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millstone

millstone is a Python CLI that orchestrates agentic coding tools in a deterministic builder-reviewer loop.

What it does

  • Runs tasks from a tasklist through build, sanity checks, and review.
  • Supports autonomous outer loops (analyze, design, plan, cycle).
  • Captures run logs and evaluation artifacts under .millstone/.

Install

pipx install millstone

Quick start

millstone --help
millstone
millstone --task "add input validation"

Operator Prompts

Paste one of these as a system prompt to let an AI agent drive millstone for you:

  • execute.md — run a tasklist to completion
  • design.md — turn an idea into a reviewed design + plan

→ Which prompt to use and how to invoke them

Learn more