Intercept and authorize outgoing machine-to-machine payments (x402 or similar) using @valiron/sdk trust decisions on the counterparty agent before payment execution. Use when implementing payment middleware, wallet spend guards, policy engines, trust-based allow/deny/throttle decisions, fail-open/fail-closed behavior, and auditable transaction risk controls.

在支付执行前，使用 @valiron/sdk 的信任决策对交易对手代理进行拦截和授权出站机器对机器支付（x402 或类似）。适用于实现支付中间件、钱包支出防护、策略引擎、基于信任的允许/拒绝/限流决策、故障开放/故障关闭行为以及可审计的交易风险控制。