FixKit AI

Loop/Prompt Library / Running AI agents well

๐Ÿ” Fair-test experiments

Improves a prompt or piece of code through saved, fairly compared experiments that can pick up again later.

Use it when: You want to improve something over many sessions and keep the comparisons fair.

๐Ÿ›‘ Stops when: A clear winner within one fixed scoring setup, or no progress, or the budget is spent.

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Improve [prompt, code, or setting] toward [goal] within [budget]. Freeze the tests and scoring rules, save the current version as a checkpoint, and record a starting score. Each round, test one idea and keep it only if it clearly wins without breaking anything. If you change the scoring, start a new revision and re-score the baseline. Run at most [10] rounds. Ask before changing live files. Return the best checkpoint, scores, and how to roll back.

Review every change the agent makes before you keep it. Set a budget or round limit โ€” the prompt includes one.

Idea from Forward Future's Loop Library ยท by Agent Zero. Prompt rewritten in plain English by FixKit AI.

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Keeps the current best prompt as champion, and a new version only replaces it if it wins on fresh test cases it never saw.