Loop/Prompt Library / Business, marketing & money
🔁 Thumbnail tournament
Makes ten thumbnail ideas, scores the top three, and keeps improving the best one, without misleading viewers.
Use it when: Your video is ready but the thumbnail needs a few rounds of ideas and critique.
🛑 Stops when: One honest thumbnail clears your quality score, or the budget runs out.
Copy this loop
For [video], use only [approved images and assets] to make [10] thumbnail ideas. Score each at real YouTube sizes against [a channel I admire] on clarity, curiosity, emotion, contrast, and honesty. Take the top three and improve each one's weakest score. Re-score with the same rules. Keep improving the leader until it scores [target] or after [5] rounds. Throw out anything the video does not deliver. Show the winner, two runners-up, and their scores.
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 @Alex_FF. Prompt rewritten in plain English by FixKit AI.
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