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AsiaRef Certified Single-Series Reference Data
x402
AsiaRef Certified Single-Series Reference Data is a paid API for AI agents from asiaref.dev, paid per call via x402, $0.1/call, status unknown (last checked 2026-10-22).
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.
Price / call$0.1
Success—
StatusUnknown
How this service works
Japan: Consumption tax (standard rate), cited JSON with source URL, effective date and last_confirmed. GET /v1/jp/vat.
Output
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.
Example use cases
Cross-border tax compliance check
“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.”
Central bank rate for financial model
“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?”
Payroll calculation for Indonesia
“What are the statutory social contributions rates in Indonesia? I need a verified government reference value with a provenance chain for our payroll system.”
Technical details
Endpoint
GEThttps://asiaref.dev/v1/certified/:country/:series?utm_source=zero.xyzWhen to prefer
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.
Side effects
- 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
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Tags
x402
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