# Claude Code v0.2.41

> Claude Code v0.2.41, released 14 Mar 2025 (2025-03-14). 5 entries read out of the shipped bundle. Unofficial, and not affiliated with Anthropic.

Web version: https://changelogs.core-directive.com/v/0.2.41

## Changes

### New Features

MCP (Model Context Protocol) Status Command

- **New command**: `/mcp` - Shows the connection status of all configured MCP servers
- Displays a formatted list of MCP servers with their connection states:
- **connected** (green) - Successfully connected to the server
- **connecting…** (yellow) - Connection in progress
- **failed** (red) - Connection failed
- Includes debug mode support with `--mcp-debug` flag for inline error logs
- Shows log file location for troubleshooting failed connections

Example output:

`MCP Server Status

• server1: connected
• server2: connecting…
• server3: failed

Run claude with --mcp-debug to see error logs inline, or view log files in: /path/to/logs`

### Improvements

Enhanced MCP Integration

- Improved MCP server connection handling with better error reporting
- Added connection timeout configuration (5 seconds default)
- MCP tools and prompts now have an `isMcp: true` property for better identification
- Better separation of MCP client state management

Logging Infrastructure

- New `baseLogs()` function added to the logging system for accessing the base log directory
- Enhanced MCP-specific logging with dedicated log files per server

Memory Management

- Added telemetry events for memory undo operations:
- `tengu_memory_undo_attempt` - Tracks when undo is attempted
- `tengu_memory_undo_success` - Tracks successful undo operations
- `tengu_memory_undo_failure` - Tracks failed undo operations

### Technical Changes

Refactored MCP Architecture

- Replaced monolithic MCP initialization with a more modular approach:
- New `cS1()` function for parallel MCP server connections
- New `zx2()` function for aggregating MCP resources
- New `Qx2()` React hook for managing MCP state in the UI
- Improved error handling with per-server error isolation
- Better separation of concerns between connection, tool discovery, and prompt discovery

Performance Optimizations

- Changed from SHA-256 web crypto API to Node.js native crypto module for hash operations
- More efficient stream handling with direct `Readable` imports
- Improved memoization for tool and command lists with new `gl2()` and `Ul2()` utility functions

Code Quality

- Better TypeScript/Zod schema validation for MCP server configurations
- Cleaner import organization and dependency management
- More consistent error messaging and logging patterns

### Bug Fixes

- Fixed potential race conditions in MCP server connection initialization
- Improved error handling for failed MCP server connections
- Better cleanup of timeouts in connection handling

### Breaking Changes

None - This release maintains backward compatibility with existing configurations and APIs.