decost takes apart the one-line agent bill

Field notes

The proposed workflow places decost between developer tools and model providers inside the customer’s VPC. It reconstructs unit costs from provider billing data and session logs, then measures policy changes against a baseline rather than waiting 30 days. The page illustrates four detectors—model choice, cache expiry, MCP schemas, and repeated context—with a modeled $15,850 monthly recovery from $100,000 in spend. Those figures are explicitly presented as examples until real traffic is connected.