Deprecation and Sunset
type: TechArticle
description: When you retire an endpoint, announce it in machine-readable form: the Deprecation and Sunset response headers tell clients it is going away, when, and where to go next — so integrations migrate before anything breaks.
language: en
is part of: Web Specification Studio
author: Web Specification Studio
publisher: Web Specification Studio
license: https://creativecommons.org/licenses/by/4.0/
date modified: 2026-07-08T00:00:00.000Z
citation: RFC 9745 — The Deprecation HTTP Response Header Field
  type: CreativeWork
  publisher: IETF
citation: RFC 8594 — The Sunset HTTP Header Field
  type: CreativeWork
  publisher: IETF
citation: IANA — Link Relations Registry
  type: CreativeWork
  publisher: IANA

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item list element: Home
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  item: https://webspecification.com/
item list element: Spec
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  item: https://webspecification.com/spec/
item list element: Resilience
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  item: https://webspecification.com/spec/resilience/
item list element: Deprecation and Sunset
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  item: https://webspecification.com/spec/resilience/deprecation-and-sunset/