Contract tests without the theatre

Spring Cloud Contract becomes shelfware when failures read like binary soup. In Contract-First APIs with OpenAPI + Spring, we rewrote our review rubric to reward plain-language diff summaries and penalize copy-pasted YAML.

Participants maintain a changelog file next to the OpenAPI document. Mentors ask rude questions: if a field disappears, which mobile screen breaks first? If nobody knows, the change waits. That slows merges and prevents outages.

We also document what we refuse to automate: nuanced enum migrations still get a human architecture note. The blog is a reminder that tooling amplifies discipline — it cannot invent it.