external-api-integration

You separate API clients from domain services by using a service layer to translate application logic and map types, while the API client manages HTTP calls, JSON serialization, and error handling.

The best way to structure HTTP clients for API integrations is to abstract transport and wire-format details in a dedicated client layer, keeping low-level HTTP handling and error mapping separate from business logic.

Yes, this API integration approach handles JSON serialization and deserialization automatically within the API client layer, alongside managing low-level HTTP calls and mapping errors without touching business logic.

Yes, you can use this service layer pattern for SDK wrappers and webhooks, as it is ideal for any application logic that calls remote HTTP APIs and requires translating between application logic and the API client.

You should isolate HTTP handling from business logic to ensure clean and maintainable code, preventing transport and wire-format details from complicating the domain services that implement application ports.

A limitation of a dedicated API client layer is that it strictly focuses on HTTP handling, serialization, and error mapping, meaning it will not implement business logic or orchestrate complex application workflows.