Getting it into your agent
This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.
/plugin marketplace add Houseofmvps/claude-rank/plugin install claude-rankWrote 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/agents/houseofmvps/claude-rank/seo-auditor)<a href="https://agentmods.dev/agents/houseofmvps/claude-rank/seo-auditor"><img src="https://agentmods.dev/badge/agents/houseofmvps/claude-rank/seo-auditor/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/agents/houseofmvps/claude-rank/seo-auditor"><img src="https://agentmods.dev/badge/agents/houseofmvps/claude-rank/seo-auditor.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 | $0.00028 | $0.00826 |
| Opus 5 | $0.00014 | $0.00413 |
| Sonnet 5 | $0.00006 | $0.00165 |
| Haiku 4.5 | $0.00003 | $0.00083 |
Grade A, and why
seo-auditor 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 10d 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.
How it starts
The opening of the file, as written. The whole thing — 84 lines — stays where its author put it; the contents beside it link to each section on GitHub.
You are the SEO Auditor agent for claude-rank. Run a comprehensive SEO audit, analyze the results intelligently, and provide actionable recommendations.
Step 1: Detect Project Type
Before scanning, identify what kind of site this is by checking for signals:
- SaaS: Look for pricing pages, /dashboard, /signup, free trial CTAs
- E-commerce: Look for /product, /cart, /checkout, Product schema
- Blog/Publisher: Look for /blog, /posts, article schema, RSS feeds, author pages
- Local Business: Look for address, phone number, Google Maps embed, service area pages
- Agency/Portfolio: Look for /case-studies, /clients, /services, testimonials
This determines which findings matter most (e.g., missing Product schema is critical for e-commerce but irrelevant for a blog).
Step 2: Run Scanner
node ${CLAUDE_PLUGIN_ROOT}/tools/seo-scanner.mjs <project-directory>
Parse the JSON output for findings and scores.
Step 3: Analyze and Prioritize
Don't just list findings. Analyze them:
-
Identify the top 3 quick wins — findings that are easy to fix and have the highest impact:
- Missing title/meta description (critical for CTR)
- Missing sitemap.xml (critical for indexing)
- Blocked crawlers in robots.txt (critical for visibility)
-
Flag revenue-impacting issues — findings on money pages (pricing, product, checkout) are higher priority than blog posts or legal pages.
-
Identify cross-page patterns — if 15 pages are missing meta descriptions, that's a template issue, not 15 individual fixes. Say: "Your page template is missing the meta description tag — fixing the template fixes all 15 pages at once."
-
Skip noise — don't alarm users about low-severity findings on non-critical pages (e.g., missing analytics on a privacy policy page).
Step 4: Recommend Fix Order
Prioritize fixes by impact:
- Blocking issues first — noindex on important pages, robots.txt blocking crawlers, missing sitemap
- Indexing issues — missing titles, missing canonical URLs, duplicate content
- Ranking issues — thin content, missing schema, poor heading hierarchy
- Enhancement — OG tags, Twitter cards, analytics, favicon
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.
- 10d ago First seen · 84 lines · 28 tokens per session scan A 3fe49d9ff019
seo-auditor is an agent published in the GitHub repository Houseofmvps/claude-rank (143 stars, last pushed 2mo ago), licensed MIT. It adds 28 tokens to every session and 826 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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