# Claude Code v1.0.11

> Claude Code v1.0.11, released 4 Jun 2025 (2025-06-04). 13 entries read out of the shipped bundle. Unofficial, and not affiliated with Anthropic.

Web version: https://changelogs.core-directive.com/v/1.0.11

## Changes

# Claude Code v1.0.11 Changelog

### Enhanced MCP OAuth Authentication

- **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

### New `/upgrade` Command

- 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

### Improved Authentication Handling

- **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

### Subscription Recommendations

- **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`

### Performance Enhancements

- **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

### WSL Networking Support

- **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

### OAuth Port Management

- **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

### Opus 4 Limitation for Claude Pro Users

- 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

### Enhanced Error Messages

- 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"

### Better Visual Feedback

- 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

## Bug Fixes

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

## Technical Changes

- 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