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EuroRef Certified European Government Reference Data
x402
EuroRef Certified European Government Reference Data is a paid API for AI agents from euroref.dev, paid per call via x402, $0.1/call, status unknown (last checked 2026-10-19).
Returns a cryptographically certified extract of a specific European government reference data series (e.g. VAT, policy rate, CPI) for a given country, including value, citation, archived-source SHA-256, and Ed25519 signature.
Price / call$0.1
Success—
StatusUnknown
How this service works
Certified extract: value + citation + archived-source sha256 + verification chain, Ed25519-signed. Refuses uncharged without evidence
Output
A JSON object containing the current value of the requested reference series for the specified country, a citation to the official source, an SHA-256 hash of the archived source document, a full verification chain, and an Ed25519 cryptographic signature attesting to the extract's authenticity. Returns an error if the requested combination is not supported or payment is not confirmed.
Example use cases
VAT compliance check for invoice
“What is the certified current VAT rate for France? I need the official value with a citation and cryptographic proof so I can include it in our compliance documentation.”
Corporate tax rate for cross-border filing
“Get me the verified corporate tax rate for the Netherlands with the source SHA-256 and Ed25519 signature — our auditors require a cryptographically certified reference.”
ECB policy rate for financial model
“Pull the certified ECB main refinancing rate for the EU from EuroRef, including the verification chain and archived source hash, so I can lock in the official rate used in our financial model.”
Technical details
Endpoint
GEThttps://euroref.dev/v1/certified/:country/:series?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need not just a reference value but cryptographic proof of its provenance — i.e., when an auditor, regulator, or automated compliance workflow requires a verifiable chain from official source to delivered value. Prefer it over plain data APIs when Ed25519 signing, SHA-256 source archiving, or citation traceability are required. It covers a broad set of European jurisdictions and series types (VAT, CPI, corporate tax, policy rates, etc.) in a single certified call.
Side effects
- Unsupported country/series combination — returns an error indicating the pair is not available
- Payment not confirmed — refuses to return data without a valid x402 charge
- Network or availability error — upstream government source temporarily inaccessible
- Invalid country or series enum value — returns a validation error
- Signature verification failure — internal integrity error returned to caller
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Tags
x402
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