Claude Code v1.0.54

• Added environment variable support for OAuth callbacks: You can now set MCP_OAUTH_CALLBACK_PORT to specify a custom OAuth callback port
• Improved port selection for Windows: OAuth callback port range now adapts based on platform (Windows: 39152-49151, others: 49152-65535)
• Example usage:

  export MCP_OAUTH_CALLBACK_PORT=45000
  claude-code

• New file watcher implementation: Added comprehensive file system monitoring with chokidar integration for better detection of external file changes
• Settings change detection: Automatically detects when settings files are modified externally and can reload configurations
• Improved performance: Better handling of file system events with debouncing and throttling

• Better validation messages: Settings file validation now provides more descriptive error messages with specific field names
• Schema documentation: All settings fields now include helpful descriptions in the schema
• New settings options:
• permissions.allow/deny: Glob patterns for file/directory access control
• permissions.defaultMode: Default permission mode when Claude Code needs access
• permissions.disableBypassPermissionsMode: Option to disable permission bypass
• permissions.additionalDirectories: Additional directories to include in permission scope
• hooks: Custom commands to run before/after tool executions
• forceLoginMethod: Force specific login method ("claudeai" or "console")
• otelHeadersHelper: Path to script for OpenTelemetry headers

• Simplified shell snapshots: Shell environment capture now outputs directly to stdout instead of writing temporary files
• Debug mode support: When CLAUDE_CODE_DEBUG is set, shell snapshots are saved to disk for troubleshooting
• Removed shell snapshot cleanup: Eliminated the periodic cleanup of old shell snapshots as they're no longer persisted by default

• Platform-specific focus shortcut:
• Windows: Alt+M to focus on the message input
• Mac/Linux: Cmd+M to focus on the message input

• Better error handling for commands: Failed commands now throw proper CommandError exceptions with context
• Improved command validation: More specific error messages when using unsupported command types
• New command execution function: Added K1B for executing prompt commands with better error handling

• Safer URL opening: Added URL validation before opening in browser to prevent security issues
• Windows PowerShell support: Improved browser opening on Windows using PowerShell for better compatibility

• Async qualification check: Added m$1 function for checking data sharing qualification asynchronously

• New imports: Added various Node.js stream, path, and process utilities for better system integration
• Constants reorganization: Moved and consolidated various timeout and configuration constants
• Improved error tracking: Better Sentry integration with more context for validation errors

• Removed duplicate imports: Cleaned up redundant imports of stream and process modules
• Fixed shell environment issues: Better handling of shell configuration file detection and sourcing
• Improved Windows compatibility: Better path handling and process execution on Windows

• Shell snapshot behavior: Shell snapshots are no longer automatically saved to disk unless in debug mode
• OAuth port ranges: Changed default OAuth callback port ranges based on platform

• Code refactoring: Multiple functions renamed and restructured for better maintainability
• New utility classes: Added file watching and monitoring classes for better file system integration
• Improved type safety: Better TypeScript/schema definitions for settings validation