optimize-lighthouse

optimize-lighthouse is a command for Claude Code from Ashikparvez89/larouex-fullstack-plugin. It costs 0 tokens per session (129 once invoked), scanned A, a copy of optimize-lighthouse, MIT.

A command that audits a website with Lighthouse, a browser tool for measuring performance, accessibility, best practices, and search-engine readiness.

In plain words
What is it for?
Use it to improve Core Web Vitals, resource loading, caching, images, CSS, JavaScript, keyboard access, and accessibility labels.
Why use it?
It identifies slow loading, layout movement, accessibility problems, and inefficient resource handling that can hurt users and search visibility.

Command for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the larouex-fullstack-builder plugin — 80 commands, 12 agents shipped together

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add commands/ashikparvez89/larouex-fullstack-plugin/optimize-lighthouse
Clone the repo
git clone --depth 1 https://github.com/Ashikparvez89/larouex-fullstack-plugin

Made for: Claude Code.

Or install larouex-fullstack-builder, the plugin that ships this one along with the rest of its 80 commands, 12 agents.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for optimize-lighthouse

README.md
[![agentmods](https://agentmods.dev/badge/commands/ashikparvez89/larouex-fullstack-plugin/optimize-lighthouse.svg)](https://agentmods.dev/commands/ashikparvez89/larouex-fullstack-plugin/optimize-lighthouse)
Your own site
<a href="https://agentmods.dev/commands/ashikparvez89/larouex-fullstack-plugin/optimize-lighthouse"><img src="https://agentmods.dev/badge/commands/ashikparvez89/larouex-fullstack-plugin/optimize-lighthouse.svg" alt="Measured on agentmods" height="20"></a>
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 129 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 100% copy Near-identical to another mod in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00000 $0.00129
Opus 5 $0.00000 $0.00064
Sonnet 5 $0.00000 $0.00026
Haiku 4.5 $0.00000 $0.00013

Measured 2d ago against content hash c7ae7014d4d6, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

optimize-lighthouse scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

This is a copy

100% identical to optimize-lighthouse — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

commands/optimize-lighthouse.md · 2 lines

What it actually says

Run Lighthouse audit and implement recommended performance fixes. Improve Core Web Vitals: Largest Contentful Paint (LCP), First Input Delay (FID), Cumulative Layout Shift (CLS). Optimize font loading with font-display: swap and preloading. Add resource hints (preload, prefetch, preconnect) for critical resources. Fix accessibility issues: contrast, ARIA labels, keyboard navigation. Implement proper caching headers in staticwebapp.config.json. Optimize images and defer offscreen images. Minify CSS and JavaScript. Achieve 90+ scores in Performance, Accessibility, Best Practices, and SEO categories. Provide before/after comparison report.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2d ago First seen · 2 lines · 0 tokens per session scan A c7ae7014d4d6

Subscribe to this mod's changes

optimize-lighthouse is a command published in the GitHub repository Ashikparvez89/larouex-fullstack-plugin (3 stars, last pushed yesterday), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 129 tokens. A static security scan graded it A with 0 findings. It is 100% identical to optimize-lighthouse, differing in 0 lines, and is treated as a copy.