Paste the instructions you keep for each assistant: AGENTS.md, CLAUDE.md, GEMINI.md, Cursor or Copilot rules, or the custom-instruction boxes from ChatGPT, Claude, Gemini or Grok. Rules they share become your main hat. The rest become a set per assistant that you load by name. Everything happens in this browser; nothing is sent until you save.
Read each line before saving: hats are public. Lines that look private (an email, a phone number, a dollar amount, a link) start unchecked, and credentials cannot be included. Names, employers and places cannot be detected automatically, so uncheck any you see.