Loop/Prompt Library / Testing & QA
🔁 Brand-new-computer setup test
Pretends to be a new developer: follows only the README on a clean machine and fixes every step that does not work.
Use it when: You want to know if someone new could set up your project without asking you for help.
🛑 Stops when: One fresh attempt, using only the README, reaches the ready state with no manual fixes.
Copy this loop
Copy [repository] into a brand-new, throwaway environment. Follow only the README until [ready state, e.g. 'the app runs at localhost']. When a step fails or assumes something not written down, note it, fix the README or setup, then throw the environment away and start over. Bring nothing from the last attempt. Stop when one clean run works start to finish, or after [5] attempts. Give me the exact commands and every gap you closed.
Review every change the agent makes before you keep it. Set a budget or round limit — the prompt includes one.
Idea from Forward Future's Loop Library · by 0xUmbra. Prompt rewritten in plain English by FixKit AI.
More loops like this
Full test coverage
Keeps adding useful tests until every line of code is tested.
Fix flaky tests
Finds tests that pass sometimes and fail other times, and fixes the real cause instead of just retrying.
Win-streak testing
Tests real-world scenarios one after another; any failure gets fixed and the streak starts over.
Test everything, end to end
Lists every screen, button, and workflow in the app, tests each one like a real user, fixes the bugs, and tests it all again.