8 opinionated rule files that make Cursor's AI write code exactly the way you want it.
Cursor is powerful, but out of the box it doesn't know your conventions. These rule files teach it your patterns — Next.js App Router, TypeScript strict mode, Prisma, Stripe, Tailwind, and testing. Drop them in and the AI immediately writes better code.
Server components, route handlers, metadata, loading states. Cursor follows Next.js 14 best practices automatically.
No any types, proper generics, discriminated unions. The AI writes type-safe code without being told.
Relation handling, migration patterns, query optimization. Database code that's correct from the first generation.
Webhook verification, idempotency, error handling. Stripe code that doesn't break in production.
Consistent class ordering, responsive patterns, component structure. Clean UI code every time.
Test structure, mocking patterns, assertion styles. Generated tests that actually catch bugs.
# TypeScript Conventions
- NEVER use `any` type. Use `unknown` + type guards instead.
- Prefer discriminated unions over optional fields.
- All function parameters must be typed explicitly.
- Return types must be explicit for exported functions.
- Use `as const` for literal objects and arrays.
- Prefer `interface` for object shapes, `type` for unions.
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No. The master .cursorrules file works standalone. The individual files are for teams that want granular control per domain (Stripe rules, Prisma rules, etc.).
The TypeScript and testing rules are framework-agnostic. The Next.js, Prisma, Stripe, and Tailwind rules are specific to those tools.
Copy the .cursorrules file to your project root. That's it. Cursor picks it up automatically.
Yes. As Cursor's rule system evolves, buyers get access to updates.
One purchase. Instant download. Lifetime access.
Get Cursor Rules Pack — Next.js + TypeScript for $19 →