Your agent calls tools on behalf of users. How do you design its identity, credentials, and authorization?
An agent running on a single over-privileged service account is a confused deputy waiting to happen. The signal is per-user delegated credentials, token exchange, per-tool scopes, and an audit trail that names the human. Here is the answer.
Updated Sep 2026 · Grounded in real GenAI, LLM, and AI/ML engineering interview loops and written to a senior-engineer editorial bar.
An agent running on a single over-privileged service account is a confused deputy waiting to happen. The signal is per-user delegated credentials, token exchange, per-tool scopes, and an audit trail that names the human. Here is the answer.
Lead with where the obvious approach breaks, because that is the judgment they are screening for — most candidates jump straight to the happy path and lose the room.
Then walk the failure back through the pipeline in order, naming the one metric the customer's exec sponsor actually cares about before you propose the fix.
