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Web Performance Audit

Checked
secondsky·vlatest·frontend·MIT

Helps with web development, performance optimization, auditing as part of building frontend UIs and user experiences workflows.

Repository

Install on your platform

Showing Claude Code. One command installs this skill into any of the agents below.

  1. 1

    Run this in your project

    terminal
    $ npx skills add secondsky/claude-skills --skill web-performance-audit -a claude-code

  2. Uses the open-source skills CLI and needs Node.js. Add -g to install it for your user instead of this project.

What we know about this skill

Publisher

secondsky

Taken from the source listing. We haven't verified who controls this account.

Install target

Live repository

Not pinned. Installing fetches whatever the repository holds at the time you run the command.

No human has reviewed this code. The checks below are a static scan of the files at one commit — nobody has run this skill or judged whether it works. A skill runs with whatever access you give your agent, so read the source before you install it.

Automated safety checks

scanned

This skill passed all 6 checks. We read its files at one commit and looked for the things that make a skill dangerous to run — not for whether it works.

  • Declares what it does: passed

    SKILL.md parses and declares a name and a description.

    SKILL.md exists, its frontmatter parses, and it declares a name and a description.

  • No undeclared network calls: passed

    Makes no network calls.

    Every host the skill dials — from its scripts, its config endpoints or the commands it tells the agent to run — is either well-known package and API infrastructure or declared in its own frontmatter. Links in documentation are not counted.

  • No obfuscated payloads: passed

    No encoded or obfuscated payloads.

    No base64, hex or compressed blob is decoded and then executed, and no encoded shell commands.

  • No credential access: passed

    Reads no keys, tokens, keychains or credential files.

    Neither the code nor the SKILL.md instructions read SSH keys, cloud credentials, keychains, token stores, browser cookie databases or dotfiles that hold secrets.

  • No pipe-to-shell installers: passed

    No pipe-to-shell or download-and-run installers.

    No `curl … | sh` pattern, in the code or in the instructions, that runs code fetched at run time.

  • Pinned to a commit: passed

    Scanned secondsky/claude-skills at 8837836131.

    The exact upstream commit SHA that was scanned is recorded, so the result refers to specific bytes.

Commit
8837836131
Manifest
plugins/web-performance-audit/skills/web-performance-audit/SKILL.md
Scanned
1 file, 93 lines
This is a static scan, not a review. It reads the skill's files; it does not run them, and it cannot tell you whether the skill is any good or whether the code does what its description says. A skill runs with whatever access you give your agent.
What each check looks for →

About this skill

What it does

This skill enables AI agents to conduct comprehensive audits of website performance, analyzing metrics like load times and resource efficiency. It helps identify bottlenecks that slow down user experiences across various digital platforms.

When to use it

  • Diagnosing why a specific landing page loads slowly for mobile users.
  • Evaluating the impact of recent code changes on overall site speed.
  • Preparing performance reports before launching a new feature or redesign.
  • Comparing the efficiency of different hosting configurations for an e-commerce store.

Key capabilities

  • Analyzes core web vitals and page load metrics.
  • Identifies specific resources causing delays in rendering.
  • Provides actionable insights to optimize frontend delivery.
  • Supports deep dives into network requests and asset compression.

Example prompts

  • "Run a full performance audit on our homepage and list the top three bottlenecks."
  • "Analyze how this product page performs on 4G networks compared to Wi-Fi."
  • "Audit the site's Largest Contentful Paint (LCP) and suggest specific code changes to improve it."

Tips & gotchas

Ensure the target website is publicly accessible without authentication barriers for accurate analysis. Focus on results related to user-perceived performance rather than just raw server response times.