Claude SEO is an open-source Claude Code plugin that runs specialized agents and skills to audit websites across technical SEO, content quality, structured data, AI-search optimization, local and e-commerce SEO, and international SEO. SEO practitioners use it to produce prioritized recommendations based on primary-source guidance, with optional extensions for external data and crawling.
Getting it into your agent
It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.
git clone --depth 1 https://github.com/AgriciDaniel/claude-seonpx agentmods add skills/agricidaniel/claude-seo/seo-firecrawlWrote 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/agricidaniel/claude-seo/seo-firecrawl)<a href="https://agentmods.dev/skills/agricidaniel/claude-seo/seo-firecrawl"><img src="https://agentmods.dev/badge/skills/agricidaniel/claude-seo/seo-firecrawl/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/agricidaniel/claude-seo/seo-firecrawl"><img src="https://agentmods.dev/badge/skills/agricidaniel/claude-seo/seo-firecrawl.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00061 | $0.02003 |
| Opus 5 | $0.00030 | $0.01001 |
| Sonnet 5 | $0.00012 | $0.00401 |
| Haiku 4.5 | $0.00006 | $0.00200 |
Grade A, and why
seo-firecrawl 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 11d 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.
Copies of this mod
4 near-identical copies found in the catalogue:
- seo-firecrawl — 98% identical, 6 lines differ
- seo-firecrawl — 98% identical, 4 lines differ
- seo-firecrawl — 97% identical, 5 lines differ
- seo-firecrawl — 92% identical, 6 lines differ
How it starts
The opening of the file, as written. The whole thing — 203 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Firecrawl Extension for Claude SEO
This skill requires the Firecrawl extension to be installed:
./extensions/firecrawl/install.sh
Check availability: Before using any Firecrawl tool, verify the MCP server
is connected by checking if firecrawl_scrape or any Firecrawl tool
is available. If tools are not available, inform the user the extension is not
installed and provide install instructions.
Quick Reference
| Command | Purpose |
|---|---|
/seo firecrawl crawl <url> |
Full-site crawl with content extraction |
/seo firecrawl map <url> |
Discover site structure (URLs only, fast) |
/seo firecrawl scrape <url> |
Single-page scrape with JS rendering |
/seo firecrawl search <query> <url> |
Search within a crawled site |
Commands
crawl -- Full-Site Crawl
Crawl an entire website starting from the given URL. Returns page content, metadata, and links for all discovered pages.
MCP Tool: firecrawl_crawl
Parameters:
url(required): Starting URL to crawllimit: Max pages to crawl (default: 100, max: 500)maxDepth: Max link depth from start URL (default: 3)includePaths: Array of glob patterns to include (e.g.,["/blog/*"])excludePaths: Array of glob patterns to exclude (e.g.,["/admin/*", "/api/*"])scrapeOptions.formats: Output formats --["markdown", "html", "links"]
SEO Usage Patterns:
- Comprehensive audit crawl: Crawl full site, extract all pages for subagent analysis
- Section-focused crawl: Use
includePathsto audit only/blog/*or/products/* - Broken link detection: Crawl with
["links"]format, check all hrefs for 404s - Content inventory: Extract all page titles, meta descriptions, H1s at scale
- SPA/JS-rendered sites: Firecrawl renders JavaScript, solving the Issue #11 problem
Example orchestration for /seo audit:
1. firecrawl_map(url) -> get all URLs (fast, no content)
2. Filter to top 50 most important pages (homepage, key sections)
3. firecrawl_crawl(url, limit=50) -> get full content
4. Feed content to seo-technical, seo-content, seo-schema agents
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 11d ago First seen · 203 lines · 61 tokens per session scan A 27f0f09b810a
seo-firecrawl is a skill published in the GitHub repository AgriciDaniel/claude-seo (16,692 stars, last pushed 15d ago), licensed MIT. It adds 61 tokens to every session and 2,003 once invoked, about $0.0003 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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