getNetworkErrors
Only failed and 4xx/5xx requests
How to use it
Project documentation lists getNetworkErrors for the Browser Tools MCP MCP server. Add the server to your MCP client (Claude Desktop, Cursor, Windsurf and others), then check which tools your installed version makes available. Tool availability can depend on configuration and credentials. A server handshake does not verify this tool’s behavior. See the full listing for setup details.
Install Browser Tools MCP
npx @agentdeskai/browser-tools-server --verboseOther tools in Browser Tools MCP (15)
localStorage, sessionStorage and cookies (values gated)
Whether the extension is connected, and capture counts
Error-level output and uncaught exceptions
Console output, filterable by keyword with paging
XHR/fetch requests with status, timing and bodies
Which page the browser is currently on
The element selected in the Elements panel
Every tab with DevTools open, and the id to address it by
Reloads the inspected tab
Lighthouse accessibility audit
Lighthouse best-practices audit
Lighthouse performance audit with Core Web Vitals
Lighthouse SEO audit
Screenshot returned as an image, plus its file path
Clears captured telemetry before a clean reproduction