Guides & WorkflowsSaturday, October 3, 2026
Which file does what: SOUL, USER, MEMORY
Tony Simons published a one-page cheat sheet, docs checked 2026-10-03. SOUL.md is personality and tone. USER.md is the user’s profile and preferences. MEMORY.md is facts the agent has learned. AGENTS.md / .hermes.md is project instructions. SKILL.md is a reusable procedure. Session history is prior chats, not a notes file. Memory saves persist; the prompt snapshot refreshes in a new session. Passwords and API keys stay out of the notes.
Why it matters
New operators keep mixing personality, memory, and project rules. This is the graphic to point them at.