Claude Md Template Kit
Claude.md Template Kit
Production-grade
CLAUDE.mdfiles for Claude Code projects. Stop getting generic AI suggestions — give Claude the deep context it needs for your stack.
Why CLAUDE.md?
Claude Code is powerful. But without project-level context, it generates generic code that doesn't match your architecture, conventions, or best practices. CLAUDE.md fixes that — it gives Claude persistent, project-specific instructions that transform output quality.
The problem: writing a good CLAUDE.md is hard. You need deep framework expertise, an understanding of what Claude responds to, and hours of iteration to cover architecture, error handling, security, testing, and performance.
We did that work for you.
Each file in this collection is:
- 100-200 lines of opinionated, production-tested instructions
- Covering architecture, typing, error handling, security, testing, and performance
- Written as direct instructions to Claude ("Always use...", "Never...", "Prefer...")
- Based on real production patterns, not documentation copy-paste
- Framework-specific best practices that make Claude write code like a senior engineer
Free Starter Pack (3 files — included in this repo)
Try before you buy. These 3 files are included right here:
| Framework | File | Focus Areas |
|---|---|---|
| Next.js 14+ | free-starter-pack/nextjs.claude.md |
App Router, RSC, Server Actions, caching, metadata |
| React 18+ | free-starter-pack/react.claude.md |
Hooks, state management, React Query, testing, a11y |
| TypeScript / Node.js | free-starter-pack/typescript-node.claude.md |
ESM, Result pattern, Zod, Prisma/Drizzle, async |
# Quick start
cp free-starter-pack/nextjs.claude.md /your-project/CLAUDE.md
That's it. Open Claude Code in your project — the instructions are automatically applied to every response.
Premium Packs (via Polar.sh)
Love the free files? The premium packs cover 7 more frameworks with the same depth and quality.
Framework Pack — $9
5 additional frameworks for developers who work across stacks:
| Framework | What's Covered |
|---|---|
| Vue 3 + Vite | Composition API, Pinia, Vue Router, Composables, Runes-ready |
| Svelte / SvelteKit | Svelte 5 Runes, Load Functions, Form Actions, Server Hooks |
| Python / FastAPI | Async Python, SQLAlchemy 2.0, Pydantic v2, Clean Architecture |
| Go | Idiomatic patterns, Error wrapping, Concurrency, slog, pgx |
| Flutter / Dart | BLoC, Clean Architecture, GoRouter, GetIt, Freezed |
Full-Stack Pack — $19
All 10 frameworks — everything in the Free Starter + Framework Pack, plus:
| Framework | What's Covered |
|---|---|
| Rust | Ownership, Axum, SQLx, thiserror/anyhow, Tokio, Serde |
| .NET / ASP.NET Core | Clean Architecture, EF Core, MediatR, CQRS, FluentValidation |
Ultimate Bundle — $29
Everything in the Full-Stack Pack, PLUS:
- AGENTS.md template — Multi-agent Claude Code orchestration with defined roles (Lead, Code, Review, Test, Docs agents), communication protocols, parallel work patterns, and quality gates
- Lifetime updates — every new version and framework added automatically
- Priority requests — your framework suggestions considered first
Preview: What These Files Look Like
Here's a taste of the Go file (from the Framework Pack):
## Error Handling
- Always check errors immediately after the call. Never ignore errors with `_`.
- Wrap errors with context: `fmt.Errorf("fetching user %s: %w", id, err)`.
- Define sentinel errors as package-level variables: `var ErrNotFound = errors.New("not found")`.
- Use `errors.Is()` for sentinel comparisons. Use `errors.As()` for typed error extraction.
## Concurrency
- Use `errgroup.Group` for coordinated goroutines with error propagation and context cancellation.
- Never launch a goroutine without a way to cancel it (context, done channel, or WaitGroup).
- Channels for communication between goroutines. `sync.Mutex` only for protecting shared in-memory state.
That's 10 lines out of 170+. The full file covers project structure, naming conventions, HTTP handlers, database patterns, dependency injection, testing, logging, and security.
How It Works
- Download the
CLAUDE.mdfile for your framework - Place it in your project root (same level as
package.json/go.mod/Cargo.toml/ etc.) - Rename it to
CLAUDE.md(if needed) - Open Claude Code — instructions are automatically picked up
No config. No extensions. No setup.
For Monorepos
Place different CLAUDE.md files in each package/service directory:
monorepo/
CLAUDE.md # Root-level shared conventions
apps/web/CLAUDE.md # Next.js rules
apps/api/CLAUDE.md # Node.js/TypeScript rules
services/auth/CLAUDE.md # Go rules
Claude Code respects the nearest CLAUDE.md to the files you're working on.
What's in Each File
Every template covers these areas, tailored to the specific framework:
| Section | What It Covers |
|---|---|
| Project Structure | Recommended directory layout and file organization |
| Architecture Patterns | Framework-specific design patterns and conventions |
| Type System | Strict typing rules, patterns, and anti-patterns |
| Error Handling | Structured error handling, custom errors, user-facing messages |
| Data Layer | Database access, ORM patterns, migrations, transactions |
| Testing | Unit, integration, and E2E testing strategies with specific tools |
| Security | Auth, input validation, injection prevention, secrets management |
| Performance | Bundle analysis, caching, lazy loading, query optimization |
| Code Style | Naming conventions, file organization, linting configuration |
FAQ
Does this work with Claude Code's free tier?
Yes — CLAUDE.md files work on all Claude Code plans, including free.
Can I combine files for a monorepo?
Yes — place different CLAUDE.md files in each package directory. See the monorepo section above.
How are premium files delivered? Instantly via Polar.sh after purchase. Download link in your email.
Will these be updated? Ultimate Bundle buyers get all future updates automatically. Other packs receive major version updates.
Can I customize the templates? Absolutely. These are starting points. Edit them to match your team's specific conventions.
Do these work with other AI tools? These are optimized for Claude Code, but the instruction format works with any AI tool that reads project-level markdown files.
Built by Virtual Life Solutions
We build AI-native developer tools. Follow updates: @EveApplesSynth
Star this repo if the free templates helped you — it helps others find it too.
Free Starter Pack: MIT License. Premium packs: personal + commercial use, no redistribution.
