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 stareezy-1/frontend-architecture-skill --skill frontend-seogit clone --depth 1 https://github.com/stareezy-1/frontend-architecture-skillWrote 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/stareezy-1/frontend-architecture-skill/frontend-seo)<a href="https://agentmods.dev/skills/stareezy-1/frontend-architecture-skill/frontend-seo"><img src="https://agentmods.dev/badge/skills/stareezy-1/frontend-architecture-skill/frontend-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/stareezy-1/frontend-architecture-skill/frontend-seo"><img src="https://agentmods.dev/badge/skills/stareezy-1/frontend-architecture-skill/frontend-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 | $0.00195 | $0.06050 |
| Opus 5 | $0.00097 | $0.03025 |
| Sonnet 5 | $0.00039 | $0.01210 |
| Haiku 4.5 | $0.00019 | $0.00605 |
Grade A, and why
frontend-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 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.
How it starts
The opening of the file, as written. The whole thing — 697 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Frontend SEO (portable, builder-based)
Portable skill — readable by Claude Code, OpenCode, Codex, Cursor, Windsurf, and others. This skill describes an SEO system — a set of pure builder functions plus a thin framework adapter — not a component library or a visual style. It pairs with the frontend-architecture skill: the SEO system lives in a single service module (
services/seo/) and is consumed through one barrel.
The goal: every route ships correct, consistent, machine-readable metadata without
anyone copy-pasting <meta> tags. Site identity lives in one constants module, URLs are
always absolute and canonical, and search engines get a sitemap, robots rules, an RSS
feed, and typed JSON-LD derived from the same content the app already renders.
0. The five core ideas
- One source of truth for identity. Site URL, name, description, keywords, author, social handles, OG image, and verification tokens live in a single
constants/seomodule. Nothing about the site's identity is hardcoded anywhere else. - URLs are always absolute and canonical. A single
canonicalUrl(path)function turns any path into an absolute, trailing-slash-normalized URL. Every sitemap entry, RSS link, OG URL, and JSON-LD@idflows through it. - Builders are pure; the adapter is thin. Metadata, sitemap, robots, RSS, and JSON-LD are produced by pure functions that take data and return plain objects. Only one small function touches the framework's metadata type. Pure functions are trivially unit-testable.
- Structured data is typed and reused. JSON-LD objects share a
JsonLdtype and a small set ofschema.orgbuilders (Person,WebSite,BlogPosting,CreativeWork,BreadcrumbList,FAQPage). Entities cross-reference each other by stable@id. - Discovery surfaces are generated from content.
sitemap.xml,robots.txt, and the RSS feed are built from the same content collections the app renders — never maintained by hand, never drifting.
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 · 697 lines · 195 tokens per session scan A 3ab49f1e525b
frontend-seo is a skill published in the GitHub repository stareezy-1/frontend-architecture-skill (10 stars, last pushed 2mo ago), licensed MIT. It adds 195 tokens to every session and 6,050 once invoked, about $0.0010 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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