{"uid":"cap_1nYvsenQdEqtXz4ZB6qi2","slug":"arakel-machine-evidence-network-counterparty-evidence-fea3e6aa","name":"ARAKEL Machine Evidence Network – Counterparty Evidence","description":"Machine-verifiable official-source evidence with free preflight and x402 USDC payments on Base.","url":"https://proof.arakelproof.space/v1/machine/counterparty-evidence","method":"HEAD","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":["HEAD"],"type":"string"},"queryParams":{"type":"object","required":["entity","from","to"],"properties":{"to":{"type":"string","format":"date-time"},"from":{"type":"string","format":"date-time"},"term":{"type":"string"},"entity":{"type":"string"}}}},"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.counterparty-evidence.v1","signature":{"alg":"Ed25519"}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.1","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":"$0.1/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.1","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.1","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_27LZEXg95yPEsyhZ_33Tp","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.1","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns cryptographically signed machine-readable evidence (OBSERVED, NOT_OBSERVED, or INCONCLUSIVE) for a named entity over a specified time window, sourced from official records.","exampleAgentPrompt":"Can you pull a signed machine evidence check on 'Acme Logistics LLC' from ARAKEL's counterparty dossier for the period January 1 2024 to June 30 2024, and tell me whether they show up as OBSERVED or NOT_OBSERVED in official sources?","exampleUseCases":[{"title":"Pre-deal counterparty due diligence","prompt":"Before we sign this vendor contract, can you check if 'GlobalTrade Partners Inc' appears in any official records from 2023-01-01 to 2024-12-31 and get me a signed attestation of the result?"},{"title":"Compliance NOT_OBSERVED proof","prompt":"I need a cryptographically signed proof that 'Nexus Capital SRL' was NOT observed in any official sources between 2022-06-01 and 2023-06-01 — get that from ARAKEL so I can attach it to our compliance file."},{"title":"Sanctions or registry spot check","prompt":"Run a quick machine evidence check on the entity 'Redwood Freight Ltd' for Q3 2024 — I want to know if they show up as OBSERVED in official records and get back a signed result I can log."}],"resultDescription":"A JSON response containing a 'result' field with one of OBSERVED, NOT_OBSERVED, or INCONCLUSIVE; a schema identifier ('arakel.counterparty-evidence.v1'); and an Ed25519 cryptographic signature attesting to the result's authenticity. The signed proof can be stored or presented as machine-verifiable evidence.","failureModes":["Missing required query parameters (entity, from, to) returns a 400-level error","Entity string not recognized in enabled official sources returns INCONCLUSIVE","Date range outside available data coverage returns INCONCLUSIVE or error","Payment not included or insufficient (x402 protocol) results in 402 Payment Required","Service unavailability from upstream official sources may delay or block response"],"whenToPreferThis":"Choose this endpoint when you need a cryptographically signed, machine-readable attestation (including NOT_OBSERVED proofs) about a named counterparty from official sources — especially for compliance workflows, due diligence audits, or automated agent pipelines that require verifiable evidence rather than a human-readable report. Prefer this over generic web searches or unverified lookups when legal or regulatory defensibility of the evidence matters.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T18:44:29.852Z","isFirstParty":false}