{"name":"Blackwall","description":"Deterministic pre-signature x402 payment guardrail: returns a GO / HOLD / STOP verdict before an agent signs a payment. No model in the verdict path -- every gate is an auditable, mutation-tested check over counterparty reputation, price anomaly, Sybil structure, sanctions, and simulation of the payment itself.","x402Version":2,"category":"payment-risk","method":"deterministic","modelInVerdictPath":false,"tags":["x402","payments","risk","reputation","agent-guardrail","base","usdc","deterministic","pre-signature","keyless"],"signals":["sanctions-ofac","counterparty-reputation","price-anomaly","sybil-structure","payload-simulation","permit2-allowance","calldata-drainer","secret-exfiltration","payee-syntax","evidence-confidence"],"screening":["sanctions-ofac"],"resources":[{"method":"POST","path":"/v1/forecast-payment","description":"Forecast a payment: GO / HOLD / STOP + signed receipt.","input":{"type":"object","required":["counterparty","amount","asset","chain"],"properties":{"counterparty":{"type":"string"},"amount":{"type":"string"},"asset":{"type":"string"},"chain":{"type":"string"},"payer":{"type":"string"},"resource":{"type":"string"}}},"outputVerdicts":["GO","HOLD","STOP"],"accepts":[{"scheme":"exact","network":"eip155:8453","amount":"1000","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","payTo":"0x9B901C313b846B415c76963F8FFDf62B7A83521d"}]}],"mcp":{"transport":"stdio","tool":"forecast_payment"},"custody":false}