Nexus is an intelligent, terminal-based Linux assistant that combines multiple AI models, memory systems, and automation capabilities to help you manage your system, browse the web, and execute complex tasks through natural language. This innovative tool features a Multi-Brain AI Architecture with specialized models for routing, chat, browser, and search tasks. It offers Autonomous Web Browsing for automated tasks, Persistent Memory through Supermemory, and Self-Healing Execution to auto-fix failed commands with dual-stage healing and auto-failover across five LLM providers. Nexus also provides File Analysis & Summarization to read, summarize, explain, and analyze local files, and Smart Context Condensation for large context summarization. Security is a priority with features like AST validation, path allowlists, and FTP credential blocking. The tool supports Ephemeral Azure Sandboxing for untrusted commands and offers Runtime Settings to switch models, update API keys, and inspect system state. With 198 automated tests, Nexus ensures robust performance and reliability.