# Autonomous agents need guardrails, not line-by-line scripts > Source: > Published: 2026-09-18 00:10:25+00:00 Autonomous does not mean uncontrollable. Cogweald’s model can decide what happens next in a world. It cannot change the database schema, bypass authorization, arbitrarily rewrite published content, or turn unvalidated text directly into system state. The guardrails live outside the model: The model gets creative freedom. The system owns consistency. This is one of my favorite agent design principles: do not describe every rule in a prompt. If code can guarantee something reliably, let code guarantee it. Give the model the decisions that actually require semantic judgment.