About G-Rump

G-Rump started as a hackathon build and grew into a conviction: a coding agent should be a first-class Mac citizen with a memory, not a process in a terminal. It’s roughly 62,000 lines of Swift — the agent loop, tools, memory, learning loop, and safety gates that let a language model do real work on a real machine.

It’s built and maintained by James Walton, a builder from Mississippi who came to software from construction — which might explain the emphasis on harnesses, load paths, and not trusting anything you haven’t inspected.

Why grumpy? Because relentlessly cheerful assistants agree with bad ideas. G-Rump’s default persona has opinions about your code — defined in a SOUL.md you can edit, so it’s exactly as grumpy as you want it to be.

The app is free and MIT-licensed. There’s no company behind it to answer to, no telemetry, and no backend — just the repository.