# Claude Code v1.0.23

> Claude Code v1.0.23, released 13 Jun 2025 (2025-06-13). 5 entries read out of the shipped bundle. Unofficial, and not affiliated with Anthropic.

Web version: https://changelogs.core-directive.com/v/1.0.23

## Changes

### New Features

🆕 Add Directory Command (`/add-dir`)

A new command has been added to dynamically add working directories during your session:

`/add-dir <path>` **Usage Examples:**

- `/add-dir ../my-project` - Adds a relative path as a working directory
- `/add-dir /home/user/projects` - Adds an absolute path as a working directory

**Features:**

- Validates that the path exists and is a directory
- Prevents adding directories that are already accessible within existing working directories
- Provides helpful error messages if you accidentally specify a file instead of a directory

Enhanced MCP Server Management UI

The MCP (Model Context Protocol) server management interface has been completely redesigned with improved visual indicators:

- **Connection Status Icons**:
- ✓ Connected (green checkmark)
- ○ Connecting... (gray radio button)
- ▲ Disconnected/Needs authentication (yellow warning triangle)
- ✗ Failed (red cross)

- **Server Capabilities Display**: Shows available capabilities (tools, resources, prompts) for each server

- **Streamlined Authentication Flow**:
- Automatic authentication prompts when needed
- Re-authentication and clear authentication options
- Better error handling and status feedback

### Improvements

Native Binary Installation

- Switched from npm-based installation to direct binary downloads from Google Cloud Storage
- Improved platform detection supporting Windows (x64), macOS (x64/arm64), and Linux (x64/arm64)
- Added checksum verification for downloaded binaries
- More reliable update mechanism with atomic symlink updates

File Reading Enhancements

- New token-based limits for file reading with clearer error messages
- `MaxFileReadTokenExceededError` class provides specific token count information
- Better handling of large files with more informative error messages suggesting use of offset/limit parameters

Hook System Extensions

- Added new hook types: `PreToolUse`, `PostToolUse`, and `Notification`
- Improved hook matching and filtering capabilities
- Better integration with MCP tool filtering

### Technical Changes

- Added `fine-grained-tool-streaming-2025-05-14` feature flag
- Improved stream handling with `PassThrough` streams
- Enhanced caching mechanisms for MCP client connections
- Better error handling for architecture-specific installations
- Removed legacy migration code for home directory configurations

### Bug Fixes

- Fixed symlink creation issues with atomic operations to prevent corruption
- Improved error handling for unsupported architectures
- Better cleanup of temporary files during installation
- Enhanced validation for directory operations

### Breaking Changes

- The native installer no longer uses npm packages (`@anthropic-ai/claude-cli-native-*`)
- Direct binary downloads are now used instead, which may affect custom installation scripts