Cheggin/performance-benchmark
skills/performance-benchmark/SKILL.md
Monitor Core Web Vitals (LCP, INP, CLS) using Lighthouse CI with budget thresholds and deploy gating. Use when setting up performance monitoring, defining performance budgets, tracking bundle sizes, gating deploys on performance regressions, or auditing route-level performance over time.
development
Updated Apr 25, 2026
$ install --global
skillsauthnpx skillsauth add Cheggin/skill-chain performance-benchmarkInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
Security Scan Results
3 of 9 scanners reported clean
Some scanners were skipped, did not run, or reported a non-clean status. Review each row below.
3
Scanners Passed
9
Scanners in report
Clean
TrivyContainer and dependency vulnerability scanner
95%
Clean
SemgrepStatic code analysis for vulnerabilities
95%
Clean
mcp-scan (Snyk)Model Context Protocol security validation
95%
Skipped
Snyk (dep)Open source security scanning
50%
Skipped
Socket.devSupply chain security analysis
50%
Skipped
VirusTotalMulti-engine malware detection
50%
Skipped
CrowdStrikeAdvanced threat intelligence
50%
Skipped
OSV-ScannerOpen Source Vulnerability database check
50%
Skipped
OWASP Dep-Check
50%
Last scanned: Apr 25, 2026, 8:37 PM13.8s1 file scanned
SKILL.md
- name:
- performance-benchmark
- description:
- Monitor Core Web Vitals (LCP, INP, CLS) using Lighthouse CI with budget thresholds and deploy gating. Use when setting up performance monitoring, defining performance budgets, tracking bundle sizes, gating deploys on performance regressions, or auditing route-level performance over time.
- user-invocable:
- true
- group:
- quality
- prerequisites:
- [website-creation]
- next:
- [deploy-pipeline]
- workflows:
- [build-lander, full-startup]
Performance Benchmark
Setup
- Configure Lighthouse CI to run in headless Chrome within the CI pipeline.
- Define performance budget thresholds in
stacks.yml: LCP < 2.5s, INP < 200ms, CLS < 0.1 as defaults. - Capture a baseline on first deploy for future comparison.
Audit Workflow
- Run Lighthouse audits on critical user paths: homepage, authentication flow, dashboard.
- Execute each audit 3 times; use the median to reduce noise.
- Run with both desktop and mobile throttling profiles.
- Compare current metrics against baseline or previous deploy to detect regressions.
- Block the deploy if any metric regresses beyond the configured threshold.
Bundle and Asset Tracking
- Track JS and CSS bundle sizes over time; flag bundles exceeding size budgets.
- Flag unoptimized images above the configured size threshold.
Output
Generate a performance report per route:
Route | Metric | Value | Delta | Pass/Fail
Store results for historical trend analysis. Send notifications on performance regression.
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