Modeling a fraud-approval agent as a POMDP: approve, verify, or escalate under uncertainty

deepikaau · reddit · 2026-09-11

A developer is prototyping an agent that handles supplier bank-change requests, deciding between approving, verifying via a second channel, or escalating when it can't tell genuine intent from a compromised account. They model it loosely as a POMDP — hidden state = genuine vs. fraud; evidence signals include urgency language, first-time changes, and payment-history matches — and ask others who've built decision-under-uncertainty agents what broke first in real or simulated testing. A candid look at why fraud-approval is a cost-sensitive decision problem, not a clean classification task.

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