LaunchDevelopersOctober 21, 2026

Claude Code 2.1.307 adds API version switch and safety telemetry

Read original source →code.claude.com

The release adds /claude-api api-version to move Claude API code to version 2026-10-21, plus a claude_code.safety_event OpenTelemetry event fired whenever a permission rule, auto mode, safety check, hook or sandbox stops or prompts a tool call.

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