Solving the Identity Crisis for AI Agents

This Uber Engineering blog describes how the company redesigned its identity and access management architecture to securely support production AI agents. Instead of treating agents as generic service accounts, Uber gives each agent a unique cryptographic identity, issues short-lived JWTs through a Security Token Service (STS), and propagates an actor chain that preserves the originating user and every intermediary agent involved in a workflow. The architecture leverages SPIFFE/SPIRE workload identities, scoped credentials, MCP-aware authorization, and end-to-end audit trails, enabling fine-grained access control, accountability, and secure delegation across multi-agent systems while reducing the risks of overprivileged agents and poor attribution. 

https://www.uber.com/us/en/blog/solving-the-agent-identity-crisis/

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