Cursor rules for Next

Cursor rules for Next is a skill for Claude Code, Codex from AmariahAK/atlarix-skills. It costs 4 tokens per session (1,942 once invoked), scanned A, original, Apache-2.0.

Coding guidance for Next.js App Router applications that use TanStack Query v5, a library for fetching and updating data in React interfaces. It explains how server-rendered data, client-side fetching, Server Actions, and optimistic updates work together.

In plain words
What is it for?
Use it when building Next.js applications with interactive data, mutations, polling, or optimistic user interfaces. It covers the HydrationBoundary pattern for passing server-fetched data into the browser safely.
Why use it?
It helps avoid duplicated data-fetching logic, slow first loads, and inconsistent screens while data is being updated.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: mentions Cursor.

Needs its repository: it reads a path above its own folder, which exists only inside the repository. The line is import { createPost } from '../actions'.

Good fit Use it when building Next.js applications with interactive data, mutations, polling, or optimistic user interfaces. It covers the HydrationBoundary pattern for passing server-fetched data into the browser safely.

Compare 6 skills from other repositories ↓
Install

Getting it into your agent

It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.

Clone the repo
git clone --depth 1 https://github.com/AmariahAK/atlarix-skills
agentmods
npx agentmods add skills/amariahak/atlarix-skills/acr-nextjs-tanstack-query-cursorrules-prompt-file

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 Cursor rules for Next

README.md
[![agentmods](https://agentmods.dev/badge/skills/amariahak/atlarix-skills/acr-nextjs-tanstack-query-cursorrules-prompt-file/github.svg)](https://agentmods.dev/skills/amariahak/atlarix-skills/acr-nextjs-tanstack-query-cursorrules-prompt-file)
Your own site
<a href="https://agentmods.dev/skills/amariahak/atlarix-skills/acr-nextjs-tanstack-query-cursorrules-prompt-file"><img src="https://agentmods.dev/badge/skills/amariahak/atlarix-skills/acr-nextjs-tanstack-query-cursorrules-prompt-file/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 Cursor rules for Next

Your own site · 80×15
<a href="https://agentmods.dev/skills/amariahak/atlarix-skills/acr-nextjs-tanstack-query-cursorrules-prompt-file"><img src="https://agentmods.dev/badge/skills/amariahak/atlarix-skills/acr-nextjs-tanstack-query-cursorrules-prompt-file.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 4 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,942 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.
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 $0.00004 $0.01942
Opus 5 $0.00002 $0.00971
Sonnet 5 $0.00001 $0.00388
Haiku 4.5 $0.00000 $0.00194

Measured 8d ago against content hash 0199a06c293a, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

Cursor rules for 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 8d 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.

skills/acr-nextjs-tanstack-query-cursorrules-prompt-file/SKILL.md · 245 lines

How it starts

The opening of the file, as written. The whole thing — 245 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Cursor rules for Next

When to use this skill

Cursor rules for Next.js App Router with TanStack Query v5, covering the HydrationBoundary pattern, Server Actions as mutations, and optimistic updates.

Source

Synced from https://github.com/PatrickJS/awesome-cursorrules/tree/main/rules/nextjs-tanstack-query-cursorrules-prompt-file.mdc.

You are an expert in Next.js (App Router), TanStack Query v5, TypeScript, and combining server components with client-side data fetching.

Next.js App Router + TanStack Query v5 Guidelines

Architecture Philosophy

  • Server Components fetch data directly (no TanStack Query needed there)
  • TanStack Query lives in Client Components for interactive, real-time, or user-triggered data
  • Use React Server Components for initial page data; TanStack Query for mutations, polling, and optimistic updates
  • Hydrate the Query cache from server to avoid client waterfalls on first load

Provider Setup with Hydration

// src/providers/query-provider.tsx
'use client'
import { QueryClient, QueryClientProvider } from '@tanstack/react-query'
import { ReactQueryDevtools } from '@tanstack/react-query-devtools'
import { useState } from 'react'

export function QueryProvider({ children }: { children: React.ReactNode }) {
  const [queryClient] = useState(
    () =>
      new QueryClient({
        defaultOptions: {
          queries: {
            staleTime: 60 * 1000,
            retry: (count, error: any) => error?.status !== 404 && count < 2,
          },
        },
      }),
  )

  return (
    <QueryClientProvider client={queryClient}>
      {children}
      <ReactQueryDevtools initialIsOpen={false} />
    </QueryClientProvider>
  )
}

// src/app/layout.tsx
import { QueryProvider } from '@/providers/query-provider'

export default function RootLayout({ children }: { children: React.ReactNode }) {
  return (
    <html>
      <body>
        <QueryProvider>{children}</QueryProvider>
      </body>
    </html>
  )
}

Hydration Pattern (Server → Client Cache)

  • Prefetch in Server Components, dehydrate state, rehydrate in client
  • This eliminates client-side loading states on first render
// src/app/posts/page.tsx (Server Component)
import { dehydrate, HydrationBoundary, QueryClient } from '@tanstack/react-query'
import { postsQueryOptions } from '@/queries/posts'
import { PostsList } from './_components/posts-list'

export default async function PostsPage() {
  const queryClient = new QueryClient()
  await queryClient.prefetchQuery(postsQueryOptions())

  return (
    <HydrationBoundary state={dehydrate(queryClient)}>
      <PostsList />
    </HydrationBoundary>
  )
}

// src/app/posts/_components/posts-list.tsx
'use client'
import { useQuery } from '@tanstack/react-query'
import { postsQueryOptions } from '@/queries/posts'

export function PostsList() {
  // Reads from pre-populated cache — no loading spinner
  const { data: posts } = useQuery(postsQueryOptions())
  return <ul>{posts?.map(p => <li key={p.id}>{p.title}</li>)}</ul>
}

Read the full file on GitHub · 245 lines

Files

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.

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 · 245 lines · 4 tokens per session scan A 0199a06c293a

Subscribe to this mod's changes

Cursor rules for Next is a skill published in the GitHub repository AmariahAK/atlarix-skills (2 stars, last pushed 5d ago), licensed Apache-2.0. It adds 4 tokens to every session and 1,942 once invoked, about $0.0000 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.