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Performance baseline and regression detection -- page performance, API latency, build times, and before/after comparison.
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Baseado na classificação ocupacional SOC
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Turn a one-line objective into a step-by-step construction plan for multi-session, multi-agent engineering projects. Each step has a self-contained context brief so a fresh agent can execute it cold.
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Bun as runtime, package manager, bundler, and test runner. When to choose Bun vs Node, migration notes, and Vercel support.
Post-deploy monitoring -- watches deployed URLs for regressions in HTTP status, console errors, performance, content, and API health.
| name | benchmark |
| description | Performance baseline and regression detection -- page performance, API latency, build times, and before/after comparison. |
| origin | ECC |
Measure and compare performance metrics to detect regressions.
Measures real browser metrics: LCP, CLS, INP, FCP, TTFB, total page weight, JS bundle size, CSS size, image weight, network request count.
Benchmarks API endpoints: hit each endpoint 100 times, measure p50/p95/p99 latency, track response size, test under 10 concurrent requests.
Measures development feedback loop: cold build time, HMR time, test suite duration, TypeScript check time, lint time, Docker build time.
/benchmark baseline # saves current metrics
# ... make changes ...
/benchmark compare # compares against baseline
Output:
| Metric | Before | After | Delta | Verdict |
|---|---|---|---|---|
| LCP | 1.2s | 1.4s | +200ms | WARN |
| Bundle | 180KB | 175KB | -5KB | BETTER |
| Build | 12s | 14s | +2s | WARN |
Stores baselines in .ecc/benchmarks/ as JSON. Git-tracked so the team shares baselines.
/benchmark compare on every PR/canary-watch for post-deploy monitoring/browser-qa for full pre-ship checklist