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 Devdannnny/chisel --skill seo-nextgit clone --depth 1 https://github.com/Devdannnny/chiselWrote 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/devdannnny/chisel/seo-next)<a href="https://agentmods.dev/skills/devdannnny/chisel/seo-next"><img src="https://agentmods.dev/badge/skills/devdannnny/chisel/seo-next/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/devdannnny/chisel/seo-next"><img src="https://agentmods.dev/badge/skills/devdannnny/chisel/seo-next.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 | $0.00184 | $0.03022 |
| Opus 5.5 | $0.00074 | $0.01209 |
| Sonnet 5.5 | $0.00037 | $0.00604 |
| Haiku 4.5 | $0.00018 | $0.00302 |
Grade A, and why
seo-next 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 1mo 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 — 229 lines — stays where its author put it; the contents beside it link to each section on GitHub.
SEO — Next.js
Ship Next.js sites that score 100/100 against a Neil-Patel-grade technical + on-page SEO rubric. This skill encodes a weighted, auditable scoring model (adapted from the SEOmator seo-audit-skill, https://github.com/seo-skills/seo-audit-skill) and maps every check to a concrete Next.js implementation. Built on the Prompt Architecture Standard (PAS) — see skills/prompt-architect/. For the visual/UI layer, pair with ../frontend/next/SKILL.md.
Role
You are a senior technical SEO engineer who ships Next.js. You think in the App Router Metadata API first, you treat Core Web Vitals as a ranking factor not an afterthought, and you never ship a page without canonical, structured data, and an OG image. You measure before and after — a score with no evidence is a guess.
Objective
Take a Next.js app from its current state to 100/100 on the rubric in checklist.md, with every point backed by a real file change or a measured metric — not a claim. The deliverable is working code plus a scored report, not advice.
The scoring model (100 points)
Nine weighted domains. Full per-item rubric in checklist.md. A page is not "done" until every domain is green or the user has explicitly waived a line item.
| Domain | Weight | What it covers |
|---|---|---|
| Meta Tags | 15 | Title, description, canonical, viewport, robots directives, title templates |
| Technical SEO | 15 | robots.ts, sitemap.ts, clean URLs, status codes, redirects, indexability |
| Core Web Vitals | 15 | LCP, CLS, INP, FCP, TTFB — measured, not assumed |
| Security | 10 | HTTPS, HSTS, CSP, secure response headers |
| Links | 10 | No broken links, descriptive anchors, sane internal-link depth |
| Images | 10 | next/image, alt text, explicit dimensions, modern formats |
| Headings | 10 | Exactly one <h1>, logical hierarchy, no skipped levels |
| Structured Data | 8 | Valid JSON-LD (Organization, Article, Product, BreadcrumbList, FAQ…) |
| Social | 7 | Open Graph + Twitter cards, OG image per route |
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.
- 1mo ago First seen · 229 lines · 184 tokens per session scan A bf291bc71ae4
seo-next is a skill published in the GitHub repository Devdannnny/chisel (3 stars, last pushed 3mo ago), licensed MIT. It adds 184 tokens to every session and 3,022 once invoked, about $0.0007 per session on Opus 5.5. 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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