API Design
APIs are user interfaces – just without a visual layer.
They define how systems communicate, how platforms scale, and how efficiently people can work with technology. Poor API design is rarely dramatic. Its impact accumulates quietly through friction, workarounds, and growing complexity.
Common consequences of poor APIs
- increasing technical debt
- fragile integrations
- tight coupling between teams and systems
- developer frustration
- slow progress despite high investment
Good API design, by contrast, is quietly reliable.
It reduces coordination effort, enables reuse, and builds trust between systems.
Characteristics of good API design
At Mitterberger:Lab, we treat APIs as products with users – even if those users are other systems and developers.
Our Focus
We design APIs around real usage, not internal convenience.
This includes:
- clear resource and domain models that reflect business logic
- semantically clean endpoints that remain understandable over time
- consistent error logic that supports effective debugging
- documentation as a core product component, not an afterthought
- long-term extensibility without breaking existing integrations
Good API design is an investment in stability.