How it works
What goes in and what comes out
You give your name or brand and a few interests; you can rule out digits. An AI model (Llama 3.1 8B, run on Cloudflare Workers AI) writes five different Substack handles. Each draft has its own copy button, and "Write new drafts" asks again with the same brief.
The prompt describes how people write on Substack: Short and pronounceable; it is also used in your publication's address.
Substack's rules
A Substack handle must be kept to lowercase letters and numbers, so it also works as a web address.
Every suggestion is cleaned before you see it: accents are folded to plain letters (so Vietnamese names work), spaces become the separator the rules allow, characters the platform refuses are dropped, and anything that still breaks the rules is thrown away.




