{"endpoint":"/api/v1/paid/b402-preflight","price":"$0.01","description":"Free schema documentation for B402 preflight; POST requests are paid.","schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","type":"object","additionalProperties":false,"properties":{"payer":{"type":"string","pattern":"^0x[0-9a-fA-F]{40}$"},"recipient":{"type":"string","pattern":"^0x[0-9a-fA-F]{40}$"},"asset":{"type":"string","description":"native/BNB or a BEP-20 contract address"},"amount":{"type":"string","pattern":"^[0-9]+(?:\\.[0-9]+)?$"},"chain":{"type":"string","enum":["bnb","bnb-smart-chain","eip155:56","56"]},"deadline":{"type":["string","integer"],"description":"ISO-8601 timestamp or Unix seconds"},"fee_cap":{"type":"string","pattern":"^[0-9]+(?:\\.[0-9]+)?$","description":"Maximum network fee in BNB"},"intent_id":{"type":"string","minLength":1,"maxLength":128}},"required":["payer","recipient","asset","amount","chain","deadline","fee_cap","intent_id"]}}