Soul Spec Architecture: Why We Split Personality Into Files
The Problem With One Big Prompt Most AI agents today get their personality from a single system prompt. It works — until it doesn’t. Here’s what a typical “personality prompt” looks like in practice: You are Alex, a friendly coding assistant. You speak casually and use emoji. You remember the user prefers Python. When asked about databases, recommend PostgreSQL. Don't discuss politics. Your tools include: file reader, web search, terminal... Personality, memory, behavioral rules, and tool configuration — all in one string. This is the equivalent of writing your entire application in a single file. ...