While Server Functions in React 19 are stable and will not break between minor versions, the underlying APIs used to implement Server Functions in a React Server Components bundler or framework do not follow semver and may break between minors in React 19.x.

To support Server Functions as a bundler or framework, we recommend pinning to a specific React version, or using the Canary release. We will continue working with bundlers and frameworks to stabilize the APIs used to implement Server Functions in the future.