{"uid":"cap_qazxDk1F5Y-oiTj9c7cjy","slug":"arakel-interval-proof-certificate-33daba7a","name":"Arakel Interval Proof Certificate","description":"Machine-verifiable official-source evidence with free preflight and x402 USDC payments on Base.","url":"https://proof.arakelproof.space/v1/certificate","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":["term","from","to"],"properties":{"to":{"type":"string","format":"date-time","description":"UTC interval end"},"from":{"type":"string","format":"date-time","description":"UTC interval start"},"term":{"type":"string","description":"Federal Register event or search term"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"detail":"certificate","result":"OBSERVED|NOT_OBSERVED|INCONCLUSIVE","schema":"arakel.intervalproof.v1","source":{"id":"federal-register"},"coverage":{"sufficient":true},"signature":{"alg":"Ed25519"}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.05","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":"$0.05/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_lLYE2_VWSTWRaV-lRis7d","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.05","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Generates a signed, machine-verifiable interval proof certificate for a given time range or numeric interval","exampleAgentPrompt":"Generate a signed machine-verifiable interval proof certificate for the range January 1 2025 to June 30 2025 with my subject ID 'user-42'.","exampleUseCases":[{"title":"Audit trail for scheduled job window","prompt":"I need a signed, machine-verifiable certificate proving that a process ran within the time window March 1 to March 31 2025 — can you generate that interval proof for me with subject ID 'batch-job-1234'?"},{"title":"Numeric range compliance attestation","prompt":"Create a cryptographic interval proof certificate showing that a value falls between 100 and 500 for my compliance record tagged 'compliance-check-99'."},{"title":"Time-bounded access credential","prompt":"Issue a signed interval certificate covering the dates 2025-07-01 through 2025-09-30 for entity 'contractor-7' so we can verify their access window was legitimate."}],"resultDescription":"A signed, machine-verifiable interval proof certificate returned as a structured document. The certificate cryptographically attests that a subject or value falls within a declared interval, and is designed to be verified programmatically by downstream systems without requiring trust in a third party.","failureModes":["Invalid or malformed interval bounds — returns 400 with validation error","Missing required subject or interval parameters — returns 400","Payment not received or insufficient — returns 402","Internal signing failure — returns 500","Interval start is after interval end — returns validation error"],"whenToPreferThis":"Choose this endpoint when you need a cryptographically signed, tamper-proof certificate proving that a value, event, or entity falls within a specific numeric or time interval. It is particularly suited for compliance workflows, audit trails, or access control systems that require machine-verifiable proof without relying on a centralized trusted authority.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T06:51:13.668Z","isFirstParty":false}