Serving 20 households: an agent architecture that treats the model as untrusted input
chopinpeppers · reddit · 2026-10-12
The author shares the isolation architecture of Nellie, a household AI agent product serving 20 homes: no inbound internet connections on the agent box, kernel-level isolation between accounts, and designing the harness/toolset assuming the model itself is untrusted input rather than relying on prompting.
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