Official MCP RegistryListed
Iron/Out UX Score Benchmark
UX Score and Web Vitals (TTFB, FCP, LCP, INP, CLS) for any website, from real-user CrUX data.
First seen 2 Nov 2026. Evidence as of 2 Nov 2026.
2
Tools
From an anonymous probe
1
Source listings
Each with its own history
1
Recorded changes
Since first seen
Tools
| Tool | Description | Behaviour |
|---|---|---|
| compare_sites | Compares the Iron/Out UX Score of 2 to 5 websites side by side, using real-user Chrome UX Report (CrUX) data from the last 28 days (Web Vitals: TTFB, FCP, LCP, INP, CLS). Use this for competitor or sector comparisons. It runs no lab test or Lighthouse. Returns a ranking and a link to the full comparison. | Read-only |
| run_ux_benchmark | Returns the Iron/Out UX Score (0 to 100) for one website, using real-user Chrome UX Report (CrUX) data from the last 28 days. The score is built on five Web Vitals: TTFB (10%), FCP (15%), LCP (25%), INP (25%) and CLS (25%). Use this when the user asks how fast or user-friendly a site is for real visitors. It does not run a lab test or Lighthouse and does not load the site. Sites with too little Chrome traffic have no CrUX data and return no score. If a monthly revenue band is given, it also estimates the revenue at stake. Returns a summary and a link to the full report. | Read-only |
Change history
- Listed (registry)
| Source | Listing | First seen | Last seen | Versions |
|---|---|---|---|---|
| Official MCP Registry | io.iron-out/ux-benchmark | 2 Nov 2026 | 2 Nov 2026 | 1 |