0.30.0 (2026-11-07)

❗️Breaking ❗

Switch from httpx to httpx2 in generated clients

httpx2 is largely compatible with httpx and should only be a breaking change for users who customize the internal Client.

Thanks to @s-sajid-ali and @johnthagen for making this one happen in PR #1461 and discussion #1455!

🚀 Features

• Update uv_build to 0.13 when using --meta=uv (#1507)

🐛 Fixes

• Let httpx2 choose the multipart/form-data boundary (#1511)

Let httpx2 choose the boundary for multipart/form-data requests

Since 0.29.0, generated endpoints sent every multipart/form-data body with the fixed boundary +++, so an uploaded file containing \r\n--+++ was cut short at that point (#1509). These bodies no longer set Content-Type, so httpx2 sets it with a random boundary for each request, as single-body endpoints did before 0.29.0. Endpoints with several body types still get a boundary (#947).