Design, implement, and refactor Ports & Adapters systems with clear domain boundaries, dependency inversion, and testable use-case orchestration across TypeScript, Java, Kotlin, and Go services.
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The skill is specifically designed for direct financial operations, giving the agent the ability to move money or execute financial transactions — such as payment processing, cryptocurrency operations, banking integrations, or market order execution.
The skill explicitly models payment gateway ports and adapters: it defines a PaymentGatewayPort with an authorize(...) method, shows a StripePaymentGateway adapter, and the composition root wires a Stripe client (StripePaymentGateway) into use cases. These are specific payment gateway integrations (Stripe) and thus constitute direct financial execution capability rather than a generic API or browser tool.