Home / travisjneuman / .claude · GitHub

payment-integration SKILL.md skillA

payment-integration from travisjneuman/.claude is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned

mdr add travisjneuman/.claude/payment-integration@git:20261006.3938f60

Pins git:20261006.3938f60 in mdr.lock. Pin the fingerprint instead.

Audit grade: A, 17 of 17 checks passed
Kind: SKILL.md skill
Repository: travisjneuman/.claude
Path: skills/payment-integration/SKILL.md
Versions recorded: 4
Latest version: git:20261006.3938f60, committed Oct 6, 2026
First version recorded: Feb 7, 2026
Size: 16,649 bytes
Repository stars: 105
License: MIT

Stripe, RevenueCat, subscription billing, webhooks, PCI compliance, and tax. Use when integrating payments or subscriptions, handling payment webhooks, or reviewing billing and PCI scope.

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# Payment Integration

## Overview

This skill covers implementing payment processing and subscription billing in web and mobile applications. It addresses Stripe integration (Checkout, Elements, PaymentIntents), subscription lifecycle management, webhook handling with idempotency, PCI compliance, metered and usage-based billing, tax calculation, refund processing, and RevenueCat for mobile subscriptions.

Use this skill when adding payment processing, building subscription billing, handling Stripe webhooks, implementing pricing pages, managing payment failures, or integrating mobile in-app purchases.

---

## Core Principles

1. **Never handle raw card data** - Use Stripe Elements or Checkout to keep card numbers off your servers entirely. This keeps you at PCI SAQ-A (the simplest compliance level) rather than SAQ-D.
2. **Webhooks are the source of truth** - Never trust client-side payment confirmation. A successful PaymentIntent on the client means nothing until your webhook handler confirms `payment_intent.succeeded`. Build your system around webhook events.
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint

mdr add travisjneuman/.claude/payment-integration@sha256:602c74cc7107faf6

The line at the top of this page pins the label git:20261006.3938f60, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

[![mdr](https://markdownregistry.com/badge/art_5iizlnbh4ilw2guo.svg)](https://markdownregistry.com/a/art_5iizlnbh4ilw2guo)

1 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 4 versions of this file, between Feb 7, 2026 and Oct 6, 2026, about one every 81 days.

version	committed	commit	size	audit
git:20261006.3938f60 latest	2026-10-06	3938f60	16,649 B	A	view · diff
git:20260930.c8d311d	2026-09-30	c8d311d	15,673 B	A	view · diff
git:20260228.62823bf	2026-02-28	62823bf	15,561 B	A	view · diff
git:20260207.49cc324	2026-02-07	49cc324	15,552 B	A	view

Audit of the latest version

A 17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.

pass: Frontmatter block present
pass: Frontmatter declares a name
pass: Frontmatter declares a description
pass: Size between 200 bytes and 200 KB (16649 bytes)
pass: No zero-width or bidi control characters
pass: No instruction hidden inside an HTML comment
pass: No link to an exfiltration or paste host
pass: No credential-shaped string
pass: No instruction to send local credentials anywhere
pass: No text hidden with inline styles
pass: No prompt-injection phrasing
pass: No curl or wget piped into a shell
pass: No recursive delete of root, home or parent
pass: No instruction to read or print local credentials
pass: No base64 blob over 200 characters
pass: No link to a raw IP address
pass: No script tag

Source

GitHub

travisjneuman/.claude · 105 stars · license MIT · pushed 2026-10-19 · branch master

API

GET https://markdownregistry.com/api/v1/artifacts/art_5iizlnbh4ilw2guo
GET https://markdownregistry.com/api/v1/resolve?ref=travisjneuman/.claude/payment-integration
GET https://markdownregistry.com/api/v1/blob/602c74cc7107faf627890ccd756a47329c0b6ce840802509fbfb8a03163a278b

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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