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API Sunset Comms Bundle

A developer comms pack — changelog entry, deprecation notice, and migration guide stub — for sunsetting an API endpoint.

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Get a developer comms pack in a changelog entry, deprecation notice, and migration guide stub, all following Keep a Changelog 1.1.0 and RFC 8594/9745 conventions, for sunsetting an API endpoint.

Who it's for

  • API developers handling endpoint deprecations
  • Technical writers creating changelogs and migration guides
  • Software engineers managing API updates and sunsets
  • DevOps teams streamlining communication about API changes

Use cases

  • Sunsetting an outdated API endpoint and guiding users to a new one
  • Communicating API deprecations and migrations to internal teams and external users
  • Creating a changelog entry for an API update with a clear deprecation notice
  • Developing a migration guide to help users transition from an old API to a new one
  • Informing stakeholders about upcoming API changes and their impact

FAQ

what goes in an api deprecation notice?

An API deprecation notice should include what is deprecated, the deprecation date, the sunset date, a migration link placeholder, and a clear explanation of the changes, following RFC 8594/9745 conventions. This notice informs users about the upcoming changes and guides them through the migration process.

how do i write a changelog entry for an api update?

A changelog entry for an API update should use the exact section name 'Deprecated' and follow Keep a Changelog 1.1.0 conventions. It should clearly state what has been deprecated, the deprecation date, and provide a link to the migration guide for further instructions.

what is the structure for an api deprecation notice?

The structure for an API deprecation notice includes stating what is deprecated, specifying the deprecation and sunset dates, providing a migration link placeholder, and offering a clear explanation of the changes and the migration process. This structure helps in effectively communicating the API changes to the users.

how do i create a migration guide for an api change?

A migration guide for an API change should include the old endpoint and the replacement, explain any changes in the API's behavior or functionality, and provide examples or instructions on how to migrate. The guide should be concise, easy to follow, and accessible to both internal teams and external users.

Last updated: 2026-06-28