008-nextjs-patterns

008-nextjs-patterns is a cursor rule for Cursor from passionmuse16/food-tracker. It costs 150 tokens per session, scanned A, original, MIT.

A set of rules for building Next.js applications, covering URL query state, server rendering, client components, data fetching, routing, and performance. Next.js is a React framework for web applications.

In plain words
What is it for?
Use it when designing or reviewing Next.js pages, choosing between server and client components, managing URL search parameters, fetching data, adding Suspense fallbacks, or loading non-critical code dynamically.
Why use it?
It helps keep more work on the server, limit browser-side code, and avoid common performance problems. It also recommends consistent handling of URL parameters and loading states.

Cursor rule for Cursor

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.

agentmods
npx agentmods add rules/passionmuse16/food-tracker/008-nextjs-patterns
Clone the repo
git clone --depth 1 https://github.com/passionmuse16/food-tracker

Made for: Cursor.

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 008-nextjs-patterns

README.md
[![agentmods](https://agentmods.dev/badge/rules/passionmuse16/food-tracker/008-nextjs-patterns.svg)](https://agentmods.dev/rules/passionmuse16/food-tracker/008-nextjs-patterns)
Your own site
<a href="https://agentmods.dev/rules/passionmuse16/food-tracker/008-nextjs-patterns"><img src="https://agentmods.dev/badge/rules/passionmuse16/food-tracker/008-nextjs-patterns.svg" alt="Measured on agentmods" height="20"></a>
Per session 150 This file is loaded in full into every session.
When invoked 150 The same file — it is already loaded in full.
Security scan A 0 findings. Scan, not verified.
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 $0.00150 $0.00150
Opus 5 $0.00075 $0.00075
Sonnet 5 $0.00030 $0.00030
Haiku 4.5 $0.00015 $0.00015

Measured 4d ago against content hash d276a58b5b30, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

008-nextjs-patterns 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 4d 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.

.cursor/rules/008-nextjs-patterns.mdc · 26 lines

What it actually says

Next.js Patterns

Key Conventions

  • Use 'nuqs' for URL search parameter state management.
  • Optimize Web Vitals (LCP, CLS, FID).
  • Follow Next.js docs for Data Fetching, Rendering, and Routing.

Client Component Usage

Limit 'use client':

  • Favor server components and Next.js SSR.
  • Use only for Web API access in small components.
  • Avoid for data fetching or state management.

Performance Guidelines

  • Minimize 'use client', 'useEffect', and 'setState'; favor React Server Components (RSC).
  • Wrap client components in Suspense with fallback.
  • Use dynamic loading for non-critical components.
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. 4d ago First seen · 26 lines · 150 tokens per session scan A d276a58b5b30

Subscribe to this mod's changes

008-nextjs-patterns is a cursor rule published in the GitHub repository passionmuse16/food-tracker (2 stars, last pushed 10mo ago), licensed MIT. It adds 150 tokens to every session, about $0.0007 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.