Claude Code 2.1.307 released

A feature and fixes release that updates the Claude API version, improves MCP server handling, and resolves issues across cloud sessions, self-hosted runners, and the VSCode extension.

What changed in 2.1.307

• Added /claude-api api-version command to move Claude API code to version 2026-10-21 and new claude_code.safety_event OpenTelemetry event for tracking tool calls and safety checks.
• Fixed model-not-found errors with 1M context disabled, MCP authentication keychain locking on macOS, and servers timing out when computers sleep during connection.
• Fixed HTTP MCP tool calls being sent twice on connection close, conversations reappearing after /clear in cloud sessions, and long model descriptions appearing in help menus.
• Fixed WebFetch tool errors on 4xx status codes in Cowork sessions, artifact reads failing on reused connections, and repository picker appearing frozen while searching.
• Improved unparseable tool call recovery with retries, fork subagent coordination, browser sign-in speed, and checkout hook timeout handling on self-hosted runners.

Check before you update

• Self-hosted runner checkout hooks now stop after 30 minutes by default and fail the session; use --checkout-hook-timeout-min to adjust.
• axScreenReader setting and CLAUDE_AX_SCREEN_READER now apply only from user, managed, or --settings sources.

Summarised by AgentGid from Anthropic's official release notes on GitHub, as reported there; read the original before relying on it. Price, status and release dates come from our daily data.