APIs
How to design APIs that last
Clear contracts, versioning, and backward compatibility matter more than trendy frameworks. We build APIs that remain stable as the system evolves.
APIs are contracts with the future. Breaking them burns trust with integrators and your own frontend. We treat additive changes as the default: new fields optional, old fields supported for a deprecation window, and versioning (URL or header) when behavior must change incompatibly.
Good contracts are explicit: error shapes, pagination rules, idempotency for writes, and documentation that matches reality. OpenAPI or similar specs help, but only if they stay in sync with the implementation—generated or tested contracts beat stale PDFs.
Longevity also means operational clarity: request IDs, structured logs, rate limits that fail gracefully, and monitoring on latency and error budgets. An API that is “correct” but opaque in production will still get replaced.