Pre-filter, Classify, Triage: A Three-Stage Funnel for Token Budget
A cheap classifier should pay for the expensive investigator. Three stages — deterministic pre-filter, lightweight classify, full triage — let the cost shape match the value shape on a queue of mixed-value events. Spend tokens where the work is. The easy way to build an agent on a queue is one prompt that does everything: receive an event, decide if it matters, pull the data, write the response. One prompt, one model call, simple to ship. ...