Prefactor
Evaluate AI agents in real time, before they fail.
Prefactor is a real-time evaluation platform for AI agents. It monitors every step of an agent’s execution, measuring quality, risk, tool usage, cost, and potential failures as they happen. With TypeScript and Python SDKs plus integrations for LangChain, Claude, Vercel AI, OpenClaw, and LiveKit, teams can detect issues, enforce policies, and pause risky actions for human approval.