Designing partner APIs that stay stable as you evolve

Public and partner-facing APIs are promises. Once another team—or another company—depends on your endpoints, every breaking change has a blast radius beyond your own repo.

Contract-first saves rework

We start from OpenAPI (or equivalent) specs, generate stubs where it helps, and treat the schema as the source of truth. That keeps product, backend, and consumers aligned before a line of production code ships.

Versioning is a product decision

Whether you use URL versions, headers, or negotiated formats, the rule is the same: old clients must keep working until you communicate a sunset window. We help you define deprecation policies that legal and support can stand behind.

Errors should be actionable

Consistent error codes, correlation IDs, and human-readable messages reduce integration time and support tickets. Your partners should never need a private Slack channel to understand why a call failed.