Claude Code v1.0.28

Model Selection Command Menu

• Added new interactive model selection functionality that allows users to switch between different Claude models during a session
• When invoked, users can navigate through available models and select their preferred model
• Includes keyboard shortcuts: ESC key to cancel and keep current model
• The selected model is displayed in bold text for clarity
• Example usage: The menu will show available models and allow selection via arrow keys

Enhanced MCP (Model Context Protocol) Support

• Added MAX_MCP_OUTPUT_TOKENS environment variable to control the maximum tokens for MCP output
• Default value: 25,000 tokens (configurable via environment variable)
• Example: export MAX_MCP_OUTPUT_TOKENS=50000 to increase the limit

Improved Resume Command

• Refactored the resume command to use a more robust component-based architecture
• Better error handling when loading conversations
• Async loading with proper state management
• Shows loading state while fetching conversations
• Filters out sidechain conversations automatically

Image Processing Enhancements

• Added new TG5 function for more robust image file handling
• Improved error recovery when image processing fails
• Better support for empty image files with specific error messages
• Maintains original media type when fallback processing is used

Configuration Directory Resolution

• Enhanced config directory resolution to respect XDG Base Directory specification
• Priority order:

1. CLAUDE_CONFIG_DIR environment variable (if set)
2. XDG_CONFIG_HOME/claude (if XDG_CONFIG_HOME is set)
3. Default: ~/.claude

• Example: export XDG_CONFIG_HOME=/custom/config will use /custom/config/claude

Multi-Edit Operations

• Added iK1 function to properly handle edit operations with default values
• Ensures replace_all parameter defaults to false when not specified
• Improves consistency in batch edit operations

Better Environment Variable Handling

• More defensive checks for CLAUDE_CODE_ENTRYPOINT to prevent duplicate assignments
• Cleaner initialization in both CLI and MCP modes

Error Handling

• Added AH1 (FallbackTriggeredError) class for better model fallback error reporting
• Includes original and fallback model information in error messages

Process Management

• Changed from hardcoded /bin/bash paths to more portable process execution
• Better support for different shell environments

Metrics and Telemetry

• Added terminal type tracking in metrics (terminal.type attribute)
• Helps understand user environments for better support

• Fixed duplicate import issues with stream modules
• Removed redundant process import
• Improved native installation detection logic
• Better handling of thinking tokens with configurable defaults

• Updated version number to 1.0.28
• Refined internal function naming and structure
• Improved code organization with better separation of concerns
• Enhanced type safety with new schema definitions for tool responses

Note: This version maintains 99.8% structural similarity with v1.0.27, ensuring stability while adding targeted improvements.