New mcp_server.py provides 5 tools (get_recent_sessions, get_chat_history, search_messages, get_contacts, get_new_messages) via FastMCP stdio transport. Features on-demand decryption with mtime-based caching and WAL support.
Extract encryption keys from Weixin.exe process memory, decrypt all SQLCipher 4 databases, and monitor new messages via Web UI with ~100ms latency.