{"uid":"cap_-8lwt6uyjivu6n4bRZ02C","slug":"asiaref-certified-single-series-reference-data-e210137f","name":"AsiaRef Certified Single-Series Reference Data","description":"Japan: Consumption tax (standard rate), cited JSON with source URL, effective date and last_confirmed. GET /v1/jp/vat.","url":"https://asiaref.dev/v1/certified/:country/:series?utm_source=zero.xyz","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","properties":{},"additionalProperties":false}},"additionalProperties":false}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.1","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":"$0.1/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_vth5EA8ZYOXZ6iTvgflHl","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.1","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns a certified, Ed25519-signed extract of a specific Asian government reference data series (e.g. policy rate, VAT, CPI) for a given country, including value, citation, archived-source SHA-256, and verification chain.","exampleAgentPrompt":"What is the current corporate tax rate in Singapore? I need a certified answer with a source citation and verification chain I can trust.","exampleUseCases":[{"title":"Cross-border tax compliance check","prompt":"What's the current VAT rate in Thailand? I need a certified value with a source citation and SHA-256 archive hash so I can include it in a compliance report."},{"title":"Central bank rate for financial model","prompt":"Can you pull the central bank policy rate for South Korea with an Ed25519-signed certificate and citation so I can plug it into my financial model?"},{"title":"Payroll calculation for Indonesia","prompt":"What are the statutory social contributions rates in Indonesia? I need a verified government reference value with a provenance chain for our payroll system."}],"resultDescription":"A JSON object containing the official government reference value for the requested country and series, along with a full citation, an archived-source SHA-256 hash, a verification chain, and an Ed25519 signature attesting to the authenticity of the data.","failureModes":["Unsupported country code returns error (only 28 supported ISO codes accepted)","Unsupported series ID returns error (only 12 named series supported)","Payment not included or insufficient triggers 402 Payment Required (refuses without charge evidence)","Upstream government source temporarily unavailable may delay response","Invalid path parameters return 400 Bad Request"],"whenToPreferThis":"Choose this endpoint when you need a single, auditable, cryptographically certified government reference value for a specific Asian or Middle Eastern country — particularly in compliance, legal, financial, or regulatory contexts where provenance and non-repudiation matter. Prefer over generic web search or unverified data APIs when you need SHA-256 source archiving and Ed25519-signed outputs.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-22T12:31:18.230Z","isFirstParty":false,"canonicalSlug":"asiaref-certified-single-series-reference-data-e210137f"}