CLAUDE.md for TanStack Query (React Query)
AI fetches data with useEffect + useState. TanStack Query handles caching, deduplication, and refetching. Rules for query keys, staleTime, useMutation, invalidation, and prefetching.
7 min read·Mar 12, 2026
Rule Writing
Master the art of writing CLAUDE.md, .cursorrules, and other AI assistant configuration files.
AI Coding Rules for Zig Teams
AI generates C-style Zig with hidden allocations and ignored error unions. Rules for explicit allocators, error unions, comptime, and Zig's no-hidden-behavior philosophy.
7 min read·Mar 5, 2026
AI Rules for WebAssembly Projects
AI generates Wasm code that leaks memory, has expensive JS-Wasm boundary crossings, and ignores the component model. Rules for safe, performant WebAssembly.
7 min read·Feb 27, 2026
CLAUDE.md for Vercel Deployments
AI generates Docker and PM2 patterns for Vercel. Rules for serverless function limits, Edge vs Node runtime, env vars, preview deployments, and Vercel-optimized Next.js.
7 min read·Feb 18, 2026
CLAUDE.md for Axum (Rust) Web Framework
AI mixes Actix patterns into Axum. Rules for Axum extractors, State for shared data, tower middleware, Router::merge for composition, and IntoResponse for responses.
7 min read·Feb 14, 2026
AI Coding Rules for Lua Teams
AI generates over-engineered Lua by applying patterns from larger languages. Rules for tables, metatables, coroutines, module patterns, and game scripting conventions.
7 min read·Feb 12, 2026
CLAUDE.md for Ionic Projects
AI generates pure web or pure native patterns in Ionic. Rules for Capacitor plugins, Ionic UI components, adaptive styling, platform detection, and hybrid app architecture.
7 min read·Feb 4, 2026
CLAUDE.md for Redux and Zustand
AI generates legacy Redux or misuses Zustand as Redux. Rules for Redux Toolkit slices, Zustand minimal stores, server state with TanStack Query, and when to use each.
7 min read·Jan 30, 2026
AI Coding Rules for Dart and Flutter
AI generates Flutter code with deeply nested widget trees and mismanaged state. Rules for widget extraction, Riverpod/Bloc state management, and Dart conventions.
8 min read·Jan 28, 2026
AI Rules for OCaml and Functional Programming
AI generates imperative-style OCaml that ignores the module system and algebraic types. Rules for type-driven design, pattern matching, functors, and opam conventions.
7 min read·Jan 22, 2026
CLAUDE.md for Fiber (Go) Web Framework
AI generates Express code for Fiber. Rules for fasthttp differences, Fiber ctx, body parsing with BodyParser, route groups, middleware, and Go-native error handling.
7 min read·Jan 9, 2026
CLAUDE.md for Jupyter Notebooks
AI generates notebooks with hidden state, non-linear execution, and unreproducible outputs. Rules for cell ordering, parameterization, and notebook-to-production patterns.
7 min read·Dec 22, 2025
CLAUDE.md for Expo Projects
AI generates bare React Native patterns in Expo. Rules for Expo Router (file-based), EAS Build/Submit, Expo SDK modules, config plugins, and the managed workflow.
7 min read·Dec 15, 2025
CLAUDE.md for Actix Web (Rust)
AI fights Actix Web's ownership model. Rules for web::Data shared state, typed extractors, guard-based routing, custom error responders, and middleware patterns.
7 min read·Dec 8, 2025
AI Coding Rules for Elixir Teams
AI generates OOP-style Elixir instead of idiomatic functional patterns. Rules for GenServers, pattern matching, pipe operators, Phoenix conventions, and OTP design.
8 min read·Dec 3, 2025
CLAUDE.md for Sentry Error Monitoring
AI logs errors to console instead of Sentry. Rules for SDK initialization, error boundaries, breadcrumbs, user/transaction context, performance tracing, and source maps.
7 min read·Dec 1, 2025
AI Rules for Perl and Legacy Code
AI generates ancient Perl patterns and makes legacy code harder to maintain. Rules for use strict/warnings, modern Perl, safe legacy changes, and incremental modernization.
7 min read·Nov 27, 2025
AI Coding Rules for PHP Teams
AI generates legacy PHP patterns from the PHP 5 era. Rules for modern PHP 8.3: enums, readonly classes, match expressions, typed properties, and Laravel conventions.
8 min read·Nov 21, 2025
CLAUDE.md for GraphQL and Apollo
AI generates REST-shaped GraphQL with one query per page. Rules for proper schema design, DataLoader resolvers, codegen for types, Apollo Client cache policies, and fragments.
8 min read·Nov 20, 2025
AI Rules for Ansible Playbooks
AI generates Ansible with raw shell commands instead of modules and ignores idempotency. Rules for proper modules, vault secrets, roles, and idempotent patterns.
7 min read·Nov 13, 2025
CLAUDE.md for Bun Projects
AI generates Node.js patterns in Bun, missing its built-in bundler, test runner, and SQLite. Rules for Bun.serve, bun:test, Bun.build, native SQLite, and bun install.
7 min read·Nov 10, 2025
CLAUDE.md for Gin (Go) Web Framework
AI generates Express-style code in Gin. Rules for Gin-specific middleware, ShouldBind validation, custom error handling, route groups, and proper context usage.
7 min read·Nov 6, 2025
CLAUDE.md for TypeORM
AI mixes TypeORM's Active Record and Data Mapper patterns randomly. Rules for choosing one pattern, repository usage, QueryBuilder, migrations, and eager/lazy relations.
7 min read·Oct 30, 2025
CLAUDE.md for React Native
AI generates web React in React Native — div, className, CSS media queries. Rules for View/Text primitives, StyleSheet, React Navigation, and platform-specific code.
8 min read·Oct 22, 2025
CLAUDE.md for R and Data Science Projects
AI generates base R instead of tidyverse, ignores reproducibility, and creates messy scripts. Rules for tidyverse patterns, renv, R packages, and literate programming.
7 min read·Oct 16, 2025
CLAUDE.md for Auth0 and NextAuth.js
AI builds custom JWT auth when Auth0 and NextAuth.js handle everything. Rules for provider configuration, session callbacks, middleware route protection, and adapter patterns.
7 min read·Oct 9, 2025
AI Coding Rules for Ruby Teams
AI generates Ruby that works but ignores Rails conventions and Ruby idioms. Rules for ActiveRecord patterns, service objects, testing with RSpec, and Rubocop alignment.
8 min read·Oct 8, 2025
CLAUDE.md for Qwik Projects
AI generates hydration patterns in Qwik, defeating resumability. Rules for $ lazy boundaries, useSignal, routeLoader$, actions, and Qwik City conventions.
7 min read·Oct 1, 2025
AI Rules for AWS CloudFormation
AI generates CloudFormation without DeletionPolicy, with overly permissive IAM, and hardcoded values. Rules for parameters, conditions, nested stacks, and safe updates.
7 min read·Sep 29, 2025
CLAUDE.md for .NET and ASP.NET
AI generates .NET Framework MVC in modern .NET 8 projects. Rules for minimal APIs vs controllers, EF Core, DI, middleware pipeline, and top-level statements.
8 min read·Sep 24, 2025
CLAUDE.md for Open Source Projects
Adding a CLAUDE.md to your open source project helps AI-using contributors follow your conventions automatically. Here's how to write one for OSS.
7 min read·Sep 22, 2025
AI Coding Rules for Scala Teams
AI mixes OOP and FP inconsistently in Scala. Rules for functional-first patterns, case classes, immutability, effects systems, and Scala 3 syntax.
8 min read·Sep 15, 2025
CLAUDE.md for tRPC Projects
AI generates REST endpoints in tRPC projects — defeating end-to-end type safety. Rules for procedures, routers, Zod input validation, React Query hooks, and the type-safe client.
7 min read·Sep 10, 2025
AI Rules for PowerShell Scripts
AI generates PowerShell with Bash patterns instead of object pipelines. Rules for cmdlet naming, error handling, pipeline usage, module structure, and PSScriptAnalyzer.
7 min read·Sep 8, 2025
CLAUDE.md for Deno Projects
AI generates Node.js patterns in Deno — require(), npm packages, no permissions. Rules for permission flags, JSR/URL imports, Deno.serve, std library, and deno.json config.
7 min read·Sep 1, 2025
CLAUDE.md for SQLAlchemy
AI generates SQLAlchemy 1.x patterns in 2.0 projects — session.query(), legacy Column, no async. Rules for select(), Mapped types, AsyncSession, and Alembic.
7 min read·Aug 28, 2025
AI Coding Rules for Clojure Teams
AI generates OOP-style Clojure instead of data-oriented patterns. Rules for immutable maps, threading macros, REPL-driven development, and schema validation.
7 min read·Aug 27, 2025
CLAUDE.md for Tauri Apps
AI generates Electron patterns in Tauri — wrong process model, wrong IPC, wrong security. Rules for Tauri commands, capability-based permissions, events, and the Rust backend.
7 min read·Aug 18, 2025
AI Coding Rules for C# Teams
AI generates C# with outdated patterns. Rules for modern C# 12+: records, nullable references, minimal APIs, primary constructors, and proper async patterns.
8 min read·Aug 14, 2025
CLAUDE.md for SolidJS Projects
AI generates React patterns in SolidJS — destructuring props kills reactivity, components re-run, and hooks don't exist. Rules for signals, Show/For, stores, and SolidStart.
7 min read·Aug 11, 2025
CLAUDE.md for Lerna Monorepos
AI generates Lerna 4 patterns that are deprecated. Rules for Lerna 8 with Nx integration, versioning strategies, publishing workflow, changelog generation, and CI configuration.
7 min read·Aug 7, 2025
CLAUDE.md for Stripe Integration
AI handles Stripe payments client-side — a security disaster. Rules for server-side checkout sessions, webhook signature verification, idempotency keys, and PCI-compliant patterns.
8 min read·Aug 4, 2025
CLAUDE.md for C and C++ Projects
AI generates C/C++ with buffer overflows, dangling pointers, and undefined behavior. Rules for smart pointers, RAII, modern C++23, sanitizers, and CMake conventions.
8 min read·Aug 1, 2025
AI Rules for COBOL and Mainframe Code
COBOL still powers global banking. AI generates non-mainframe COBOL. Rules for COBOL-85/2014, copybooks, paragraph structure, CICS, DB2, and JCL conventions.
8 min read·Jul 30, 2025
AI Coding Rules for Kotlin Teams
AI generates Java-style Kotlin instead of idiomatic Kotlin. Rules for data classes, sealed hierarchies, coroutines, extension functions, and Jetpack Compose.
8 min read·Jul 22, 2025
CLAUDE.md for Spring Boot
AI manually configures what Spring Boot auto-configures. Rules for letting auto-config work, Spring Data JPA, Spring Security, @ConfigurationProperties, and actuator.
8 min read·Jul 14, 2025
CLAUDE.md for AWS Amplify
AI generates Amplify Gen 1 CLI patterns in Gen 2 projects. Rules for TypeScript backend definitions, data models, auth configuration, storage rules, and Lambda functions.
7 min read·Jul 1, 2025
CLAUDE.md for Hono Projects
AI generates Node.js-specific Hono instead of Web Standard patterns. Rules for multi-runtime compatibility, Request/Response API, Zod OpenAPI, and middleware patterns.
7 min read·Jun 27, 2025
CLAUDE.md for Cloudflare Workers
AI uses Node.js APIs in Cloudflare Workers — they don't exist. Rules for Web Standard APIs, KV for cache, D1 for SQL, R2 for storage, Durable Objects, and wrangler dev.
8 min read·Jun 23, 2025
AI Rules for MATLAB and Simulink
AI generates slow, unvectorized MATLAB with growing arrays and outdated syntax. Rules for vectorization, preallocation, modern MATLAB features, and Simulink conventions.
7 min read·Jun 19, 2025
CLAUDE.md for Drizzle ORM
AI generates Prisma or raw SQL patterns in Drizzle projects. Rules for schema-as-code in TypeScript, the query builder, relational queries, drizzle-kit, and type inference.
7 min read·Jun 17, 2025
AI Coding Rules for Java Teams
AI generates Java that compiles but uses outdated patterns. Rules for modern Java: records, sealed classes, pattern matching, and proper Stream API usage.
8 min read·Jun 12, 2025
CLAUDE.md for Electron Apps
AI treats Electron like a web app — ignoring the main/renderer process split and security model. Rules for IPC, contextBridge, nodeIntegration: false, and process isolation.
7 min read·Jun 5, 2025
CLAUDE.md for pnpm Workspaces
AI generates npm patterns in pnpm workspaces — phantom dependencies and flat node_modules. Rules for workspace: protocol, strict isolation, catalog, filtering, and lockfile.
7 min read·May 29, 2025
CLAUDE.md for Remix Projects
AI generates React SPA patterns in Remix. Rules for loaders and actions, nested routing, web-standard forms, progressive enhancement, and error boundaries.
7 min read·May 22, 2025
AI Coding Rules for Haskell Teams
AI generates imperative-style Haskell that ignores purity, monads, and algebraic types. Rules for pure functions, IO isolation, type classes, and idiomatic error handling.
8 min read·May 18, 2025
AI Rules for VHDL and Hardware Description Languages
AI generates VHDL that simulates but doesn't synthesize. Rules for synchronous design, clock domain crossings, reset strategies, synthesizable patterns, and testbenches.
7 min read·May 14, 2025
CLAUDE.md for Laravel Projects
AI generates raw PHP patterns in Laravel, ignoring Eloquent, Blade, and artisan. Rules for Eloquent relationships, Form Requests, Livewire, queues, and Laravel conventions.
8 min read·May 8, 2025
AI Coding Rules for Swift Teams
AI generates Swift that compiles but uses class-heavy OOP instead of protocol-oriented patterns. Rules for SwiftUI, value types, async/await, and Apple's API design guidelines.
8 min read·Apr 30, 2025
CLAUDE.md for Firebase Projects
AI treats Firebase as a plain database — no security rules, relational data model. Rules for Firestore document design, security rules, Cloud Functions, Auth, and hosting.
8 min read·Apr 24, 2025
AI Rules for Kubernetes Manifests
AI generates Kubernetes YAML without resource limits, security contexts, or health probes. Rules for production-ready manifests, Helm charts, and K8s security.
8 min read·Apr 23, 2025
CLAUDE.md for Prisma ORM
AI ignores Prisma's type-safe client. Rules for schema.prisma design, relation queries, select for field filtering, transactions, seeding, and migration workflow.
7 min read·Apr 17, 2025
AI Coding Rules for TypeScript Teams
AI assistants generate TypeScript that compiles but uses `any`, skips generics, and ignores your patterns. Rules for strict types, Zod validation, and framework conventions.
8 min read·Apr 16, 2025
CLAUDE.md for Solidity and Web3 Projects
AI-generated Solidity has reentrancy vulnerabilities, unchecked gas costs, and missing access control. Rules for safe patterns, OpenZeppelin, and audit-ready contracts.
8 min read·Apr 11, 2025
CLAUDE.md for AWS Lambda Functions
AI generates Express servers inside Lambda. Rules for event-driven handlers, cold start minimization, connection reuse outside the handler, Lambda layers, and least-privilege IAM.
7 min read·Apr 7, 2025
CLAUDE.md for Ruby on Rails
AI ignores Rails conventions: fat controllers, bypassed ActiveRecord, manual auth. Rules for the Rails Way: skinny controllers, concerns, Turbo, Stimulus, and Hotwire.
8 min read·Apr 3, 2025
CLAUDE.md for Astro Projects
AI generates React SPA patterns in Astro projects, shipping unnecessary JS. Rules for islands architecture, content collections, zero-JS defaults, and Astro integrations.
7 min read·Mar 28, 2025
AI Coding Rules for Rust Teams
AI assistants generate Rust that compiles but fights the borrow checker. Rules for ownership patterns, error handling with thiserror/anyhow, and idiomatic traits.
8 min read·Mar 25, 2025
CLAUDE.md for Nx Monorepos
AI generates manual monorepo patterns in Nx. Rules for Nx generators, affected commands, project graph, task caching, module boundaries, and Nx Cloud for remote cache.
7 min read·Mar 20, 2025
AI Rules for Groovy and Gradle Builds
AI generates Gradle with deprecated APIs and Groovy DSL. Rules for Kotlin DSL, version catalogs, convention plugins, and build cache optimization.
7 min read·Mar 19, 2025
CLAUDE.md for Phoenix (Elixir) Framework
AI generates Rails-style Phoenix instead of LiveView-first patterns. Rules for LiveView components, contexts, Ecto changesets, PubSub for realtime, and BEAM-native patterns.
8 min read·Mar 14, 2025
AI Rules for Dockerfiles and Containers
AI generates Dockerfiles that run as root with 2GB images. Rules for multi-stage builds, non-root users, layer caching, and container security best practices.
7 min read·Mar 7, 2025
CLAUDE.md for Jest and Vitest
AI generates snapshot-heavy, over-mocked Jest tests. Rules for behavior testing, testing-library patterns, mock boundaries, test naming, and Jest vs Vitest configuration.
8 min read·Mar 6, 2025
CLAUDE.md for Supabase Projects
AI builds custom auth, custom storage, and custom realtime on Supabase. Rules for using Supabase Auth, RLS policies, Storage buckets, Realtime subscriptions, and Edge Functions.
8 min read·Feb 21, 2025
CLAUDE.md for Flask Projects
AI generates monolithic Flask apps with everything in one file. Rules for blueprints, application factory pattern, Flask-SQLAlchemy, WTForms, and config management.
7 min read·Feb 13, 2025
CLAUDE.md for Svelte and SvelteKit
AI generates Svelte 4 reactive declarations in Svelte 5 projects. Rules for runes ($state, $derived, $effect), SvelteKit load functions, form actions, and server routes.
8 min read·Feb 6, 2025
AI Coding Rules for Go Teams
Go's conventions are strong but AI assistants still deviate. Rules for error wrapping, interface design, context propagation, and table-driven tests.
8 min read·Jan 30, 2025
CLAUDE.md for Playwright Testing
AI mixes Cypress patterns into Playwright — explicit waits, wrong selectors, no route mocking. Rules for locators, auto-waiting, page object model, route(), and fixtures.
7 min read·Jan 23, 2025
CLAUDE.md for Fastify Projects
AI generates Express patterns in Fastify — missing schema validation, serialization, and the plugin system. Rules for JSON Schema, encapsulation, hooks, and TypeProvider.
7 min read·Jan 16, 2025
CLAUDE.md for Turborepo Monorepos
AI ignores Turborepo's pipeline, caching, and workspace model. Rules for turbo.json task config, internal packages, remote caching, workspace dependencies, and CI optimization.
7 min read·Jan 7, 2025
CLAUDE.md for Angular Projects
AI generates module-based Angular in standalone projects and ignores signals. Rules for standalone components, signals, typed forms, RxJS patterns, and Angular CLI.
8 min read·Jan 3, 2025
CLAUDE.md for Mongoose and MongoDB
AI applies relational patterns to MongoDB — normalizing everything. Rules for document design, embedding vs referencing, Mongoose schemas, indexes, and aggregation pipelines.
8 min read·Dec 23, 2024
AI Rules for Terraform and Infrastructure as Code
AI-generated Terraform can create public S3 buckets, open security groups, and expensive instances. Rules for safe IaC: modules, state management, and cost control.
8 min read·Dec 19, 2024
CLAUDE.md for FastAPI Projects
AI generates Flask-style FastAPI without Pydantic models or type hints. Rules for typed endpoints, dependency injection, async patterns, SQLAlchemy integration, and OpenAPI.
8 min read·Dec 12, 2024
AI Coding Rules for Python Teams
AI assistants generate Python that works but lacks type hints, uses bare exceptions, and ignores your framework patterns. These rules fix the most common issues.
8 min read·Dec 4, 2024
CLAUDE.md for Vue and Nuxt Projects
AI generates Options API and Vue 2 patterns in Vue 3 projects. Rules for Composition API, script setup, composables, Pinia state management, and Nuxt 3 conventions.
8 min read·Nov 25, 2024
CLAUDE.md for Cypress Testing
AI generates fragile Cypress tests. Rules for data-testid selectors, custom commands, cy.intercept for API mocking, page objects, retry-ability, and CI configuration.
7 min read·Nov 14, 2024
CLAUDE.md for Django Projects
AI reinvents Django patterns that already exist — raw SQL instead of ORM, manual auth instead of django.contrib.auth. Rules for models, views, DRF, templates, and testing.
8 min read·Oct 30, 2024
CLAUDE.md for Storybook Projects
AI generates Storybook stories without args or controls. Rules for CSF3 format, args-based stories, play functions for interaction testing, decorators, and autodocs.
7 min read·Oct 3, 2024
CLAUDE.md for NestJS Projects
AI generates Express patterns in NestJS, bypassing modules, DI, and decorators. Rules for NestJS providers, guards, pipes, interceptors, and proper module organization.
8 min read·Sep 18, 2024
CLAUDE.md for GitHub Actions Workflows
AI generates slow, sequential GitHub Actions. Rules for job parallelism, dependency caching, matrix strategies, reusable workflows, concurrency groups, and proper secret handling.
8 min read·Sep 12, 2024
CLAUDE.md for React with Vite
AI mixes Next.js server patterns into React + Vite SPAs. Rules for client-side React: React Router, state management, Vite config, environment variables, and build optimization.
7 min read·Aug 14, 2024
CLAUDE.md for shadcn/ui Projects
AI treats shadcn/ui as a library dependency. It's copied source code you own. Rules for component customization, cn() utility, cva variants, Radix primitives, and theming.
7 min read·Aug 7, 2024
CLAUDE.md for Express.js and Node
Express gives you freedom — AI fills it with inconsistent patterns. Rules for middleware ordering, centralized error handling, Zod validation, and security hardening.
8 min read·Jul 25, 2024
CLAUDE.md for Next.js App Router
AI generates Pages Router Next.js in App Router projects. Rules for React Server Components, server actions, metadata API, streaming, and layout conventions.
8 min read·Jun 20, 2024
CLAUDE.md for Tailwind CSS Projects
AI mixes Tailwind with custom CSS and uses arbitrary values. Rules for utility-first discipline, design scale, responsive prefixes, dark mode, and component extraction patterns.
7 min read·Jun 3, 2024
CLAUDE.md for Next.js Pages Router
Not every Next.js app has migrated to App Router. Rules for Pages Router: getServerSideProps, getStaticProps, ISR, API routes in pages/api/, and _app/_document patterns.
7 min read·May 9, 2024
CLAUDE.md Examples and Templates for Every Stack
Stop staring at a blank file. Grab a copy-paste-ready CLAUDE.md template for your stack — Next.js, Python, Go, or a universal starter — and customize it in minutes.
9 min read·Apr 22, 2024