Loop/Prompt Library / Loops from builders on X
🔁 Test one change on a few users first
Pick a number you want to improve. The AI proposes a change, turns it on for a small slice of users, and only widens it if the numbers hold up.
Use it when: You want to improve something like sign-ups, but don't want to risk everyone on an untested idea.
🛑 Stops when: The change wins and is widened after your OK, or it's turned off.
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Goal: improve [number, e.g. sign-ups] by [amount]. Propose [1] change and why it might help. Build it behind an on/off switch (feature flag) on a new branch, with tests. After I approve, turn it on for [10]% of users for [7] days. Track the goal number and the error rate for both groups. If the change group is clearly better and errors didn't rise, recommend widening it; I decide. If it's worse or errors rose, turn it off and tell me. Never widen past [10]% without my yes. Stop after one experiment.
Review every change the agent makes before you keep it. Set a budget or round limit — the prompt includes one.
Found on X · by @Marwan_3atef. Prompt rewritten in plain English by FixKit AI.
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