NEWMedicare Advantage 2027 plans are live in the API.Read the changelog

Versioning

The major version is in the path: every endpoint starts with /v1. Changes inside v1 add things; they do not break what you built.

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What can change inside v1

  • New endpoints, new optional parameters and new response fields.
  • New values in notes, and new problem types for new kinds of errors.
  • Wording of title, detail and explanation. Branch on type and answer, never on text.

Write clients that ignore fields they do not know. A change that would break a v1 client ships under a new path, such as /v2.

Follow the changes

The changelog lists every change. /openapi.json always describes the API that is running, and GET /v1/status returns its build in data.version.

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