Agent identity
Also written: AI identity
How AI programs prove who they are when they interact with systems or other AI.
Agent identity is how an AI program proves it is who it says it is. Think of it like a digital ID card for AI. When an AI needs to access information or perform an action, it needs to show its ID to prove it has permission.
For example, imagine a customer service AI. It needs to access a customer's order history. To do this, it must present its agent identity to the order system. The system checks the ID, and if it's valid, it lets the AI see the order details. Without a proper identity, the AI would be denied access.
Agent identity refers to the unique, verifiable credentials that an autonomous AI system possesses to authenticate itself within a digital environment. This allows systems to grant or deny access to resources and actions based on the AI's role and permissions. It is crucial for secure and controlled interactions between AI agents and other services or AI entities, enabling auditable operations and preventing unauthorized access or impersonation.
Agent identity is becoming more important as AI systems move beyond simple chatbots to more autonomous agents. These agents need to securely interact with each other and with existing systems, requiring robust methods for identification and authentication. Microsoft's mention of agent identity in the context of evolving authorization suggests a trend towards more sophisticated AI agent management.
- Evolution of MCP authMicrosoft · Microsoft Developer on YouTube ·
- Microsoft Copilot
- Microsoft Copilot is evolving its authorization methods and plans to incorporate agent identity as a key component for future interactions.
- User identity
- User identity refers to a human individual's authentication, wher
- Service account
- A service account is a type of identity for non-human users, of
- API key
- An API key is a simple token used for authentication, while agent ident
The concept of agent identity stems from the broader fields of computer security and identity management, adapted for autonomous AI systems. Specific implementations are emerging as AI agents become more sophisticated.
You can observe aspects of agent identity when using tools with AI assistants. For instance, when you ask Copilot to access your calendar, it's using an underlying identity mechanism to prove it has permission to view your schedule. Notice how it sometimes asks for re-authentication or confirmation before accessing sensitive data.
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Questions people ask
- Why do AI agents need an identity?
- AI agents need an identity to securely access resources and perform actions. It's like a digital ID that proves they are authorized and prevents unauthorized access or misuse.
- Is agent identity the same as a user account?
- No, agent identity is specifically for AI programs or systems, while a user account is for a human individual.
First seen on Subvolts Sep 10, 2026. Updated Sep 17, 2026. Written by an AI model from the items above and reviewed against them weekly; report an error.