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For any AI agent

Prompts, done properly.

Reusable Markdown instruction modules for AI agents — pick, stack, and paste one file into Claude, ChatGPT, Cursor, or any tool. Export as CLAUDE.md, AGENTS.md, .cursorrules, and more. If you don't know how to prompt, that's what these modules are for.

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30
modules
10
export targets
2
stacks

How it works

Stack modules. Compile one file.

Each module can depend on others. The compiler resolves the order and merges them into a single instruction file, ready for your agent.

Payment System Basics

@markdowners/payment-system-basics

Stripe Integration

@markdowners/stripe-integration

Webhook Handling

@markdowners/webhook-handling

CLAUDE.mdAGENTS.mdGEMINI.md.cursorrules+ 6 more
3 modules → 1 file
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# Payment System Basics
Core rules for handling payments safely: never
store raw card data, validate amounts server-side,
treat webhooks as the source of truth.
 
# Stripe Integration
Stripe-specific integration rules on top of
payment-system-basics: key handling, Elements,
SCA/3DS, and treating webhooks as the source
of truth.
 
# Webhook Handling
Signature verification, idempotency keys, and

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