Agent Identity Standards: Still the Approved Agent?

Four new agent identity standards are now available in production, but they don't fully address the challenge of ensuring an agent's behavior matches its approved identity. Microsoft's Entra Agent ID, the Linux Foundation's Agent Name Service, DNS-AID, and Cisco's AGNTCY all agree that agents need their own identities. However, these standards primarily confirm "who" an agent is, not whether its behavior has changed. For example, the Agent Name Service, or ANS, focuses on foundational identity. It registers details like hostname, version, and declared functions. But if an agent's underlying model or system prompt changes, the registration remains the same. The standard suggests a version bump for code changes, but this is triggered by the hosting platform and only validates domain control, not internal modifications. This means that while these new standards provide a necessary layer of identity, they don't monitor an agent's runtime integrity or behavioral changes. The concern is that organizations might adopt these foundational identity solutions and mistakenly believe they've also solved the problem of behavioral verification. This gap means an agent could significantly alter its actions without detection, even with a valid identity.