{"uid":"cap_Jn6jZgbWsqwxJkOwZgMTX","slug":"signgate-x402-origin-due-diligence-04fe9af2","name":"SignGate x402 Origin Due Diligence","description":"Machine-payable service intelligence for discovering, verifying, and monitoring identity, risk, authorization, execution-preflight, and evidence APIs before autonomous agents spend.","url":"https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/x402/origin-due-diligence","method":"GET","headers":{},"bodySchema":null,"responseSchema":{"type":"json","example":{"network":"eip155:8453","product":"x402-origin-due-diligence","assessment":{"flags":[],"risk_level":"low","risk_score":0}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_hD_q3eqQM0_iDdxI3_pY_","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Performs a pre-purchase risk assessment on an x402 API or service endpoint, returning a risk score, risk level, and flags before an AI agent commits to buying it.","exampleAgentPrompt":"Before you pay for that x402 API at https://some-api.example.com, run a SignGate origin due diligence check on it and tell me the risk score and any flags so I can decide if it's safe to buy.","exampleUseCases":[{"title":"Pre-purchase check on unknown data API","prompt":"I found an x402 dataset API at https://data-provider.example.com — before you spend any money on it, can you run a risk assessment through SignGate and tell me the risk level and any flags?"},{"title":"Screening a new AI tool before agent autonomy","prompt":"My agent is about to buy access to https://tools.aimarket.xyz/sentiment-api — please do a preflight due diligence check first so I can confirm the risk score is low before authorizing the payment."},{"title":"Verifying seller wallet before bulk API purchases","prompt":"We're planning to use an x402 API from seller wallet 0xAbC1234567890abcdef1234567890abcdef123456 — run a SignGate origin due diligence check on https://api.example.com/v1/data and tell me if there are any red flags or a high risk score before we proceed."}],"resultDescription":"A JSON object containing the EIP-155 network identifier (e.g. eip155:8453), product name, a risk score (numeric), a risk level (e.g. 'low', 'medium', 'high'), an array of risk flags, plus identity, activity, assessment, and provenance sub-objects describing the x402 origin.","failureModes":["Invalid or unreachable server_url returns an error or empty assessment","Malformed seller address (not a valid 0x EVM address) causes a validation error","Unknown or unindexed x402 origin may return limited data with no activity or identity info","Network timeouts if the origin URL is slow to respond","Missing required server_url parameter returns a 400-level error"],"whenToPreferThis":"Use this endpoint when an AI agent needs to autonomously decide whether to purchase an x402-gated API, dataset, or tool and requires a governance checkpoint — especially when the seller or service is unknown, the price or sensitivity is above threshold, or your policy requires pre-approval before spending. Prefer this over generic URL reputation services because it is specifically designed for x402 on-chain payment contexts and returns x402-native signals like transaction count, buyer diversity, and seller wallet identity.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T18:48:56.049Z","isFirstParty":false}