Browser Tools
VerifiedBrowser monitoring and Lighthouse audits via Chrome extension for MCP IDEs.
What is the Browser Tools MCP server?
The server acts as middleware between an MCP client and a local Node.js browser-tools-server that communicates with the BrowserTools Chrome extension. It enables agents to run accessibility, performance, SEO, and Next.js-specific checks without leaving the IDE.
Installation requires the extension, the MCP server package, and a separate browser-tools-server process. The project notes it is inactive and recommends alternative solutions.
Install & connect
Add this to your MCP client config. Pick your client below and copy.
{
"mcpServers": {
"browser-tools-mcp": {
"command": "npx",
"args": [
"-y",
"@agentdeskai/browser-tools-mcp"
]
}
}
}Package: @agentdeskai/browser-tools-mcp (npm)
Other ways to install
npx
npx -y @agentdeskai/browser-tools-mcpExample prompts
Once connected, try asking your AI client:
Security & permissions
Requires local stdio transport, a running browser-tools-server on localhost, and the BrowserTools Chrome extension; no remote API keys are used.
What you can do with Browser Tools
Run page audits in Cursor
Trigger Lighthouse accessibility, performance, and SEO audits on the active browser tab directly from an MCP-compatible IDE.
Debug console and network issues
Capture and analyze browser logs and network requests while coding without switching windows.
Next.js SEO review
Execute a specialized Next.js audit prompt to surface SEO issues on the current page.
How to use Browser Tools
- 1Install the BrowserTools Chrome extension from the v1.2.0 release zip.
- 2Add `npx @agentdeskai/browser-tools-mcp@latest` to your IDE's MCP config.
- 3Run `npx @agentdeskai/browser-tools-server@latest` in a separate terminal.
- 4Open Chrome DevTools and select the BrowserToolsMCP panel.
- 5Ensure only one DevTools panel instance is open and restart Chrome if needed.
Browser Tools: pros & cons
Pros
- +Integrates Lighthouse audits directly into MCP clients
- +Supports auto-paste of screenshots into Cursor
- +Includes combined Audit and Debugger workflow modes
Cons
- –Project is marked inactive with no further updates
- –Requires three separate components and careful setup
- –Windows connectivity fixes were added but stability can vary
Frequently asked questions
No, the README states the project is no longer active and users should seek alternatives.
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