Deprecation
Copy page
How an operation or version is retired, and what happens today.
Nothing in the Kelly API is deprecated today, and only one version, 2026-10-05, is served.
When something is retiredLink to this section
A version or operation past its sunset date answers 410 with the code version_sunset, and the Link header names the version to move to. The changelog announces each deprecation with its dates before it takes effect.
PlannedLink to this section
Deprecation and sunset headers on responses, and a notice period for each change class, are planned with the compatibility policy's first retirement (P8, October 16, 2026).