Your format. Your tone. Your theme. Your weird rules. Herbie's chaos.
Pick a preset or type your own. Herbie will follow the conventions of whatever format you choose.
What is this piece about? Give Herbie the plot, subject, characters, setting, or general direction. More detail = more specific results.
Leave blank for Herbie's natural chaotic ALL-CAPS voice. Or describe a specific tone — be as weird as you want.
The wildcard field. Add any creative constraint, rule, or modifier you can imagine. These override everything else.