{"uid":"cap_Ye0XAqIzVi0YXC6iIwLcA","slug":"arakel-machine-evidence-network-machine-check-a8c83a8b","name":"ARAKEL Machine Evidence Network - Machine Check","description":"Machine-verifiable official-source evidence with free preflight and x402 USDC payments on Base.","url":"https://proof.arakelproof.space/v1/machine/check","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":["source","from","to"],"properties":{"to":{"type":"string","format":"date-time"},"from":{"type":"string","format":"date-time"},"term":{"type":"string","description":"Optional search term"},"entity":{"type":"string","description":"Company, person, entity, ticker, CIK, recipient, or organization"},"source":{"enum":["federal-register","ofac","fda","usaspending"],"type":"string","description":"Currently enabled official source adapter"},"event_type":{"type":"string","description":"listing_present, listing_added, recall, award, publication, etc."}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"result":"OBSERVED|NOT_OBSERVED|INCONCLUSIVE","schema":"arakel.machine-evidence.v2","source":{"id":"ofac"},"signature":{"alg":"Ed25519"}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"$0.01/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_rVWmVlodcy_4I5WMIGP4C","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Checks an entity against official sources (e.g. OFAC) and returns a cryptographically signed OBSERVED/NOT_OBSERVED/INCONCLUSIVE evidence proof.","exampleAgentPrompt":"Can you run an ARAKEL machine evidence check on the entity 'Acme Trading LLC' to see if they appear on OFAC or other official watchlists, and get me a signed proof I can keep on file?","exampleUseCases":[{"title":"Pre-trade sanctions screening","prompt":"Before I send payment to wallet address 0xABCDEF1234567890, check it against OFAC and any other official sources and give me a signed NOT_OBSERVED proof if it's clean."},{"title":"Counterparty compliance dossier","prompt":"Pull together a full machine-evidence dossier on 'Petrov Exports Ltd' from all enabled official sources so I can decide whether it's safe to onboard them as a supplier."},{"title":"Automated KYC preflight check","prompt":"Run a quick preflight compliance check on the name 'Hassan Al-Rashidi' against official watchlists — I need to know if there are any hits before I proceed with the account opening."}],"resultDescription":"A JSON object containing a result field (OBSERVED, NOT_OBSERVED, or INCONCLUSIVE), the source that was queried (e.g. OFAC), a schema identifier (arakel.machine-evidence.v2), and a cryptographic Ed25519 signature attesting to the result, suitable for audit and compliance records.","failureModes":["Entity identifier not recognized or too ambiguous — returns INCONCLUSIVE","Queried source temporarily unavailable — may return error or INCONCLUSIVE","Invalid or missing entity parameter — returns 400-level error","Payment not provided or insufficient — request rejected before check runs","Rate limiting on batch checks if quota exceeded"],"whenToPreferThis":"Choose this endpoint when you need cryptographically signed, machine-verifiable compliance evidence (OBSERVED/NOT_OBSERVED/INCONCLUSIVE) from official sources such as OFAC, rather than a simple name-match lookup. It is particularly valuable when you need a signed proof artifact for audit trails, when you need NOT_OBSERVED proofs (not just positive hits), or when you want to screen counterparties across multiple official sources in one call. The tiered pricing ($0 preflight, $0.005 quick check, $0.01 full check) makes it cost-efficient to run at scale.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T18:41:45.214Z","isFirstParty":false}