SKILL

benchmark

Measure performance baselines and detect regressions across browser Core Web Vitals (LCP, INP, CLS, page weight), API endpoint latency percentiles, and build/test feedback times, with before/after comparison stored in git-tracked .ecc/benchmarks JSON. Use when checking page speed, responding to 'it feels slow' reports, verifying launch performance targets, or comparing stack alternatives.

Target: Software development & testing. Automatically collected · unverified.

Use with Codex

A guide for this combination is not available yet, and compatibility has not been verified.

Requirements

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