Securing Production AI Agents: A Guide to Enterprise Authorization at Scale

As AI agents scale from single-user prototypes to enterprise systems supporting thousands of concurrent users, authorization failures become critical security risks. Prompt injection and confused deputy attacks can weaponize agents with inherited access, making proper delegated authorization essential. This guide provides the technical framework for securing multi-user AI systems using OAuth 2.1, OIDC, and correct identity intersection patterns to ensure every agent action is bound to legitimate user access.