Ralph
Bash loop that reruns a coding agent until every PRD story passes
What it is
A shell script and prompt templates that launch Amp or Claude Code over and over, each time in a fresh context, picking the next unfinished user story from a prd.json file, implementing it, running typechecks and tests, and committing on success. State carries between runs through git history, a progress log, and AGENTS.md notes. It also ships skills for drafting PRDs and converting them to the JSON task format. Developers who want an agent to work through a feature backlog unattended use it to break work into small stories and let the loop grind through them.