Payment Security Clerk Billing Stripe

This is the smart way to handle payments without touching card data or dealing with PCI-DSS compliance, which costs $50k–$200k annually and trips up 84% of small companies on their first audit. It walks you through Clerk Billing plus Stripe integration with concrete examples: pricing tables, subscription gating with the Protect component, webhook handlers with Svix signature verification, and checking plan status in both server and client components. The architecture is clean because Stripe handles all card data, Clerk manages the subscription state, and your app just reads status flags. If you need to gate features behind payment or set up subscriptions without becoming liable for card breaches, this covers the implementation end to end.

skills.sh installs: 183
GitHub stars: 18
last updated: Aug 21, 2026

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Install

$ npx -y skills add harperaa/secure-claude-skills --skill payment-security-clerk-billing-stripe --agent claude-code

Installs into .claude/skills of the current project.

Files

Payment Security - Clerk Billing + Stripe

Why We Don't Handle Payments Directly

PCI-DSS Compliance Requirements

If you store, process, or transmit credit card data, you must comply with Payment Card Industry Data Security Standard (PCI-DSS). Requirements include:

Annual security audits ($20,000-$50,000)
Quarterly vulnerability scans
Secure network architecture
Encryption of cardholder data
Access control measures
Regular security testing

Small companies: 84% fail initial PCI audit

Ongoing compliance costs: $50,000-$200,000 annually

Real-World Payment Handling Failures

Target Breach (2013): 41 million card accounts compromised because they stored payment data and had insufficient security. Settlement: $18.5 million

Home Depot Breach (2014): 56 million cards stolen. They were storing card data locally. Settlement: $17.5 million