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Claude Code (CLAUDE.md) rules

AWS CDK (TypeScript) CLAUDE.md

CLAUDE.md for AWS CDK v2 apps in TypeScript: constructs, least-privilege grants, snapshot tests, and safe deploys.

Claude Code (CLAUDE.md)AWS CDK

Bun runtime CLAUDE.md

CLAUDE.md for TypeScript projects on Bun 1.2+: bun test, Bun.serve, built-in SQLite/Postgres, and bundling.

Claude Code (CLAUDE.md)Bun

Claude Agent SDK CLAUDE.md

CLAUDE.md for building agents with the Claude Agent SDK (Python/TypeScript): options, tools, permissions, and hooks.

Claude Code (CLAUDE.md)LLM apps & agents

Code reviewer subagent (Claude Code)

A Claude Code subagent definition that reviews the current diff for bugs, security, and tests, reporting by severity.

Claude Code (CLAUDE.md)Agent workflows

/commit slash command (Claude Code)

A Claude Code /commit slash command that reviews staged changes and writes a Conventional Commits message.

Claude Code (CLAUDE.md)Agent workflows

Debugger subagent (Claude Code)

A Claude Code subagent for root-cause analysis of errors, crashes, and failing behavior, with a verified minimal fix.

Claude Code (CLAUDE.md)Agent workflows

Systematic debugging CLAUDE.md

CLAUDE.md workflow for debugging with Claude Code: reproduce, isolate, hypothesize, verify, and avoid guess-fixes.

Claude Code (CLAUDE.md)Agent workflows

Django CLAUDE.md

CLAUDE.md for Django 5 projects with DRF, pytest-django and PostgreSQL.

Claude Code (CLAUDE.md)Django

Elixir Phoenix CLAUDE.md

CLAUDE.md for Phoenix 1.8 + LiveView 1.x apps in Elixir: contexts, Ecto changesets, and ExUnit tests.

Claude Code (CLAUDE.md)Elixir / Phoenix

ESP32 ESP-IDF firmware CLAUDE.md

CLAUDE.md for ESP32 firmware on ESP-IDF 5.x in C: components, FreeRTOS tasks, error handling, and logging.

Claude Code (CLAUDE.md)Embedded / firmware

/fix-issue slash command (Claude Code)

A Claude Code /fix-issue command that reads a GitHub issue, reproduces it with a test, fixes it, and reports back.

Claude Code (CLAUDE.md)Agent workflows

Go backend CLAUDE.md

CLAUDE.md for idiomatic Go HTTP services using the standard library, sqlc and table-driven tests.

Claude Code (CLAUDE.md)Go

Kotlin Multiplatform + Compose Multiplatform CLAUDE.md

CLAUDE.md for Kotlin Multiplatform apps sharing UI with Compose Multiplatform across Android, iOS, desktop, and web.

Claude Code (CLAUDE.md)Kotlin Multiplatform

Kubernetes & Helm CLAUDE.md

CLAUDE.md for Kubernetes manifests and Helm 3 charts: resources, probes, security context, and safe rollouts.

Claude Code (CLAUDE.md)Kubernetes / Helm

MCP server (Python) CLAUDE.md

CLAUDE.md for building Model Context Protocol servers in Python with the official SDK (FastMCP), tools, and tests.

Claude Code (CLAUDE.md)MCP servers

Neon serverless Postgres CLAUDE.md

CLAUDE.md for apps on Neon serverless Postgres: pooled connections, the serverless driver, branches, and migrations.

Claude Code (CLAUDE.md)Neon Postgres

NestJS CLAUDE.md

CLAUDE.md for NestJS 11 APIs in TypeScript: modules, DTO validation, providers, and e2e tests.

Claude Code (CLAUDE.md)NestJS

Next.js CLAUDE.md

A CLAUDE.md for Claude Code working in a Next.js + Prisma + Tailwind codebase.

Claude Code (CLAUDE.md)Next.js

/plan slash command (Claude Code)

A Claude Code /plan command that researches the codebase and writes an implementation plan before any code changes.

Claude Code (CLAUDE.md)Agent workflows

/pr-description slash command (Claude Code)

A Claude Code /pr-description command that drafts a pull request title and body from the branch diff, without pushing.

Claude Code (CLAUDE.md)Agent workflows

pytest testing CLAUDE.md

CLAUDE.md for Python test suites with pytest 8: fixtures, parametrize, mocking boundaries, and coverage.

Claude Code (CLAUDE.md)Testing

Python data & ML CLAUDE.md

CLAUDE.md for data science / ML repos using pandas or polars, notebooks, and reproducible pipelines.

Claude Code (CLAUDE.md)Python Data & ML

PyTorch training CLAUDE.md

CLAUDE.md for PyTorch 2.x model training repos: reproducible configs, data loaders, mixed precision, and checkpoints.

Claude Code (CLAUDE.md)Python Data & ML

RAG pipeline CLAUDE.md

CLAUDE.md for retrieval-augmented generation apps: chunking, embeddings, hybrid search, citations, and RAG evals.

Claude Code (CLAUDE.md)RAG & vector databases

Rust CLI CLAUDE.md

CLAUDE.md for Rust command-line tools built with clap, anyhow and thiserror.

Claude Code (CLAUDE.md)Rust

Security auditor subagent (Claude Code)

A read-only Claude Code subagent that audits changes or a module for common web security vulnerabilities.

Claude Code (CLAUDE.md)Security

Solidity smart contract security CLAUDE.md

CLAUDE.md for reviewing and writing Solidity contracts safely: threat checklist, Foundry tests, and no-deploy rules.

Claude Code (CLAUDE.md)Solidity / smart contracts

SwiftUI iOS app CLAUDE.md

CLAUDE.md for SwiftUI apps on iOS 18+ with Swift 6 strict concurrency, @Observable, SwiftData, and Swift Testing.

Claude Code (CLAUDE.md)Swift / SwiftUI

Test-driven development workflow CLAUDE.md

CLAUDE.md workflow that makes Claude Code work test-first: red, green, refactor, with small verified steps.

Claude Code (CLAUDE.md)Agent workflows

Test runner subagent (Claude Code)

A Claude Code subagent that runs the right tests for a change, diagnoses failures, and proposes minimal fixes.

Claude Code (CLAUDE.md)Testing

Unreal Engine C++ CLAUDE.md

CLAUDE.md for Unreal Engine 5 C++ gameplay code: UPROPERTY rules, GC safety, and Blueprint exposure.

Claude Code (CLAUDE.md)Unreal Engine (C++)

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