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.
npx skills add Infrasity-Labs/dev-gtm-claude-skills --skill seo-unlighthousegit clone --depth 1 https://github.com/Infrasity-Labs/dev-gtm-claude-skillsWrote 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.
[](https://agentmods.dev/skills/infrasity-labs/dev-gtm-claude-skills/seo-unlighthouse)<a href="https://agentmods.dev/skills/infrasity-labs/dev-gtm-claude-skills/seo-unlighthouse"><img src="https://agentmods.dev/badge/skills/infrasity-labs/dev-gtm-claude-skills/seo-unlighthouse/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/infrasity-labs/dev-gtm-claude-skills/seo-unlighthouse"><img src="https://agentmods.dev/badge/skills/infrasity-labs/dev-gtm-claude-skills/seo-unlighthouse.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00041 | $0.00422 |
| Opus 5 | $0.00020 | $0.00211 |
| Sonnet 5 | $0.00008 | $0.00084 |
| Haiku 4.5 | $0.00004 | $0.00042 |
Grade A, and why
seo-unlighthouse 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 13d 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.
This is a copy
92% identical to seo-unlighthouse — 28 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.
What it actually says
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
| Command | Effect |
|---|---|
/seo unlighthouse <url> |
Mobile audit, up to 200 routes, JSON+HTML report in a temp dir |
/seo unlighthouse <url> --device desktop |
Desktop form factor |
/seo unlighthouse <url> --max-routes 50 --output-dir ./reports |
Cap + persist |
All flags forward to scripts/unlighthouse_run.py which handles
url_safety pre-flight and subprocess timeout management.
Output handling
The wrapper reads ci-result.json from the Unlighthouse output dir and
returns it parsed. Aggregate fields:
score.performance(median across audited routes)score.accessibility,score.bestPractices,score.seo- Per-route breakdown is available in
<output_dir>/ci-result.json
Cross-skill delegation
- For single-URL field data (CrUX), use
seo-google psi/seo-google crux. - For LCP subpart decomposition on slow pages, use the
scripts/lcp_subparts.pyworkflow (Phase C).
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.
- 13d ago First seen · 47 lines · 41 tokens per session scan A 1eebd5d02773
seo-unlighthouse is a skill published in the GitHub repository Infrasity-Labs/dev-gtm-claude-skills (124 stars, last pushed 2mo ago), licensed MIT. It adds 41 tokens to every session and 422 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. It is 92% identical to seo-unlighthouse, differing in 28 lines, and is treated as a copy.
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