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CULT OF CLAUDE

Not affiliated with Anthropic. An independent community resource.

CLAUDE.md Gallery

18 real CLAUDE.md files from production repositories and curated templates. See how the best teams configure Claude Code.

From Real Repos

CLAUDE.md
1 ---
2 title: "Vercel AI SDK"
3 use_case: Monorepo
4 stack: [TypeScript, Next.js, Turborepo]
5 repo: vercel/ai
6 ---
7 # Vercel AI SDK
Monorepo vercel/ai

Vercel AI SDK

The gold standard.

~300 lines. Exhaustive architecture docs, testing patterns, contribution guidelines.

TypeScriptNext.jsTurborepo
CLAUDE.md
1 ---
2 title: "Pydantic AI"
3 use_case: Open Source
4 stack: [Python, Pydantic, pytest]
5 repo: pydantic/pydantic-ai
6 ---
7 # Pydantic AI
Open Source pydantic/pydantic-ai

Pydantic AI

Personality as convention.

"Channel your inner Samuel Colvin." Philosophy-first approach.

PythonPydanticpytest
CLAUDE.md
1 ---
2 title: "Dan Abramov's overreacted.io"
3 use_case: Solo Dev
4 stack: [Next.js, MDX]
5 repo: gaearon/overreacted.io
6 ---
7 # Dan Abramov's overreacted.io
Solo Dev gaearon/overreacted.io

Dan Abramov's overreacted.io

Voice preservation.

Preserves distinctive writing voice for content generation.

Next.jsMDX
CLAUDE.md
1 ---
2 title: "Cloudflare workers-sdk"
3 use_case: Monorepo
4 stack: [TypeScript, Turborepo, Vitest]
5 repo: cloudflare/workers-sdk
6 ---
7 # Cloudflare workers-sdk
Monorepo cloudflare/workers-sdk

Cloudflare workers-sdk

Pioneered the pointer pattern.

Pointer pattern -- root links to package-level files. Scales massively.

TypeScriptTurborepoVitest
CLAUDE.md
1 ---
2 title: "Vercel next-devtools-mcp"
3 use_case: Open Source
4 stack: [TypeScript, Next.js, MCP SDK]
5 repo: vercel/next-devtools-mcp
6 ---
7 # Vercel next-devtools-mcp
Open Source vercel/next-devtools-mcp

Vercel next-devtools-mcp

Best MCP server CLAUDE.md.

Bridges MCP protocol patterns with Next.js integration layer.

TypeScriptNext.jsMCP SDK
CLAUDE.md
1 ---
2 title: "Anthropic Quickstarts"
3 use_case: Multi-Project
4 stack: [TypeScript, Python, Various]
5 repo: anthropics/anthropic-quickstarts
6 ---
7 # Anthropic Quickstarts
Multi-Project anthropics/anthropic-quickstarts

Anthropic Quickstarts

Anthropic's own dogfooding.

From Anthropic themselves. Multi-project, multi-language conventions.

TypeScriptPythonVarious
CLAUDE.md
1 ---
2 title: "MCP TypeScript SDK"
3 use_case: Open Source
4 stack: [TypeScript, Node.js, Jest]
5 repo: modelcontextprotocol/typescript-sdk
6 ---
7 # MCP TypeScript SDK
Open Source modelcontextprotocol/typescript-sdk

MCP TypeScript SDK

Code examples over prose.

JSDoc-style code snippets showing canonical usage patterns.

TypeScriptNode.jsJest
CLAUDE.md
1 ---
2 title: "MCP Python SDK"
3 use_case: Open Source
4 stack: [Python, pytest, uv]
5 repo: modelcontextprotocol/python-sdk
6 ---
7 # MCP Python SDK
Open Source modelcontextprotocol/python-sdk

MCP Python SDK

Test-driven benchmark.

100% test coverage requirement with specific pytest patterns.

PythonpytestuvPydantic
CLAUDE.md
1 ---
2 title: "HumanLayer"
3 use_case: Open Source
4 stack: [Python, FastAPI, TypeScript]
5 repo: humanlayer/humanlayer
6 ---
7 # HumanLayer
Open Source humanlayer/humanlayer

HumanLayer

Conciseness benchmark.

~60 lines. Every line carries specific, actionable information.

PythonFastAPITypeScript
CLAUDE.md
1 ---
2 title: "Supabase JS"
3 use_case: Monorepo
4 stack: [TypeScript, Deno, npm]
5 repo: supabase/supabase-js
6 ---
7 # Supabase JS
Monorepo supabase/supabase-js

Supabase JS

Transitional state docs.

Documents active migrations and transitional states honestly.

TypeScriptDenonpmTurborepo

Templates by Stack

CLAUDE.md
1 ---
2 title: "TypeScript Fullstack (Template)"
3 use_case: Team
4 stack: [TypeScript, Next.js, Prisma]
5 ---
6 # TypeScript Fullstack (Template)
Team

TypeScript Fullstack (Template)

Complete team template.

Next.js 14 app router with Prisma ORM. Strict TypeScript, no any.

TypeScriptNext.jsPrisma
CLAUDE.md
1 ---
2 title: "Python ML Project (Template)"
3 use_case: Solo Dev
4 stack: [Python, PyTorch, FastAPI]
5 ---
6 # Python ML Project (Template)
Solo Dev

Python ML Project (Template)

ML project template.

ML pipeline with FastAPI serving. Reproducibility is paramount.

PythonPyTorchFastAPIpandas
CLAUDE.md
1 ---
2 title: "Rust CLI Tool (Template)"
3 use_case: Open Source
4 stack: [Rust, clap, tokio]
5 ---
6 # Rust CLI Tool (Template)
Open Source

Rust CLI Tool (Template)

Rust project template.

CLI tool with async I/O. Safety and ergonomics first.

Rustclaptokioserde
CLAUDE.md
1 ---
2 title: "Go Microservice (Template)"
3 use_case: Team
4 stack: [Go, Chi, PostgreSQL]
5 ---
6 # Go Microservice (Template)
Team

Go Microservice (Template)

Go project template.

HTTP/gRPC service with PostgreSQL. Standard Go project layout.

GoChiPostgreSQLgRPC
CLAUDE.md
1 ---
2 title: "React Component Library (Template)"
3 use_case: Open Source
4 stack: [TypeScript, React, Storybook]
5 ---
6 # React Component Library (Template)
Open Source

React Component Library (Template)

Open source template.

Accessible component library. WCAG 2.1 AA required.

TypeScriptReactStorybookRollup
CLAUDE.md
1 ---
2 title: "Startup Monorepo (Template)"
3 use_case: Monorepo
4 stack: [TypeScript, Next.js, tRPC]
5 ---
6 # Startup Monorepo (Template)
Monorepo

Startup Monorepo (Template)

Solo startup template.

Full-stack startup. One engineer. Correctness over velocity.

TypeScriptNext.jstRPCTurborepo
CLAUDE.md
1 ---
2 title: "Swift iOS App (Template)"
3 use_case: Solo Dev
4 stack: [Swift, SwiftUI, Core Data]
5 ---
6 # Swift iOS App (Template)
Solo Dev

Swift iOS App (Template)

iOS project template.

SwiftUI app with Core Data persistence. Ship weekly.

SwiftSwiftUICore DataCombine
CLAUDE.md
1 ---
2 title: "Node.js API (Template)"
3 use_case: Team
4 stack: [TypeScript, Fastify, Prisma]
5 ---
6 # Node.js API (Template)
Team

Node.js API (Template)

API project template.

Fastify REST API with Prisma and Redis caching.

TypeScriptFastifyPrismaRedis