1.39.0 (2026-04-26)
Features
- advisor tool support via SDK advisorModel option (#413) (c179753)
- Claude Code adapter with split SDK / client working directory (a08b541)
- default agent types and fallback routing (3a660e9)
Bug Fixes
- align haiku model id with sonnet/opus short form (#414) (47292f5)
- models: list claude-opus-4-7 in /v1/models (#429) (b72bab8)
- models: pin SDK model aliases via ANTHROPIC_DEFAULT_*_MODEL env (601ccd3)
- normalize context-usage to last iteration (67a559f)
- normalize context-usage to last iteration (0170adc)
- normalize subagent_type in passthrough streaming and non-streaming (41170e4)
- normalize tool parameter names in passthrough mode (1b92899)
- pi: implement extractClientWorkingDirectory for defense in depth (#428) (90fd26f)
- proxy: allow 4 turns when passthrough has both resume and deferred tools (6648603)