release
Anthropic SDK v0.103.1
May 19, 2026
v0.103.1, released on 2026-05-19, fixes a runner bug so SessionToolRunner skips tool calls it does not own. The patch is narrowly scoped but important for preventing incorrect tool execution and ownership handling in session workflows.
0.103.1 (2026-05-19) Full Changelog: v0.103.0...v0.103.1 Bug Fixes runner: skip tool calls SessionToolRunner does not own ( #1817 ) ( 9425c6a )
Source: github.com