Designing Secure Caller Identity Authentication Flows For Voice Agents

Voice agents that modify accounts must not rely on LLM judgment to verify identity. This lays out five authentication patterns and workflow gating that keep privileged tools unreachable until a server-side check passes.

• LLM — A large language model — the neural network behind tools like Claude and ChatGPT, trained on huge amounts of text to predict what comes next.
• inference — Running a trained model to get answers — the phase where AI is actually used, as opposed to trained.

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