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mcp/harbor
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Iron/Out UX Score Benchmark MCP

v1.0.0

io.iron-out/ux-benchmark

UX Score and Web Vitals (TTFB, FCP, LCP, INP, CLS) for any website, from real-user CrUX data.

transport:streamable-http tools:2
Website

Target client

run in your project directory 

claude mcp add --transport http ux-benchmark https://www.iron-out.io/mcp

setup guides: Claude Code Claude Desktop Cursor VS Code Zed Windsurf Cline Gemini CLI Grok ChatGPT Claude.ai LangChain

Adds it for this project only. Append --scope user to make it available everywhere. Claude Code docs

run_ux_benchmark Mutating

run ux benchmark

compare_sites

compare sites

All 2 tools, one page each

Mutating and Read-only are read off each tool's name, not its schema — a hint, not a guarantee. Check the server's own documentation before granting access.