Stop Re-Explaining Your Stack to Cursor AI in Every Session

If you're using Cursor AI, you know the drill. Every new session, every new file, Cursor forgets your preferences unless you explicitly restate them. "Use TypeScript strict mode," "Prisma select only," "Server components by default."

It gets tedious. But there's a better way.

The Problem: Cursor Doesn't Remember Context

Cursor is powerful, but it has no persistent memory across sessions. You define conventions, write them down, maybe add a .cursorrules file — but Cursor still generates code that doesn't match your standards unless you explicitly guide it each time.

This is especially painful when working with:

• TypeScript strict mode and discriminated unions
• Next.js App Router patterns
• Prisma best practices
• API security and webhooks
• Error handling

The Solution: Cursor Rules Pack

I packaged 7 production-tested Cursor rules that define your standards once. Each rule includes a before/after example showing the difference it makes.

What's Inside

TypeScript Rules

• Strict mode enforcement
• Discriminated unions for state
• Type-safe API responses

Next.js Rules

• App Router server components by default
• Proper loading patterns
• Route structure conventions

Prisma Rules

• Explicit select queries
• Transaction patterns
• Index strategy

API Security Rules

• Webhook signature verification
• Idempotency handlers
• Async job processing

Error Handling Rules

• Typed error classes
• Consistent error responses
• Logging patterns

How It Works

1. Add the .cursorrules file to your project
2. Cursor reads the rules at session start
3. Apply your coding standards consistently
4. No more re-explaining your stack

Real Example

Before (Default Cursor Behavior)

// Cursor generates loose types, no strict enforcement
async function getUser(id: string) {
  const user = await prisma.user.findUnique({
    where: { id }
  })
  return user
}

After (With Cursor Rules Pack)

// Cursor enforces strict types and explicit selects
async function getUser(id: string): Promise<User | null> {
  const user = await prisma.user.findUnique({
    where: { id },
    select: { id: true, email: true, name: true }
  })
  return user
}

The difference? Type safety, explicit queries, no undefined runtime surprises.

Why These Rules Matter

These rules aren't theoretical — they're from production code that's been tested and refined. They solve real problems:

• Reduce runtime errors from loose types
• Improve performance with explicit Prisma selects
• Standardize API responses across your stack
• Handle webhooks securely (signature verification, idempotency)
• Make errors predictable and debuggable

Get Started

The Cursor Rules Pack v2 includes 7 rules with before/after examples for each rule. Drop it into your project and let Cursor handle the rest.

Clink here to get the Cursor Rules Pack v2

What's Your Experience?

How do you handle persistent context in Cursor? Do you use .cursorrules files, or have you found another approach? Let me know in the comments.

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This pack includes 7 production-tested rules covering TypeScript, Next.js, Prisma, API security, and error handling. Each rule includes before/after examples showing the difference it makes.