Borrowing it
Nothing to install: this file belongs to dallay/agentsync. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/dallay/agentsync/main/.agents/skills/seo/SKILL.mdgit clone --depth 1 https://github.com/dallay/agentsyncWrote 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/dallay/agentsync/seo)<a href="https://agentmods.dev/skills/dallay/agentsync/seo"><img src="https://agentmods.dev/badge/skills/dallay/agentsync/seo/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/dallay/agentsync/seo"><img src="https://agentmods.dev/badge/skills/dallay/agentsync/seo.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 | $0.00047 | $0.02423 |
| Opus 5.5 | $0.00019 | $0.00969 |
| Sonnet 5.5 | $0.00009 | $0.00485 |
| Haiku 4.5 | $0.00005 | $0.00242 |
Grade A, and why
seo 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
88% identical to seo — 382 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.
How it starts
The opening of the file, as written. The whole thing — 422 lines — stays where its author put it; the contents beside it link to each section on GitHub.
SEO optimization
Search engine optimization based on Lighthouse SEO audits and Google Search guidelines. Focus on technical SEO, on-page optimization, and structured data.
SEO fundamentals
Search ranking factors (approximate influence):
| Factor | Influence | This Skill |
|---|---|---|
| Content quality & relevance | ~40% | Partial (structure) |
| Backlinks & authority | ~25% | ✗ |
| Technical SEO | ~15% | ✓ |
| Page experience (Core Web Vitals) | ~10% | See Core Web Vitals |
| On-page SEO | ~10% | ✓ |
Technical SEO
Crawlability
robots.txt:
# /robots.txt
User-agent: *
Allow: /
# Block admin/private areas
Disallow: /admin/
Disallow: /api/
Disallow: /private/
# Don't block resources needed for rendering
# ❌ Disallow: /static/
Sitemap: https://example.com/sitemap.xml
Meta robots:
<!-- Default: indexable, followable -->
<meta name="robots" content="index, follow">
<!-- Noindex specific pages -->
<meta name="robots" content="noindex, nofollow">
<!-- Indexable but don't follow links -->
<meta name="robots" content="index, nofollow">
<!-- Control snippets -->
<meta name="robots" content="max-snippet:150, max-image-preview:large">
Canonical URLs:
<!-- Prevent duplicate content issues -->
<link rel="canonical" href="https://example.com/page">
<!-- Self-referencing canonical (recommended) -->
<link rel="canonical" href="https://example.com/current-page">
<!-- For paginated content -->
<link rel="canonical" href="https://example.com/products">
<!-- Or use rel="prev" / rel="next" for explicit pagination -->
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.
- 13d ago Changed a76c0970a7ee
- 1mo ago First seen · 422 lines · 47 tokens per session scan A 68a6aa4b811a
seo is a skill published in the GitHub repository dallay/agentsync (70 stars, last pushed today), licensed MIT. It adds 47 tokens to every session and 2,423 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 88% identical to seo, differing in 382 lines, and is treated as a copy.
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