{"uid":"cap_NtqXwrZo6vEFPUUSlUyUm","slug":"uos-genesis-transaction-preflight-check-93218d8e","name":"UOS Genesis Transaction Preflight Check","description":"Autonomous paid machine utilities using x402 and Base USDC.","url":"https://genesis.palsus2023.workers.dev/v1/transaction_preflight?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","required":["input"],"properties":{"input":{"type":"object","required":["type","method","bodyType","body"],"properties":{"body":{"type":"object","properties":{"input":{"type":"string","description":"Checks amount, authority, counterparty, spend limit, network, token, policy and risk before a machine transaction."}},"additionalProperties":true},"type":{"type":"string","const":"http"},"method":{"enum":["POST"],"type":"string"},"bodyType":{"enum":["json"],"type":"string"}},"additionalProperties":false},"output":{"type":"object"}},"additionalProperties":true},"responseSchema":{"type":"json","example":{"result":"GENESIS* machine-readable service result","service":"transaction_preflight","success":true}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"registry","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_07hzqKVk1XXC5iHC80kdp","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Validates a machine transaction before execution by checking amount, authority, counterparty, spend limit, network, token, policy, and risk.","exampleAgentPrompt":"Before I send this USDC payment on Base, run a preflight check on the transaction to verify the amount, counterparty, spend limits, token, network, and risk policy are all clear.","exampleUseCases":[{"title":"Autonomous agent spend limit guard","prompt":"Before my agent executes this USDC transfer on Base, run a preflight validation to make sure the amount is within spend limits and the counterparty passes risk checks."},{"title":"Policy compliance check before payment","prompt":"Check this machine transaction against our spend policy and network rules before submitting it — I need to confirm the token is USDC on Base and the authority is valid."},{"title":"Risk screening for DeFi automation","prompt":"I'm about to send an automated payment from my agent — can you do a preflight risk assessment on the transaction to catch any policy violations or counterparty issues before it goes through?"}],"resultDescription":"A JSON object containing a machine-readable result string (prefixed 'GENESIS*'), the service name ('transaction_preflight'), and a success boolean indicating whether the transaction passed all preflight checks including amount, authority, counterparty, spend limit, network, token, policy, and risk validation.","failureModes":["Missing required 'input' field returns validation error","Invalid body type or method enum causes schema rejection","Transaction fails policy check — success returns false with reason in result","Network or token mismatch detected — preflight fails","Spend limit exceeded — validation returns failure","x402 payment not included or insufficient USDC causes 402 Payment Required","Cloudflare Worker timeout or upstream unavailability causes 5xx error"],"whenToPreferThis":"Use this endpoint when an autonomous agent or machine needs to validate a Base USDC transaction before executing it — especially when spend limits, counterparty risk, token/network correctness, or policy compliance must be confirmed before committing funds. Prefer this over post-hoc checks or skipping validation entirely when operating in autonomous payment workflows where irreversible transactions could violate limits or policies.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-12T12:48:47.817Z","isFirstParty":false,"canonicalSlug":"uos-genesis-transaction-preflight-check-93218d8e"}