API Deprecation Notice Generator

Feature, replacement, and sunset date, turned into real RFC 8594 Deprecation/Sunset HTTP headers plus a docs notice - not an invented custom format.

Feature / endpoint

Replacement

Sunset date

Docs URL

Reason (optional)

HTTP response headers (RFC 8594)

Deprecation: date="Thu, 31 Dec 2026 00:00:00 GMT"
Sunset: Thu, 31 Dec 2026 00:00:00 GMT
Link: <https://docs.example.com/migration/v2-users>; rel="deprecation"

Docs notice (markdown)

> **Deprecated:** `GET /v1/users` is deprecated (replaced by a paginated endpoint) and will be removed on **2026-12-31**.
> Use `GET /v2/users` instead.
> See https://docs.example.com/migration/v2-users for migration details.

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