# January 14, 2026

## 3.29.0

**`(feat):`** Add backward-compatible `builder()` method for OAuth client credentials authentication.
This restores support for the classic builder pattern `Client.builder().token("...")` and
`Client.builder().credentials("...", "...")` alongside the existing `withToken()` and
`withCredentials()` shortcuts. This prevents breaking changes for customers who upgraded.