API Contract Design

Invoked when a new API endpoint or service boundary is being created. The contract is the source of truth — implementation must conform to it, not the other way around.


Read the full skill on GitHub. The site shows the first section; the canonical full content with all principles, examples, and rules lives in the repo.

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What the full skill covers

  • Micro-Skills
  • Outputs
  • Edge Cases
  • Scope
  • Guardrails
  • Ask-When-Ambiguous
  • Decision Criteria
  • Success Criteria