Release Wed, Sep 9, 2026 1 min read

Claude Agent Sdk Typescript 0.3.267

Original release notes

What's changed

Added getCcrEvent(query, message) and getSseLastSequenceNum(query) to the browser SDK's SSE transport, plus fromSequenceNum, onCatchUpTruncated and onDeliveryUpdate SSE options
Changed systemPrompt recording to default on for custom prompts and appends (a mid-session prompt change takes effect at the next compaction); pass snapshot: false to keep per-request rendering
Updated to parity with Claude Code v2.1.267

Update

npm install @anthropic-ai/claude-agent-sdk@0.3.267
## or
yarn add @anthropic-ai/claude-agent-sdk@0.3.267
## or
pnpm add @anthropic-ai/claude-agent-sdk@0.3.267
## or
bun add @anthropic-ai/claude-agent-sdk@0.3.267