ReleaseAnthropicAnthropicpublished Sep 8, 2026seen 11h

anthropics/claude-agent-sdk-typescript v0.3.265

anthropics/claude-agent-sdk-typescript

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v0.3.265

Repository: anthropics/claude-agent-sdk-typescript

Tag: v0.3.265

Published: 2026-09-08T20:37:33Z

Prerelease: no

Release notes:

What's changed

  • Added user_message_uuid and user_message_uuids to a synthetic turn's first reply and result for a message sent with isSynthetic: true and a uuid, naming the message that started it
  • Added user_message_uuid and user_message_uuids to the first reply and the result of a turn Claude Code started itself, such as a resume, naming the messages you sent that it picked up mid-turn
  • Fixed user_message_uuid missing from the success result of a turn that sent no API request, such as a slash command
  • Fixed multi-turn sessions resetting the shell working directory to the cwd option at each new user message; a cd made by the agent now persists across turns, as in the interactive app
  • Changed user_message_uuid to be set on the first reply after each change of the message a turn is answering, instead of on one reply frame per turn
  • Updated to parity with Claude Code v2.1.265

Update

npm install @anthropic-ai/claude-agent-sdk@0.3.265
# or
yarn add @anthropic-ai/claude-agent-sdk@0.3.265
# or
pnpm add @anthropic-ai/claude-agent-sdk@0.3.265
# or
bun add @anthropic-ai/claude-agent-sdk@0.3.265