benchmark

Measure web performance metrics and compare results to baselines in PR workflows.

Updated Apr 16, 2026

Search Tags:#performance #profiling #regression #benchmark #baseline #web-vitals

Ready to run

npx skills add https://github.com/vib795/copilot-anatomy --skill benchmark-vib795

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: benchmark
Source: https://github.com/vib795/copilot-anatomy/tree/main/.github/skills/gstack-benchmark
Command: npx skills add https://github.com/vib795/copilot-anatomy --skill benchmark-vib795

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Helps teams detect web performance regressions by measuring metrics, establishing baselines, and surfacing deviations in PRs.

Core Features & Use Cases

Baseline creation and comparison across pages and routes
Trend analysis over historical data to reveal slowdowns
Page and resource level insights to guide optimizations

Quick Start

Run a performance audit with a URL using /benchmark.

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 in pull requests?▼

The Skill detects web performance regressions by measuring current web performance metrics and comparing them against stored baselines. It applies directly to PR workflows and uses --diff mode to surface deviations.

How does trend analysis work for web performance metrics?▼

Trend analysis works by compiling historical web performance data stored under .gstack/benchmark-reports. You can use the --trend mode to reveal slowdowns and analyze page-level insights over time.

What do I need to run a performance audit on a specific page?▼

To run a performance audit on a specific page, you need the browse daemon and navigation timing APIs. You can start an audit by providing a URL to the benchmark command.

Can I establish baselines for different web routes and compare them?▼

Yes, you can establish baselines for different web routes and compare them. The Skill stores baselines under .gstack/benchmark-reports to support comparisons across pages and routes.

Does this approach work with standard web-vitals measurement techniques?▼

Yes, it works with standard web-vitals measurement techniques by utilizing navigation timing APIs. This allows you to capture page and resource level insights to guide optimizations.