v2.53.0

2.53.0 (2026-08-07)

Full Changelog: v2.52.0...v2.53.0

Features

• api: add mid-conversation-tool-changes-2026-07-01 beta (02bf73e)
• api: add support for session budgets, advisor tool, pinned inference location and skills auto-loading from GitHub (ae84c87)
• client: add accessors for properties shared across union variants (c61dd17)

Bug Fixes

• client: add id()/toolUseId() delegating accessors to StructuredContentBlock wrappers (#183) (c69c3a3)

Chores

• api: remove retired Claude Opus 4.1 models (003af97)
• docs: small updates to descriptions (7faf29c)
• docs: updates to a few documentation strings (1e66bdc)