nextjs-standards

nextjs-standards is a skill for Claude Code, Codex from J-StaR-Films-Studios/VibeCode-Protocol-Suite. It costs 31 tokens per session (1,213 once invoked), scanned A, original, ISC.

A set of coding rules, checking steps, and templates for Next.js App Router projects. It loads automatically when a Next.js project is detected.

In plain words
What is it for?
Use it when building or reviewing pages and features in Next.js App Router projects.
Why use it?
It gives the project a consistent way to structure code and verify changes, reducing avoidable mistakes in Next.js applications.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it when building or reviewing pages and features in Next.js App Router projects.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/j-star-films-studios/vibecode-protocol-suite/nextjs-standards
Install

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.

Any agent
npx skills add J-StaR-Films-Studios/VibeCode-Protocol-Suite --skill nextjs-standards
Clone the repo
git clone --depth 1 https://github.com/J-StaR-Films-Studios/VibeCode-Protocol-Suite

Made for: Claude Code, Codex.

Wrote 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.

agentmods badge for nextjs-standards

README.md
[![agentmods](https://agentmods.dev/badge/skills/j-star-films-studios/vibecode-protocol-suite/nextjs-standards/github.svg)](https://agentmods.dev/skills/j-star-films-studios/vibecode-protocol-suite/nextjs-standards)
Your own site
<a href="https://agentmods.dev/skills/j-star-films-studios/vibecode-protocol-suite/nextjs-standards"><img src="https://agentmods.dev/badge/skills/j-star-films-studios/vibecode-protocol-suite/nextjs-standards/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.

agentmods 80×15 button for nextjs-standards

Your own site · 80×15
<a href="https://agentmods.dev/skills/j-star-films-studios/vibecode-protocol-suite/nextjs-standards"><img src="https://agentmods.dev/badge/skills/j-star-films-studios/vibecode-protocol-suite/nextjs-standards.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 31 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,213 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 2 findings, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium MCP Rug Pull · line 24
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 177
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00031 $0.01213
Opus 5 $0.00015 $0.00607
Sonnet 5 $0.00006 $0.00243
Haiku 4.5 $0.00003 $0.00121

Measured 8d ago against content hash a8ed653e34d5, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

nextjs-standards 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 8d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/vibe-verify.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

assets/.agent/skills/web-dev-standards/nextjs-standards/SKILL.md · 195 lines

How it starts

The opening of the file, as written. The whole thing — 195 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Next.js Coding Standards Skill

Auto-Load Trigger: Presence of next.config.* or "next" in package.json

When to Use

  • Starting a new Next.js project
  • Before any TypeScript/React file edit
  • When context seems lost mid-session
  • After /agent_reset or /vibe-primeAgent

🛑 Verification Protocol (MANDATORY)

After Every TypeScript/TSX File Edit

npx tsc --noEmit

If this fails:

  1. DO NOT proceed to next file
  2. Fix the type error immediately
  3. Re-run until it passes
  4. Only then continue

Before Any Handoff

python scripts/vibe-verify.py

All checks must pass before claiming "done."


The Blueprint & Build Protocol

Phase 1: Blueprint (Before Coding)

  1. Check docs/features/ for existing patterns
  2. Create/update docs/features/FeatureName.md
  3. Wait for approval before coding

Phase 2: Build (Implementation)

  1. Announce which FR-XXX you're implementing
  2. Reference the corresponding issue in docs/issues/
  3. Implement one step at a time
  4. tsc --noEmit after every file
  5. Mark acceptance criteria as complete

Phase 3: Finalization

  1. Run full verification (vibe-verify.py)
  2. Update issue file with completion status
  3. Generate handoff summary

Full-Stack Type Safety

The AI reliability secret: TypeScript tells you when you broke something.

Core Principle

If you change the backend, the frontend MUST type-check. If type-check fails:

  • The change broke something
  • Fix it before moving on
  • Never ignore type errors

Stack Alignment

  • Server Components fetch data → types flow to client
  • API routes return typed responses → frontend consumes them
  • Prisma schema changes → regenerate client → type-check

Next.js App Router Rules

  1. Server Components Default — No 'use client' unless required
  2. Client Components Sparingly — Only for interactivity, hooks, browser APIs
  3. Data Fetching — In async Server Components, not useEffect
  4. Route Handlers — All API in app/api/.../route.ts
  5. Caching — Be explicit: { cache: 'no-store' } or revalidate = N

Read the full file on GitHub · 195 lines

Files

What ships with it

3 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.

Changes

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.

  1. 8d ago First seen · 195 lines · 31 tokens per session scan A a8ed653e34d5

Subscribe to this mod's changes

nextjs-standards is a skill published in the GitHub repository J-StaR-Films-Studios/VibeCode-Protocol-Suite (24 stars, last pushed yesterday), licensed ISC. It adds 31 tokens to every session and 1,213 once invoked, about $0.0002 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 2026-09-03.

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