Claude Code v1.0.11

# Claude Code v1.0.11 Changelog

• Interactive MCP authentication flow: The /mcp command now provides an interactive interface for authenticating with MCP servers that support OAuth
• Navigate through MCP servers using arrow keys
• Press Enter to manage authentication for SSE-type servers
• Options to authenticate, re-authenticate, or clear existing authentication
• Example: Run /mcp, use arrow keys to select a server, press Enter to authenticate

• Added /upgrade command for Max subscription enrollment
• Automatically opens the upgrade page in your browser
• Streamlines the login process after upgrading
• Example: /upgrade - Opens claude.ai/upgrade/max and prompts for login

• Multi-source authentication detection: Better handling of authentication conflicts
• Detects when multiple authentication methods are configured (e.g., ANTHROPIC_AUTH_TOKEN vs claude.ai login)
• Shows clear warnings about which authentication source is being used
• Provides instructions for resolving conflicts

• Personalized subscription suggestions: Claude Code now shows targeted subscription recommendations based on your organization's settings
• Recommendations for Pro, Max 5x ($100/mo), and Max 20x ($200/mo) plans
• Smart display logic that limits how often recommendations are shown
• Example output:

    With the $100/mo Max plan, use Sonnet 4 as your daily driver with predictable pricing. • /upgrade to sign up

• File reading cache: Implemented a smart caching system for file reads
• Caches up to 1000 files with automatic eviction
• Tracks file modification times to ensure cache validity
• Significantly improves performance when repeatedly accessing the same files

• Improved WSL host detection: Better support for Windows Subsystem for Linux environments
• Automatically detects the correct host IP in WSL environments
• Falls back gracefully when detection fails
• Respects CLAUDE_CODE_IDE_HOST_OVERRIDE environment variable

• Dynamic port allocation: OAuth authentication now uses dynamic port allocation
• Tries random ports in the 45000-45999 range
• Falls back to port 45123 if needed
• Prevents port conflicts during authentication

• Claude Pro users are now restricted from using Opus 4 models in Claude Code
• Attempting to set model to Opus 4 will show:

  Invalid model. Claude Pro users are not currently able to use Opus 4 in Claude Code. The current model is now Sonnet 4.

• This encourages Pro users to upgrade to Max plans for Opus 4 access

• More specific error messages for API key issues
• Differentiates between external API key errors and managed API key errors
• Example: "Invalid API key · Fix external API key" vs "Invalid API key · Fix managed API key"

• New system message formatting for better visibility
• Improved notebook cell editing rejection messages with syntax highlighting
• Enhanced MCP server status display with color-coded connection states

• Fixed duplicate imports and variable declarations
• Removed obsolete telemetry functions
• Cleaned up unused authentication state management code
• Improved error handling in OAuth token revocation

• Migrated from synchronous to asynchronous file reading patterns
• Improved module organization with better separation of concerns
• Enhanced TypeScript/JavaScript interoperability
• Better handling of Node.js stream APIs