argparse

A practical, Linux-first guide to building Python AI CLI tools that feel like grep: scaffold a clean ai-cli package with a console entry point, wire it to OpenAI or local Ollama, and make it pipe-friendly with stdin, streaming, caching, and sane exit codes. Covers install via apt/dnf/zypper and pipx, env-based backend/model switching, real commands (summarize, ask, commit), plus packaging, secrets, timeouts, and ideas to extend (review, explain, changelog).