v1.2.0
Changed 1
- Beta files/skills namespaces now use GA shapes and drop dated beta header pins
Fixed 5
- Sign raw request bytes so binary file uploads work with AWS and Bedrock
- Make event accumulator forward-compatible with new event types in sessions
- Allow read to return a view_range of a file over the size cap in tools
- Preserve exact file bytes in the agent toolset and memory tool without newline translation
- Require headers to be passed to unwrap() in webhooks
From Anthropic Python SDK
1.2.0 (2026-08-27)
Full Changelog: v1.1.0...v1.2.0
Features
- api: beta files/skills namespaces use GA shapes; drop dated beta header pins (9df4565)
Bug Fixes
- aws,bedrock: sign raw request bytes so binary file uploads work (#531) (f50e910)
- ci: resolve assignment aliases in detect-breaking-changes (f2c4925)
- sessions: make event accumulator forward-compatible with new event types (#533) (cbbaf6e)
- tools: let read return a view_range of a file over the size cap (#538) (b68e876)
- tools: preserve exact file bytes in the agent toolset and memory tool (no newline translation) (#540) (56921a8)
- webhooks: require headers to be passed to
unwrap()(0baa902)
Documentation
- api: clarify pagination on the organization rate-limit list endpoints (1832b27)