The Agent Security Stack: Transport, Identity, Policy, Runtime
This article breaks down AI agent security into four layers: transport, identity and delegation, policy, and runtime behavior. It argues that agent security is not a single problem but a set of questions answered at different layers. The identity layer is currently the most underbuilt, while the protocol layer is evolving rapidly. The piece also discusses MCP, A2A, and various emerging specs.
The Agent Security Stack: Transport, Identity, Policy, Runtime
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