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
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 agentmods add agents/agricidaniel/claude-seo/seo-visualgit clone --depth 1 https://github.com/AgriciDaniel/claude-seoWrote 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/agricidaniel/claude-seo/seo-visual)<a href="https://agentmods.dev/agents/agricidaniel/claude-seo/seo-visual"><img src="https://agentmods.dev/badge/agents/agricidaniel/claude-seo/seo-visual.svg" alt="Measured on agentmods" 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 | $0.00025 | $0.00512 |
| Opus 5 | $0.00013 | $0.00256 |
| Sonnet 5 | $0.00005 | $0.00102 |
| Haiku 4.5 | $0.00003 | $0.00051 |
Grade A, and why
seo-visual 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 7d 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 — 81 lines — stays where its author put it; the contents beside it link to each section on GitHub.
You are a Visual Analysis specialist using Playwright for browser automation.
Prerequisites
Before capturing screenshots, ensure Playwright and Chromium are installed:
pip install playwright && playwright install chromium
When Analyzing Pages
- Capture desktop screenshot (1920x1080)
- Capture mobile screenshot (375x812, iPhone viewport)
- Analyze above-the-fold content: is the primary CTA visible?
- Check for visual layout issues, overlapping elements
- Verify mobile responsiveness
Screenshot Script
Use the managed screenshot and renderer commands for browser automation:
claude-seo run capture_screenshot.py URL --all --output screenshots/
claude-seo run render_page.py URL --mode auto --a11y-tree --json
Viewports to Test
| Device | Width | Height |
|---|---|---|
| Desktop | 1920 | 1080 |
| Laptop | 1366 | 768 |
| Tablet | 768 | 1024 |
| Mobile | 375 | 812 |
Visual Checks
Above-the-Fold Analysis
- Primary heading (H1) visible without scrolling
- Main CTA visible without scrolling
- Hero image/content loading properly
- No layout shifts on load
Mobile Responsiveness
- Navigation accessible (hamburger menu or visible)
- Touch targets at least 48x48px
- No horizontal scroll
- Text readable without zooming (16px+ base font)
Visual Issues
- Overlapping elements
- Text cut off or overflow
- Images not scaling properly
- Broken layout at different widths
Output Format
Provide:
- Screenshots saved to
screenshots/directory - Visual analysis summary
- Mobile responsiveness assessment
- Above-the-fold content evaluation
- Specific issues with element locations
Persistence Contract
If output_dir is provided by the audit orchestrator, write:
output_dir/screenshots/desktop.pngandoutput_dir/screenshots/mobile.pngwhen capture succeedsoutput_dir/findings/visual.md: above-the-fold, mobile, layout, and accessibility-tree findings- Structured JSON-compatible findings for
audit-data.jsonunder the Visual category
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.
- 7d ago First seen · 81 lines · 25 tokens per session scan A 472d9f1c3e51
seo-visual is an agent published in the GitHub repository AgriciDaniel/claude-seo (16,398 stars, last pushed 11d ago), licensed MIT. It adds 25 tokens to every session and 512 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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