[Release] anthropics/claude-code v2.1.105: v2.1.105

Claude Code v2.1.105 introduces significant improvements to worktree management, plugin architecture, and user experience. Key additions include the `path` parameter for EnterWorktree, PreCompact hook blocking, background monitor support for plugins, and the `/proactive` alias for `/loop`. The release focuses on stability with better API stream handling, improved error messaging, and numerous bug fixes across file operations, terminal rendering, and MCP integration.

Key Points

• •Added `path` parameter to EnterWorktree tool for switching between existing worktrees in the current repository
• •Implemented PreCompact hook support allowing hooks to block compaction by exiting with code 2 or returning `{"decision":"block"}`
• •Added background monitor support for plugins via top-level `monitors` manifest key that auto-arms at session start or skill invoke
• •Improved API stream reliability: streams now abort after 5 minutes of inactivity and retry non-streaming instead of hanging indefinitely
• •Enhanced network error handling with immediate retry messages instead of silent spinners for better user feedback
• •Increased skill description listing cap from 250 to 1,536 characters with startup warnings for truncated descriptions
• •Improved WebFetch to strip `<style>` and `<script>` tags from fetched pages, reducing content budget exhaustion
• •Fixed critical display issues: blank screens on wrapped prompts, whitespace trimming breaking ASCII art, and garbled bash output with clickable links
• •Resolved MCP integration issues: tools now available on first turn of headless sessions and malformed output fails fast instead of hanging
• •Fixed marketplace plugin installation to auto-install dependencies and prevent broken state during auto-updates

Workflow Diagram

Concepts