REST-APIS5 MIN READ
OpenAPI as Shared Contract, Not Documentation
Use an API contract artifact to coordinate design, mock, validation, SDKs, and change review.
Parallel build Frontend, backend, and QA start a billing endpoint from three different documents. The missing shared artifact creates rework. Principle Contract-first where teams depend on the same promise The contract should feed mocks, tests, SDKs, and breaking-change review. Docs last Records surprises Fewer integration surprises Make cross-team assumptions executable. 01 Timing 02 Detail 03 Try Step 1 A new partner endpoint starts next sprint.
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