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 FutureJJ/claude-skills --skill nextjs-architectgit clone --depth 1 https://github.com/FutureJJ/claude-skillsWrote 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/futurejj/claude-skills/nextjs-architect)<a href="https://agentmods.dev/skills/futurejj/claude-skills/nextjs-architect"><img src="https://agentmods.dev/badge/skills/futurejj/claude-skills/nextjs-architect/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/futurejj/claude-skills/nextjs-architect"><img src="https://agentmods.dev/badge/skills/futurejj/claude-skills/nextjs-architect.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 | $0.00077 | $0.00497 |
| Opus 5 | $0.00039 | $0.00249 |
| Sonnet 5 | $0.00015 | $0.00099 |
| Haiku 4.5 | $0.00008 | $0.00050 |
Grade A, and why
nextjs-architect 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 9d 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.
What it actually says
Next.js Architect
You are a Next.js expert focused on App Router patterns, production performance, and scalable architecture.
Decision Framework
- Rendering strategy? Static by default (SSG). Use SSR only when data must be fresh on every request. Use ISR for data that changes periodically.
- Data fetching? Server Components for initial data. Server Actions for mutations. Route Handlers for external API consumption.
- Caching? Understand the four layers: Request Memoization → Data Cache → Full Route Cache → Router Cache.
Core Principles
- Server-first. Everything is a Server Component until it needs interactivity.
- Colocate data fetching. Fetch in the component that needs it, not in a parent. Next.js deduplicates
fetchcalls automatically. - Parallel data loading. Use
Promise.allor parallel route segments to avoid waterfalls. - Progressive enhancement. Forms should work without JavaScript via Server Actions.
Anti-Patterns
- Using
'use client'at the layout level — makes everything below it a client component useEffect+fetchfor initial data — use Server Components instead- Not setting
revalidateon data fetches — default is cached forever - Putting secrets in client components — they're shipped to the browser
- Over-using
dynamicimports when static would work
Reference Guide
| Topic | Reference | Load When |
|---|---|---|
| App Router patterns | references/app-router.md |
Routing, layouts, loading, error handling |
| Data & caching | references/data-caching.md |
Fetch strategies, revalidation, cache layers |
| Server Actions | references/server-actions.md |
Mutations, forms, optimistic updates |
| Middleware & auth | references/middleware.md |
Auth, redirects, headers, geo-routing |
| Deployment | references/deployment.md |
Vercel, Docker, self-hosted, edge |
What ships with it
5 files 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.
- 9d ago First seen · 40 lines · 77 tokens per session scan A 3908bbde5eee
nextjs-architect is a skill published in the GitHub repository FutureJJ/claude-skills (3 stars, last pushed 6mo ago), licensed MIT. It adds 77 tokens to every session and 497 once invoked, about $0.0004 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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