BrowserTools MCP
MCP server + Chrome extension that lets Cursor and other MCP IDEs read live browser logs, network, and screenshots.
🛡️ AgentReady threat assessment
MAESTRO 7-layer threat model + OWASP AIVSS risk score for BrowserTools MCP, derived from its capabilities.
AIVSS 9.1 · Critical
View MAESTRO 7-layer threat model →Overview
BrowserTools ships an MCP server plus a companion Chrome extension and a local Node middleware server, letting Cursor (and other MCP-compatible agents) monitor browser console logs, network requests, and capture screenshots for debugging web apps. Installed into Cursor as an MCP server. Security surface: runs a local Node server and a browser extension that stream page/network data to the agent.
Key features
- Live console + network log access
- Screenshot capture from the browser
- Local middleware + Chrome extension
Use cases
- Debug web apps from inside Cursor
- Feed real browser telemetry to the agent