Mountain Theory

Mountain Theory is a runtime security control for AI agents that functions like antivirus software for agent behavior, an LLM Guardrails & AI Safety layer. It checks every action an AI agent takes before the action runs, evaluating it against rules written in plain English. Each action is then allowed, held for human review, or blocked. The rules need no signature updates. Every decision is logged for auditors. Mountain Theory works with any AI a company already uses, from coding agents such as Claude Code and OpenAI Codex to models hosted in the company's own environment or in the cloud.