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    5. Migration and Versioning Policy

    Migration and Versioning Policy

    The public API preserves compatibility within v1. Breaking changes require an explicit policy review, changelog entry, and migration path.

    Compatibility commitments

    • Additive fields and endpoints may ship within v1.
    • Existing response fields should not change meaning within v1.
    • Required request fields should not be added to existing v1 writes without a compatibility plan.
    • SDK and MCP surfaces are checked against the same OpenAPI scope and operation model.

    Source policy

    The breaking-change policy is maintained at docs/developer-platform/openapi-breaking-change-policy.md and enforced by contract checks.

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