web-perf
No security findings. Scanned 1 time, most recently 2026-02-07.
Second scanner: NVIDIA SkillSpector
SkillSpector found no issues but could not fully inspect the package, usually because SKILL.md refers to a file that is not present, so it fails closed to CAUTION instead of SAFE. Read it as "not fully checked", not as a finding. How the two scanners compare across the whole corpus: Two scanners, one corpus.
What this skill does
Analyzes web performance using Chrome DevTools MCP. Measures Core Web Vitals (FCP, LCP, TBT, CLS, Speed Index), identifies render-blocking resources, network dependency chains, layout shifts, caching issues, and accessibility gaps. Use when asked to audit, profile, debug, or optimize page load performance, Lighthouse scores, or site speed.
- Package
- 1 file, 7.4 KB
- SKILL.md
- 1017 words, 12+ sections
- Code
- None. Instructions only.
SKILL.md covers: Web Performance Audit · FIRST: Verify MCP Tools Available · Key Guidelines · Quick Reference · Workflow · Phase 1: Performance Trace · Phase 2: Core Web Vitals Analysis · Phase 3: Network Analysis · Phase 4: Accessibility Snapshot · Phase 5: Codebase Analysis · Detect Framework & Bundler · Tree-Shaking & Dead Code
Findings
No findings. SAFE
What is in the package
| File | Kind | Size |
|---|---|---|
SKILL.md | doc | 7.4 KB |
Package contents recorded 2026-10-22 at commit 75a603ba7551. The scan above ran against the version current at scan time; the two can differ if the skill has since been updated.
What we checked
- Static analyzer. Pattern rules over SKILL.md and bundled files: known-bad commands, exfiltration URLs, secrets, obfuscation.
- Llm analyzer. A language model reads the skill and reports intent-level issues the rules cannot express.
- Meta analyzer. A second model pass that validates, deduplicates and re-scores the other analyzers' findings.
What we did not check
- Runtime behaviour. The skill was not executed; findings come from reading its files.
- Anything fetched at install or run time, including remote scripts, package dependencies, and URLs the skill tells the agent to open.
- Content the analyzers cannot read: images, binaries, and some non-English text.
- Known scanner bypass classes. See the methodology and limitations page.
Sources
- Repository: https://github.com/cloudflare/skills
- Raw scan result: skills-web-perf-scan.json
- Badge for your README:
- Request a re-scan