{"uid":"cap_KeKzIMBJU3i_ATHrMI5eK","slug":"agent-payment-guard-x402-server-trust-assessment-e902c36d","name":"Agent Payment Guard — x402 Server Trust Assessment","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/server-trust","method":"GET","headers":{},"bodySchema":null,"responseSchema":{"type":"json","example":{"network":"eip155:8453","product":"x402-server-trust","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_PvSmrxfdJkscqzUcexeso","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":"Returns a risk score, risk level, and flags for a given x402 payment server URL to help AI agents decide whether to trust and pay it.","exampleAgentPrompt":"Before my agent pays, can you check the trust and risk score for the x402 server at https://api.example.com — the marketplace says it has 150 transactions, 40 unique buyers, 12000.50 USDC volume, it's on Base, and the last payment was seen 2 hours ago?","exampleUseCases":[{"title":"Pre-payment fraud screen for agent","prompt":"My AI agent is about to autonomously pay an x402 server at https://data.somevendor.io — before it sends any USDC, can you run a trust and risk check on that URL? The seller address is 0xabc123, it's on Base, and the listing claims about 80 transactions and 5000 USDC in volume."},{"title":"Dataset purchase risk assessment","prompt":"I found an x402-gated dataset at https://datasets.researchprovider.com/climate-data that my agent wants to buy for 25 USDC on Base. Can you do a preflight risk assessment on that payment server before I let my agent proceed — I want to know the risk score, risk level, and any red flags?"},{"title":"Batch screen multiple x402 endpoints","prompt":"My agent is comparing three x402 API tools to purchase and I want to screen them for fraud before it commits. Can you check the trust score for https://tools.providerA.com/summarize — it's on Base, the seller address is 0xdef456, and the marketplace shows 12 transactions and 300 USDC volume so far?"}],"resultDescription":"A JSON object containing the network (e.g. eip155:8453), product identifier ('x402-server-trust'), and an assessment object with risk_score (numeric), risk_level (e.g. 'low', 'medium', 'high'), and a flags array listing any detected risk signals, plus optional activity, identity, and provenance objects.","failureModes":["Missing required server_url parameter returns a validation error","Invalid seller address format (not 0x + 40 hex chars) causes a 400 error","Unreachable or unknown server_url may return a higher risk_score or empty provenance","Rate limiting or quota exhaustion returns a 429 or payment-required response","Malformed numeric query params (txns, buyers, volume_usdc) fail schema validation"],"whenToPreferThis":"Use this endpoint when an AI agent is about to make an autonomous x402 payment and needs a pre-flight risk assessment of the target server. Prefer this over generic URL reputation services because it is x402-protocol-aware, understands seller addresses, on-chain transaction counts, and USDC volume signals specific to the x402 ecosystem.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T00:48:02.032Z","isFirstParty":false}