - }) - ); - } -} - -// Browser function implementations -async function navigateToUrl(url) { - const [activeTab] = await chrome.tabs.query({ - active: true, - currentWindow: true, - }); - await chrome.tabs.update(activeTab.id, { url }); - return { success: true, tabId: activeTab.id }; -} - -async function getTabs() { - const tabs = await chrome.tabs.query({}); - return tabs.map((tab) => ({ - id: tab.id, - title: tab.title, - url: tab.url, - active: tab.active, - windowId: tab.windowId, - })); -} - -async function createTab(params) { - const tab = await chrome.tabs.create({ - url: params.url || "about:blank", - active: params.active !== false, - }); - return { id: tab.id, windowId: tab.windowId }; -} - -async function closeTab(tabId) { - await chrome.tabs.remove(tabId); - return { success: true }; -} - -async function executeScript(code) { - const [activeTab] = await chrome.tabs.query({ - active: true, - currentWindow: true, - }); - const results = await chrome.scripting.executeScript({ - target: { tabId: activeTab.id }, - func: new Function(code), - }); - return results[0].result; -} - -async function getPageContent(selector) { - const [activeTab] = await chrome.tabs.query({ - active: true, - currentWindow: true, - }); - const results = await chrome.scripting.executeScript({ - target: { tabId: activeTab.id }, - func: (sel) => { - if (sel) { - const element = document.querySelector(sel); - return element ? element.innerText : null; - } - return document.body.innerText; - }, - args: [selector], - }); - return results[0].result; -} - -async function takeScreenshot(format = "png") { - const dataUrl = await chrome.tabs.captureVisibleTab(null, { format }); - return { dataUrl, format }; -} - -async function getBookmarks(query) { - if (query) { - return await chrome.bookmarks.search(query); - } - return await chrome.bookmarks.getTree(); -} - -async function addBookmark(params) { - const bookmark = await chrome.bookmarks.create({ - title: params.title, - url: params.url, - }); - return bookmark; -} - -async function getHistory(params) { - const historyItems = await chrome.history.search({ - text: params.query || "", - maxResults: params.maxResults || 100, - }); - return historyItems; -} - -async function getCookies(domain) { - const cookies = await chrome.cookies.getAll({ domain }); - return cookies; -} - -async function fillForm(formData) { - const [activeTab] = await chrome.tabs.query({ - active: true, - currentWindow: true, - }); - const results = await chrome.scripting.executeScript({ - target: { tabId: activeTab.id }, - func: (data) => { - for (const [key, value] of Object.entries(data)) { - const element = document.querySelector(`[name="${key}"], #${key}`); - if (element) { - element.value = value; - element.dispatchEvent(new Event("input", { bubbles: true })); - } - } - return { success: true, filled: Object.keys(data).length }; - }, - args: [formData], - }); - return results[0].result; -} - -async function clickElement(selector) { - const [activeTab] = await chrome.tabs.query({ - active: true, - currentWindow: true, - }); - const results = await chrome.scripting.executeScript({ - target: { tabId: activeTab.id }, - func: (sel) => { - const element = document.querySelector(sel); - if (element) { - element.click(); - return { success: true, clicked: sel }; - } - throw new Error(`Element not found: ${sel}`); - }, - args: [selector], - }); - return results[0].result; -} - -// Initialize connection when extension loads -connectToMCPServer(); - -// Heartbeat to keep connection alive -setInterval(() => { - if (mcpSocket && mcpSocket.readyState === WebSocket.OPEN) { - mcpSocket.send(JSON.stringify({ type: "ping", timestamp: Date.now() })); - } -}, 30000); // Every 30 seconds - -// Handle messages from popup -chrome.runtime.onMessage.addListener((request, sender, sendResponse) => { - if (request.action === "getStatus") { - sendResponse({ - connected: mcpSocket && mcpSocket.readyState === WebSocket.OPEN, - }); - } else if (request.action === "reconnect") { - connectToMCPServer(); - sendResponse({ success: true }); - } else if (request.action === "test") { - if (mcpSocket && mcpSocket.readyState === WebSocket.OPEN) { - mcpSocket.send(JSON.stringify({ type: "test", timestamp: Date.now() })); - } - sendResponse({ success: true }); - } - return true; // Keep the message channel open -}); diff --git a/extension/content.js b/extension/content.js deleted file mode 100644 index af3486f..0000000 --- a/extension/content.js +++ /dev/null @@ -1,13 +0,0 @@ -// Content script for interacting with web pages -console.log('MCP Browser Bridge content script loaded'); - -// Listen for messages from the background script -chrome.runtime.onMessage.addListener((request, sender, sendResponse) => { - if (request.action === 'getPageInfo') { - sendResponse({ - title: document.title, - url: window.location.href, - content: document.body.innerText - }); - } -}); \ No newline at end of file diff --git a/extension/manifest.json b/extension/manifest.json deleted file mode 100644 index 891a47b..0000000 --- a/extension/manifest.json +++ /dev/null @@ -1,42 +0,0 @@ -{ - "manifest_version": 3, - "name": "Browser MCP Bridge", - "version": "1.0.0", - "description": "Exposes browser functions through Model Context Protocol", - "permissions": [ - "tabs", - "activeTab", - "storage", - "bookmarks", - "history", - "downloads", - "cookies", - "webNavigation", - "scripting", - "nativeMessaging", - "contextMenus", - "notifications", - "alarms", - "clipboardRead", - "clipboardWrite" - ], - "host_permissions": [""], - "background": { - "service_worker": "background.js" - }, - "action": { - "default_popup": "popup.html", - "default_title": "MCP Browser Bridge" - }, - "content_scripts": [ - { - "matches": [""], - "js": ["content.js"], - "run_at": "document_idle" - } - ], - "externally_connectable": { - "ids": ["*"], - "matches": ["http://localhost/*"] - } -} diff --git a/extension/popup.html b/extension/popup.html deleted file mode 100644 index 968579d..0000000 --- a/extension/popup.html +++ /dev/null @@ -1,81 +0,0 @@ - - - - MCP Browser Bridge - - - -

MCP Browser Bridge

- -
-
- Checking connection... -
- -
- Server: ws://localhost:3000
- Available Tools: 0 -
- - - - -
-
Waiting for activity...
-
- - - - diff --git a/extension/popup.js b/extension/popup.js deleted file mode 100644 index e178838..0000000 --- a/extension/popup.js +++ /dev/null @@ -1,92 +0,0 @@ -// Popup script for status display -let logContainer = document.getElementById("log"); -let statusIndicator = document.getElementById("statusIndicator"); -let statusText = document.getElementById("statusText"); -let toolCount = document.getElementById("toolCount"); - -// Get initial tool count -const tools = 13; // Number of tools we expose -toolCount.textContent = tools; - -// Check connection status -function checkStatus() { - if (chrome.runtime?.id) { - chrome.runtime.sendMessage({ action: "getStatus" }, (response) => { - if (chrome.runtime.lastError) { - console.error("Runtime error:", chrome.runtime.lastError); - updateStatus(false); - addLog("Error: Extension background script not responding"); - } else { - updateStatus(response?.connected || false); - } - }); - } else { - updateStatus(false); - addLog("Error: Extension context invalid"); - } -} - -// Check status on load and periodically -checkStatus(); -setInterval(checkStatus, 2000); - -// Update UI based on connection status -function updateStatus(connected) { - if (connected) { - statusIndicator.className = "status-indicator connected"; - statusText.textContent = "Connected to MCP server"; - } else { - statusIndicator.className = "status-indicator disconnected"; - statusText.textContent = "Disconnected from MCP server"; - } -} - -// Reconnect button -document.getElementById("reconnectBtn").addEventListener("click", () => { - if (chrome.runtime?.id) { - chrome.runtime.sendMessage({ action: "reconnect" }, (response) => { - if (chrome.runtime.lastError) { - addLog("Error: " + chrome.runtime.lastError.message); - } else { - addLog("Attempting to reconnect..."); - setTimeout(checkStatus, 1000); - } - }); - } -}); - -// Test button -document.getElementById("testBtn").addEventListener("click", () => { - if (chrome.runtime?.id) { - chrome.runtime.sendMessage({ action: "test" }, (response) => { - if (chrome.runtime.lastError) { - addLog("Error: " + chrome.runtime.lastError.message); - } else { - addLog("Sending test message..."); - } - }); - } -}); - -// Add log entry -function addLog(message) { - const entry = document.createElement("div"); - entry.textContent = `[${new Date().toLocaleTimeString()}] ${message}`; - logContainer.appendChild(entry); - - // Keep only last 20 entries - while (logContainer.children.length > 20) { - logContainer.removeChild(logContainer.firstChild); - } - - logContainer.scrollTop = logContainer.scrollHeight; -} - -// Listen for updates from background script -chrome.runtime.onMessage.addListener((message, sender, sendResponse) => { - if (message.type === "statusUpdate") { - updateStatus(message.connected); - } else if (message.type === "log") { - addLog(message.message); - } -}); diff --git a/mcp-server/.env.example b/mcp-server/.env.example deleted file mode 100644 index 19bd8fd..0000000 --- a/mcp-server/.env.example +++ /dev/null @@ -1,4 +0,0 @@ -# MCP Server Configuration -PORT=3000 -HEALTH_PORT=3001 -NODE_ENV=development \ No newline at end of file diff --git a/mcp-server/package-lock.json b/mcp-server/package-lock.json deleted file mode 100644 index a22242a..0000000 --- a/mcp-server/package-lock.json +++ /dev/null @@ -1,1230 +0,0 @@ -{ - 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"version": "1.0.0", - "description": "MCP server for browser automation", - "main": "server.js", - "scripts": { - "start": "node server.js", - "dev": "nodemon server.js" - }, - "dependencies": { - "ws": "^8.16.0", - "express": "^4.18.2" - }, - "devDependencies": { - "nodemon": "^3.0.2" - } -} \ No newline at end of file diff --git a/mcp-server/server.js b/mcp-server/server.js deleted file mode 100644 index 4c48d61..0000000 --- a/mcp-server/server.js +++ /dev/null @@ -1,418 +0,0 @@ -#!/usr/bin/env node - -const WebSocket = require("ws"); -const express = require("express"); - -// WebSocket server for Chrome Extension -const wss = new WebSocket.Server({ port: 3000 }); -let chromeExtensionSocket = null; -let availableTools = []; - -// Tool call tracking -const pendingCalls = new Map(); - -// Simple MCP protocol implementation over stdio -async function handleMCPRequest(request) { - const { method, params, id } = request; - - // Handle notifications (no id means it's a notification) - if (!id && method && method.startsWith("notifications/")) { - console.error(`Received notification: ${method}`); - return null; // No response needed for notifications - } - - // Handle requests that don't need implementation - if (id === undefined || id === null) { - return null; // No response for notifications - } - - try { - let result; - - switch (method) { - case "initialize": - // RESPOND IMMEDIATELY - don't wait for extension - console.error(`MCP client initializing: ${params?.clientInfo?.name || "unknown"}`); - result = { - protocolVersion: "2024-11-05", - capabilities: { - tools: {}, - }, - serverInfo: { - name: "browser-mcp-server", - version: "1.0.0", - }, - instructions: "Browser automation tools via Chrome Extension bridge. Extension may take a moment to connect." - }; - break; - - case "tools/list": - // Return tools even if extension not connected yet - if (availableTools.length > 0) { - result = { - tools: availableTools.map((tool) => ({ - name: tool.name, - description: tool.description, - inputSchema: tool.inputSchema, - })), - }; - } else { - // Return static tools with note that extension is connecting - result = { - tools: getStaticTools().map(tool => ({ - ...tool, - description: tool.description + " (Extension connecting...)" - })) - }; - } - break; - - case "tools/call": - if (!chromeExtensionSocket || chromeExtensionSocket.readyState !== WebSocket.OPEN) { - // Extension not connected - return helpful error - result = { - content: [ - { - type: "text", - text: "❌ Chrome Extension not connected. Please install and activate the browser extension, then try again.\n\nSetup instructions:\n1. Go to chrome://extensions/\n2. Enable Developer mode\n3. Click 'Load unpacked' and select the extension folder\n4. Ensure the extension is active", - }, - ], - isError: true - }; - } else { - // Extension connected - try the tool call - try { - const toolResult = await callBrowserTool( - params.name, - params.arguments || {} - ); - result = { - content: [ - { - type: "text", - text: JSON.stringify(toolResult, null, 2), - }, - ], - isError: false - }; - } catch (error) { - result = { - content: [ - { - type: "text", - text: `❌ Tool execution failed: ${error.message}`, - }, - ], - isError: true - }; - } - } - break; - - case "resources/list": - // Return empty resources list - result = { resources: [] }; - break; - - case "prompts/list": - // Return empty prompts list - result = { prompts: [] }; - break; - - default: - throw new Error(`Unknown method: ${method}`); - } - - return { jsonrpc: "2.0", id, result }; - } catch (error) { - return { - jsonrpc: "2.0", - id, - error: { - code: -32603, - message: error.message, - }, - }; - } -} - -// Static tool definitions for when extension isn't connected -function getStaticTools() { - return [ - { - name: "browser_navigate", - description: "Navigate to a URL in the active tab", - inputSchema: { - type: "object", - properties: { - url: { type: "string", description: "URL to navigate to" } - }, - required: ["url"] - } - }, - { - name: "browser_get_tabs", - description: "Get all open browser tabs", - inputSchema: { - type: "object", - properties: {} - } - }, - { - name: "browser_create_tab", - description: "Create a new browser tab", - inputSchema: { - type: "object", - properties: { - url: { type: "string", description: "URL for new tab" }, - active: { type: "boolean", description: "Make tab active" } - } - } - }, - { - name: "browser_close_tab", - description: "Close a tab by ID", - inputSchema: { - type: "object", - properties: { - tabId: { type: "integer", description: "Tab ID to close" } - }, - required: ["tabId"] - } - }, - { - name: "browser_execute_script", - description: "Execute JavaScript in active tab", - inputSchema: { - type: "object", - properties: { - code: { type: "string", description: "JavaScript code" } - }, - required: ["code"] - } - }, - { - name: "browser_get_page_content", - description: "Get page text content", - inputSchema: { - type: "object", - properties: { - selector: { type: "string", description: "CSS selector (optional)" } - } - } - }, - { - name: "browser_take_screenshot", - description: "Take screenshot of active tab", - inputSchema: { - type: "object", - properties: { - format: { type: "string", enum: ["png", "jpeg"], description: "Image format" } - } - } - }, - { - name: "browser_get_bookmarks", - description: "Get browser bookmarks", - inputSchema: { - type: "object", - properties: { - query: { type: "string", description: "Search query" } - } - } - }, - { - name: "browser_add_bookmark", - description: "Add a bookmark", - inputSchema: { - type: "object", - properties: { - title: { type: "string", description: "Bookmark title" }, - url: { type: "string", description: "Bookmark URL" } - }, - required: ["title", "url"] - } - }, - { - name: "browser_get_history", - description: "Search browser history", - inputSchema: { - type: "object", - properties: { - query: { type: "string", description: "Search query" }, - maxResults: { type: "integer", description: "Max results" } - } - } - }, - { - name: "browser_get_cookies", - description: "Get cookies for domain", - inputSchema: { - type: "object", - properties: { - domain: { type: "string", description: "Domain name" } - } - } - }, - { - name: "browser_fill_form", - description: "Fill form on current page", - inputSchema: { - type: "object", - properties: { - formData: { type: "object", description: "Form field data" } - }, - required: ["formData"] - } - }, - { - name: "browser_click_element", - description: "Click element on page", - inputSchema: { - type: "object", - properties: { - selector: { type: "string", description: "CSS selector" } - }, - required: ["selector"] - } - } - ]; -} - -// Call browser tool through Chrome Extension -async function callBrowserTool(toolName, args) { - if ( - !chromeExtensionSocket || - chromeExtensionSocket.readyState !== WebSocket.OPEN - ) { - throw new Error( - "Chrome Extension not connected. Make sure the extension is installed and active." - ); - } - - const callId = Date.now().toString(); - - return new Promise((resolve, reject) => { - pendingCalls.set(callId, { resolve, reject }); - - chromeExtensionSocket.send( - JSON.stringify({ - id: callId, - method: toolName, - params: args, - }) - ); - - // Timeout after 30 seconds - setTimeout(() => { - if (pendingCalls.has(callId)) { - pendingCalls.delete(callId); - reject(new Error("Tool call timeout")); - } - }, 30000); - }); -} - -// Handle tool responses from Chrome Extension -function handleToolResponse(message) { - const pending = pendingCalls.get(message.id); - if (pending) { - pendingCalls.delete(message.id); - if (message.error) { - pending.reject(new Error(message.error.message)); - } else { - pending.resolve(message.result); - } - } -} - -// Handle Chrome Extension connections -wss.on("connection", (ws) => { - console.error("Chrome Extension connected"); - chromeExtensionSocket = ws; - - // Set up ping/pong for keepalive - const pingInterval = setInterval(() => { - if (ws.readyState === WebSocket.OPEN) { - ws.ping(); - } - }, 30000); - - ws.on("message", (data) => { - try { - const message = JSON.parse(data); - - if (message.type === "register") { - availableTools = message.tools; - console.error(`Registered ${availableTools.length} browser tools`); - } else if (message.type === "ping") { - // Respond to ping with pong - ws.send(JSON.stringify({ type: "pong", timestamp: Date.now() })); - } else if (message.id) { - // Handle tool response - handleToolResponse(message); - } - } catch (error) { - console.error("Error processing message:", error); - } - }); - - ws.on("close", () => { - console.error("Chrome Extension disconnected"); - chromeExtensionSocket = null; - clearInterval(pingInterval); - }); - - ws.on("error", (error) => { - console.error("WebSocket error:", error); - }); - - ws.on("pong", () => { - // Extension is alive - }); -}); - -// Read from stdin -let inputBuffer = ""; -process.stdin.on("data", async (chunk) => { - inputBuffer += chunk.toString(); - - // Process complete lines - const lines = inputBuffer.split("\n"); - inputBuffer = lines.pop() || ""; - - for (const line of lines) { - if (line.trim()) { - try { - const request = JSON.parse(line); - const response = await handleMCPRequest(request); - - // Only send response if one was generated (not for notifications) - if (response) { - process.stdout.write(JSON.stringify(response) + "\n"); - } - } catch (error) { - console.error("Error processing request:", error); - } - } - } -}); - -// Optional: HTTP endpoint for health checks -const app = express(); -app.get("/health", (req, res) => { - res.json({ - status: "ok", - chromeExtensionConnected: chromeExtensionSocket !== null, - availableTools: availableTools.length, - }); -}); - -app.listen(3001, () => { - console.error( - "Health check endpoint available at http://localhost:3001/health" - ); -}); - -console.error("Browser MCP Server started"); -console.error("Waiting for Chrome Extension connection on ws://localhost:3000");