I've seen this called "agentic RAG" by some people. The easiest way to get a local demo is with Claude Code or Codex CLI. They know how to use grep, and you can

I've seen this called "agentic RAG" by some people. The easiest way to get a local demo is with Claude Code or Codex CLI. They know how to use grep, and you can set them loose on a folder full of text files and tell them to use grep to answer questions - it can work really well. I just tried this in "claude --dangerously-skip-permissions": > Use Python and AppleScript to find Apple Notes that mention UPS ... and fell down a rabbit hole of optimizations because my Notes collection is HUGE, but it got there in the end!