Claude Code v1.0.58

Agent Color Coding

• Agents now have color-coded identification in the interface
• New color palette: claude, success, bashBorder, planMode, autoAccept, warning, permission, error
• Color assignments persist per agent type for consistency
• The general-purpose agent remains uncolored

PDF File Support

• Added native PDF reading capability to the Read tool
• PDF files up to 32MB can now be processed directly
• PDF content is displayed visually as Claude Code is multimodal

Enhanced Permission Messages

• New DETAILED_PERMISSION_MESSAGES environment variable
• When enabled, provides more context about which specific commands are pre-approved
• Permission prompts now show reminders of allowed commands for each tool type

OAuth 2.0 Client Authentication

• Added comprehensive OAuth 2.0 client authentication support
• Supports multiple authentication methods:
• client_secret_basic (HTTP Basic Auth)
• client_secret_post (form-encoded)
• none (public clients)
• New error handling for OAuth flows with specific error types

Bash Command Prefix Support

• New CLAUDE_CODE_BASH_PREFIX environment variable
• Allows prefixing all bash commands with custom wrapper scripts
• Useful for sandboxing or monitoring command execution

Performance

• Added LRU cache support with configurable size limits
• New telemetry for tracking attachment computation duration
• Improved abort signal handling with configurable timeouts (default 50ms)

MCP Server Integration

• Better connection status reporting for MCP servers
• New JyB function provides clear connection status messages:
• "✓ Connected"
• "⚠ Needs authentication"
• "✗ Failed to connect"
• "✗ Connection error"

Telemetry Enhancements

• Added tracking for non-interactive sessions
• New print mode detection in API success metrics
• TTY detection for better usage analytics

Tool Permission Context

• New I1Q function to get tool-specific permission rules
• Enhanced G1Q function for generating contextual permission messages
• Permission rules now support content-specific messaging

Agent Management

• Agent color preferences stored in new agentColorMap
• Color index rotation for automatic assignment
• uz0 function for getting agent colors
• e31 function for setting custom agent colors

• Fixed duplicate code comments in some scenarios
• Improved error handling for OAuth token refresh flows
• Better cleanup of temporary shell execution files

• Removed several unused internal functions and variables
• Cleaned up deprecated OAuth implementation code
• Removed redundant file reading state management

• Version updated from 1.0.57 to 1.0.58
• Structural similarity remains high at 99.0%
• 76 additions, 19 deletions, 11 modifications across the codebase