agsh is a general-purpose AI agent runtime that provides Large Language
Models (LLMs) with tools like web search, shell execution, and file
editing to perform complex tasks.

Key features:
* Natural-language shell with four permission modes (none, read, ask, write)
* Session persistence via SQLite
* Support for Model Context Protocol (MCP) servers
* Support for multiple providers including OpenAI and Claude
* Syntax-highlighted output and adaptive thinking capabilities
* Built-in tools for file manipulation, web searching, and delegating
  tasks to sub-agents