payment-contract-tester

v0.2.6

Research-grounded payment-integration hardening — a skill encoding Montonio/Stripe/Mollie silent-trap knowledge plus runnable contract-test reference fixtures (webhook idempotency, signature/authenticity, money-as-integer, terminal-state, replay) that run green against a correct handler and red against each seeded trap

CodexClaude Code2 Skills

By Andre PaatLicense: MIT0 GitHub starsUpdated last week

Directory evidence

Runtimes: Codex and Claude Code
Parsed components: 2 skill or MCP entries
Source updated: Sep 13, 2026
Manifest status: Canonical path parsed

The directory validates manifest shape and source location. It does not execute the plugin or provide a security endorsement. Review the indexing methodology →

Install payment-contract-tester for Codex and Claude Code

Installs for the current user

codex plugin marketplace add paat/claude-plugins
codex plugin marketplace upgrade paat-plugins
codex plugin add payment-contract-tester@paat-plugins

Paste and run these commands in a terminal with Codex. They add and refresh the paat-plugins catalog, then install this plugin.

Compatibility: the page URL and API slug “payment-contract-tester” remain stable.

Codex: payment-contract-tester@agent-plugin-marketplace → payment-contract-tester@paat-plugins

The installer fetches third-party code from the source repository shown on this page. This directory validates manifest structure and source location, but does not perform a security audit; review the manifest, components, and source before installing.

Get the source manually

$ git clone https://github.com/paat/claude-plugins

Clone the source repository, then follow its setup instructions to add the plugin to a compatible client. The plugin root is plugins/payment-contract-tester/.

Plugin files

plugins/payment-contract-tester/

├── .codex-plugin/plugin.json
├── .claude-plugin/plugin.json
├── skills/payment-contract-tester/SKILL.md
└── skills/payment-contract-tester-scaffold-workflow/SKILL.md

Included Skills2

payment-contract-testerskills/payment-contract-tester/SKILL.md

Use for payment/webhook hardening, idempotency, signature validation, double-charge risks, and contract-test generation.

payment-contract-tester-scaffold-workflowskills/payment-contract-tester-scaffold-workflow/SKILL.md

Run /payment-contract-tester:scaffold workflow from payment-contract-tester.

Plugin manifests2

plugins/payment-contract-tester/.codex-plugin/plugin.json

{
  "name": "payment-contract-tester",
  "version": "0.2.6",
  "description": "Research-grounded payment-integration hardening — a skill encoding Montonio/Stripe/Mollie silent-trap knowledge plus runnable contract-test reference fixtures (webhook idempotency, signature/authenticity, money-as-integer, terminal-state, replay) that run green against a correct handler and red against each seeded trap",
  "author": {
    "name": "Andre Paat"
  },
  "interface": {
    "displayName": "Payment Contract Tester",
    "shortDescription": "Research-grounded payment-integration hardening — a skill encoding Montonio/Stripe/Mollie silent-trap knowledge plus runnable contract-test reference fixtures (webhook idempotency, signature/authenticity, money-as-integer, terminal-state, replay) that run green against a correct handler and red against each seeded trap",
    "longDescription": "Research-grounded payment-integration hardening — a skill encoding Montonio/Stripe/Mollie silent-trap knowledge plus runnable contract-test reference fixtures (webhook idempotency, signature/authenticity, money-as-integer, terminal-state, replay) that run green against a correct handler and red against each seeded trap",
    "developerName": "Andre Paat",
    "category": "Testing",
    "capabilities": [
      "Skills"
    ],
    "defaultPrompt": "Use the payment-contract-tester plugin for this task.",
    "websiteURL": "https://github.com/paat/claude-plugins"
  },
  "homepage": "https://github.com/paat/claude-plugins",
  "repository": "https://github.com/paat/claude-plugins",
  "license": "MIT",
  "keywords": [
    "payment",
    "contract-test",
    "webhook-idempotency",
    "signature-verification",
    "montonio",
    "stripe",
    "mollie",
    "silent-failure",
    "money-as-cents",
    "estonian-saas"
  ],
  "skills": "./skills/"
}

plugins/payment-contract-tester/.claude-plugin/plugin.json

{
  "name": "payment-contract-tester",
  "version": "0.2.6",
  "description": "Research-grounded payment-integration hardening — a skill encoding Montonio/Stripe/Mollie silent-trap knowledge plus runnable contract-test reference fixtures (webhook idempotency, signature/authenticity, money-as-integer, terminal-state, replay) that run green against a correct handler and red against each seeded trap",
  "author": {
    "name": "Andre Paat"
  },
  "repository": "https://github.com/paat/claude-plugins",
  "license": "MIT",
  "keywords": [
    "payment",
    "contract-test",
    "webhook-idempotency",
    "signature-verification",
    "montonio",
    "stripe",
    "mollie",
    "silent-failure",
    "money-as-cents",
    "estonian-saas"
  ]
}