Create a developer workbench that visualizes how API request and response payloads evolve across versions and identifies compatibility risks before deployment.
Allow users to import OpenAPI specifications, JSON schemas, sample payloads, or manually defined API versions. Compare fields, types, required properties, enum values, nesting structures, validation rules, and response semantics.
Detect changes such as removed fields, renamed properties, stricter validation, changed nullability, altered defaults, and newly introduced response conditions. Classify findings by affected consumers and explain when a change is potentially breaking rather than automatically declaring every difference incompatible.
Generate migration examples, compatibility tests, versioned fixtures, and a consumer impact report. Let developers define their own compatibility policies for internal APIs, public APIs, and event schemas.
Include a timeline view showing when changes were introduced and a sandbox for testing old consumer payloads against new contracts. Never claim compatibility without evaluating the relevant behavior and assumptions. Export reports and test artifacts for pull requests.
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