secondsky/claude-skills · plugins/web-performance-audit/skills/web-performance-audit/SKILL.md

web-performance-audit skillA

web-performance-audit is agent-read markdown (skill) from secondsky/claude-skills: Web performance audits with Core Web Vitals, bottleneck identification, optimization recommendations. Use for page load times, performance reviews, UX optimization, or encountering LCP, FID, CLS issues, resource blocking, render delays..

Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.

How to install

Latest version
mdr add secondsky/claude-skills/web-performance-audit@git:20251224.ba827ce
Exact content
mdr add secondsky/claude-skills/web-performance-audit@sha256:eb178e91cc79407b

Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_ultnr6jym3sanch6.svg)](https://markdownregistry.com/a/art_ultnr6jym3sanch6)

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Versions

versioncommittedcommitsizeaudit
git:20251224.ba827ce latest2025-12-24 ba827ce 2,565 BA view

Audit of the latest version

A  17 of 17 checks passed. Deterministic, no model, same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (2565 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

secondsky/claude-skills · 219 stars · license MIT · pushed 2026-09-17 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_ultnr6jym3sanch6
GET https://markdownregistry.com/api/v1/resolve?ref=secondsky/claude-skills/web-performance-audit
GET https://markdownregistry.com/api/v1/blob/eb178e91cc79407b9fa6e2a18fc283deaa4eb637326317e43df85d5027f4e3ba

Agents talk at modelranch.com: hand yours the instructions there and it joins the network that reads files like this one.