Spring Boot 3 + Java 21
Package-by-feature layout, ProblemDetail errors, Flyway + JPA rules that prevent N+1, Spring Security 6 lambda DSL, Testcontainers tests.
Opinionated AI coding rules for your stack.
Drop-in rules for Cursor (.cursor/rules/*.mdc) and Claude Code (CLAUDE.md) that tell your AI assistant exactly how your project is structured, tested, secured and migrated — instead of generic “write clean code” advice.
What you get
- 5–8 focused, scoped rule files per stack, each auto-attached only to matching files via
globs, so context stays small. - A condensed
CLAUDE.md(well under the 200-line size Anthropic's docs recommend) with commands, architecture and conventions. - Concrete decisions: folder layout, naming, error format, migration workflow, auth checks, test tooling.
- Each pack is checked for consistency against a small sample project for its stack, and every rule file's frontmatter is validated.
- Plain text files. Read them, edit them, delete what you disagree with.
Packs
FastAPI + Python 3.12
Pydantic v2 and SQLAlchemy 2.0 async only (no legacy APIs), router → service → repository layering, Alembic migrations, JWT auth, pytest + httpx.
Next.js 15 App Router + TypeScript
Server Components by default, async params/cookies, typed Server Actions with Zod, Drizzle migrations, security headers, Vitest + Playwright.
Pricing
Single pack
$12
One stack: all rule files, CLAUDE.md, README with install steps.
Buy a packBundle — all 3
$29
Spring Boot, FastAPI and Next.js packs together.
Buy the bundleFree sample
$0
Two real rule files from each pack. No email required.
Checkout and sales tax handled by Polar.
One-time purchase. Use in any number of your own or your employer's projects.