benchmark

Compare performance measurements across PRs to detect regressions.

1|Updated Mar 13, 2026
One-click install
npx skills add https://github.com/cattboy/lil_bro --skill benchmark-cattboy
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: benchmark
Source: https://github.com/cattboy/lil_bro/tree/main/.claude/skills/benchmark
Command: npx skills add https://github.com/cattboy/lil_bro --skill benchmark-cattboy

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This skill automates performance regression detection by establishing baselines, comparing before/after on PRs, and tracking trends over time.

Core Features & Use Cases

  • Baseline capture for Core Web Vitals, page load times, and resource sizes.
  • PR-level comparison and trend reporting to identify regressions early.
  • Flexible modes: full audit, quick timing, and selective page sets.

Quick Start

Run /benchmark <url> to perform a full performance audit and baseline comparison.

Frequently Asked Questions about benchmark

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I detect web performance regressions across PRs?

To detect web performance regressions across PRs, you can collect baseline measurements and compare them against subsequent test runs to identify shifts in page load metrics.

What Core Web Vitals metrics can I track for performance trends?

You can track Core Web Vitals metrics including TTFB, FCP, and LCP to monitor web performance trends and establish baselines for your pages over time.

Can I benchmark specific page sets instead of a full audit?

Yes, you can benchmark specific page sets using selective modes rather than running a full audit, allowing you to target quick timing measurements or focused performance comparisons.

Do I need a browse daemon to measure web app page load times?

Yes, you need a browse daemon and JavaScript evaluation enabled to measure web app page load times, collect metrics, and store results locally for analysis and reporting.

How does baseline comparison work for web performance?

Baseline comparison for web performance works by capturing initial metrics for page sets, then comparing subsequent measurements against that stored baseline to identify regressions or improvements.

What is the best way to track web performance trends over time?

The best way to track web performance trends over time is by storing baseline results locally and using trend modes to compare ongoing PR-level measurements against those initial captured metrics.