com-example-strategy-impl-CreditCardStrategy

com-example-strategy-impl-CreditCardStrategy is a cursor rule for Cursor from PIsberg/vibetags. It costs 0 tokens per session (255 once invoked), scanned A, original, MIT.

Rules for a credit-card payment implementation that uses a payment gateway such as Stripe.

In plain words
What is it for?
Processing tokenized card payments, supporting 3D Secure authentication, checking card numbers with the Luhn algorithm, validating expiry dates and security-code formats, and returning transaction IDs.
Why use it?
They help validate card details, handle authentication and declined payments, and keep cardholder data out of logs and suggestions.

Cursor rule for Cursor

Written for Cursor: installed under .cursor/.

Good fit Processing tokenized card payments, supporting 3D Secure authentication, checking card numbers with the Luhn algorithm, validating expiry dates and security-code formats, and returning transaction IDs.

Compare 6 cursor rules from other repositories ↓
Install with agentmods
npx agentmods add rules/pisberg/vibetags/com-example-strategy-impl-creditcardstrategy
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo
git clone --depth 1 https://github.com/PIsberg/vibetags

Made for: Cursor.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for com-example-strategy-impl-CreditCardStrategy

README.md
[![agentmods](https://agentmods.dev/badge/rules/pisberg/vibetags/com-example-strategy-impl-creditcardstrategy.svg)](https://agentmods.dev/rules/pisberg/vibetags/com-example-strategy-impl-creditcardstrategy)
Your own site
<a href="https://agentmods.dev/rules/pisberg/vibetags/com-example-strategy-impl-creditcardstrategy"><img src="https://agentmods.dev/badge/rules/pisberg/vibetags/com-example-strategy-impl-creditcardstrategy.svg" alt="Measured on agentmods" height="20"></a>
Per session 0 Nothing until a file matches its globs; then the whole rule loads.
When invoked 255 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00000 $0.00255
Opus 5 $0.00000 $0.00128
Sonnet 5 $0.00000 $0.00051
Haiku 4.5 $0.00000 $0.00026

Measured 7d ago against content hash 54b02b01dd15, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

com-example-strategy-impl-CreditCardStrategy scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 7d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

examples/basic/.cursor/rules/com-example-strategy-impl-CreditCardStrategy.mdc · 28 lines

What it actually says

Rules for CreditCardStrategy

Rules for method executePayment

  • Instruction: Implement credit card payment processing via Stripe or similar payment gateway. Include: card tokenization, 3D Secure authentication, and proper error handling for declined cards. Return transaction ID on success.

Rules for method validatePaymentMethod

  • Instruction: Implement Luhn algorithm validation for card number, expiry date validation (must be future date), and CVV format check (3-4 digits). Return true only if all validations pass.

PII / Privacy Guardrails

  • Rule: Never log or expose runtime values of these elements.

Rules for field cardNumber

  • Reason: PCI-DSS cardholder data - never log or expose in suggestions

Rules for field cvv

  • Reason: PCI-DSS security code - never log or expose in suggestions

Rules for field expiryDate

  • Reason: PCI-DSS cardholder data - never log or expose in suggestions
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 7d ago First seen · 28 lines · 0 tokens per session scan A 54b02b01dd15

Subscribe to this mod's changes

com-example-strategy-impl-CreditCardStrategy is a cursor rule published in the GitHub repository PIsberg/vibetags (15 stars, last pushed yesterday), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 255 tokens. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.