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 ils15/pantheon-legacy --skill nextjs-seo-optimizationgit clone --depth 1 https://github.com/ils15/pantheon-legacyWrote 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/ils15/pantheon-legacy/nextjs-seo-optimization)<a href="https://agentmods.dev/skills/ils15/pantheon-legacy/nextjs-seo-optimization"><img src="https://agentmods.dev/badge/skills/ils15/pantheon-legacy/nextjs-seo-optimization/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/ils15/pantheon-legacy/nextjs-seo-optimization"><img src="https://agentmods.dev/badge/skills/ils15/pantheon-legacy/nextjs-seo-optimization.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 | $0.00026 | $0.03195 |
| Opus 5 | $0.00013 | $0.01597 |
| Sonnet 5 | $0.00005 | $0.00639 |
| Haiku 4.5 | $0.00003 | $0.00319 |
Grade A, and why
nextjs-seo-optimization 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 — 529 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Next.js SEO Optimization Skill
When to Use
Use this skill when:
- Building new pages requiring SEO
- Optimizing existing pages for search ranking
- Implementing dynamic metadata (products, articles)
- Adding Open Graph tags for social sharing
- Generating sitemaps and robots.txt
- Implementing structured data (Schema.org)
- Improving Core Web Vitals for ranking
Core Concepts
1. Metadata (Next.js 13+)
// app/layout.tsx
import type { Metadata } from 'next'
export const metadata: Metadata = {
title: 'MyShop - Best Deals and Coupons',
description: 'Find the best deals from top marketplaces. Exclusive coupons, free shipping and cashback.',
keywords: 'deals, coupons, cashback, free shipping',
metadataBase: new URL('https://myshop.com'),
openGraph: {
type: 'website',
locale: 'en_US',
url: 'https://myshop.com',
siteName: 'MyShop',
images: [
{
url: '/og-image.png',
width: 1200,
height: 630,
alt: 'MyShop - Best deals online'
}
]
},
twitter: {
card: 'summary_large_image',
title: 'MyShop',
description: 'Best coupons and deals from top marketplaces',
images: ['/og-image.png']
},
robots: {
index: true,
follow: true,
'max-image-preview': 'large',
'max-snippet': -1,
'max-video-preview': -1,
}
}
export default function RootLayout({
children,
}: {
children: React.ReactNode
}) {
return (
<html lang="en">
<head>
{/* Additional meta tags */}
<meta charSet="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<meta name="theme-color" content="#FF6B35" />
{/* Preconnect to external domains */}
<link rel="preconnect" href="https://fonts.googleapis.com" />
<link rel="preconnect" href="https://fonts.gstatic.com" crossOrigin="anonymous" />
</head>
<body>{children}</body>
</html>
)
}
2. Dynamic Metadata (Products)
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 · 529 lines · 26 tokens per session scan A fcbe210c4b37
nextjs-seo-optimization is a skill published in the GitHub repository ils15/pantheon-legacy (10 stars, last pushed 7d ago), licensed MIT. It adds 26 tokens to every session and 3,195 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 2026-08-31.
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