Runs one decision node's rule on the numbers you send and returns the computed figures, a verdict, the actions in order, the check to keep and the node text with its citations. Deterministic: the result comes from the published rule, not from a model. Costs the decision's catalogue price ($0.05, USDC on Base over x402); the input is checked first, and an input the rule cannot use is refused without charge. Call it when the user has the figures for a specific decision in a business under about $50M in revenue and wants the rule's answer for them; get the schema from bf_decision_schema first. Do not call it with invented or placeholder figures, and do not treat the verdict as tax, legal or investment advice.