Mmcp.market

seo-unlighthouse skill

by AgriciDaniel·AgriciDaniel/claude-seo·18k stars·MIT

Multi-page Lighthouse audit via the MIT-licensed Unlighthouse CLI. Free-tier alternative to running PageSpeed against every URL on a site, no API quota burn, runs locally.

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Install the seo-unlighthouse skill

A skill is a folder. Copy it into your agent's skills folder and the agent loads it when the task matches its description. 

git clone --depth 1 https://github.com/AgriciDaniel/claude-seo.git /tmp/claude-seo
mkdir -p ~/.claude/skills
cp -r /tmp/claude-seo/extensions/unlighthouse/skills/seo-unlighthouse ~/.claude/skills/seo-unlighthouse
available in every project

In the Claude apps, zip the folder and upload it from the Skills settings. The folder on GitHub

The instructions your agent would load

SKILL.md as published, without the frontmatter. Read it on GitHub

seo-unlighthouse

Run Lighthouse against every URL on a site (up to a configurable cap) and aggregate the results. Useful when:

  • PageSpeed Insights' free quota (25k QPD) isn't enough for a large site.
  • You want offline / local CWV measurement (CI integration, restricted environments).
  • You need a quick site-wide regression check after a deploy.

Prerequisites

  • Run extensions/unlighthouse/install.sh (no API key needed).
  • Node 18+ on $PATH.

Routing

All flags forward through "${CLAUDEPLUGINROOT}/scripts/claude-seo" run unlighthouserun.py, which handles urlsafety pre-flight and subprocess timeout management.

Output handling

The wrapper reads ci-result.json from the Unlighthouse output dir, normalizes it (the default jsonSimple reporter writes a flat JSON array of per-route results; a tolerant fallback also accepts the jsonExpanded object shape), and returns:

routes (performance, accessibility, best-practices, seo)

  • route_count: number of routes actually audited
  • aggregate_scores: median score per Lighthouse category across all audited
  • routes: the per-route breakdown (also on disk at /ci-result.json)

Route cap and per-page timeout are set via a generated unlighthouse.config.mjs passed with --config-file (the only CLI-documented way to set scanner.maxRoutes; unlighthouse-ci has no --max-routes flag). Use --page-timeout to change the per-page Lighthouse task timeout (default 60s); this is separate from the overall --timeout subprocess guard (default 600s).

Cross-skill delegation

"${CLAUDEPLUGINROOT}/scripts/claude-seo" run lcp_subparts.py workflow (Phase C).

  • For single-URL field data (CrUX), use seo-google psi / seo-google crux.
  • For LCP subpart decomposition on slow pages, use the

More skills from AgriciDaniel/claude-seo

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