unstable API version previews changes that will ship in a future dated version. Use it to
test upcoming behavior before it becomes stable.
How to use unstable
Replace the version segment in your API path:Current differences from 2026-10
There are no differences right now. Every change that was in preview shipped in2026-10, so
unstable behaves the same as 2026-10 on every endpoint.
The unstable tab reuses the 2026-10 pages for every section. When a change lands in unstable
ahead of a dated release, its endpoint page is replaced with an unstable version and the change is
listed here.
When a new stable version ships, unstable rebases onto it and these differences reset.