# Euroref Certified Single-Series Lookup

> Euroref Certified Single-Series Lookup is a paid API for AI agents from euroref.dev, paid per call via x402, $0.1/call, status unknown (last checked 2026-10-25).

Returns a single certified government reference data series for a specified European country (e.g. policy rate, VAT rate, CPI, minimum wage) as cited JSON with official source URLs and last-confirmed dates.

## Facts

- Endpoint: GET https://euroref.dev/v1/certified/%7Bcountry%7D/%7Bseries%7D?utm_source=zero.xyz
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-25
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/euroref-certified-single-series-lookup-aafc2514
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_FwBvJgBDm2spTwTwu8bPp

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability euroref-certified-single-series-lookup-aafc2514
```

Example prompt: What is the current corporate tax rate in France according to the official government source? I need the cited figure with its source URL and the date it was last confirmed.

## When to prefer this

Choose this endpoint when you need a single authoritative, cited government reference data point for a specific European country — especially when official sourcing and last-confirmed dates are required for compliance, reporting, or regulatory purposes. Prefer this over the country-brief endpoint when you only need one series and want to minimize cost ($0.003 vs $0.01).

## Known failure modes

- Country not in the 35-country coverage list — request refused
- Data series not available for the requested country — request refused
- Invalid country or series parameter — likely 400-level error
- Network or payment failure — call may not complete
- Stale data if last-confirmed date is old — check the date field

## How this service works

European government reference data for 35 countries as cited JSON: central-bank policy rates, VAT/GST and VAT registration thresholds, CPI, corporate, personal and withholding tax, social contributions, minimum wages, statutory interest, official FX rates, filing deadlines and public holidays (coverage varies by country). Every value carries its official source URL and last-confirmed date. Single facts $0.003; country brief (every series for one country) $0.01; cross-country compare (one series, up to 10 countries) $0.02; tax-ID and VAT-number checks $0.003; computed answers (VAT, income tax, working days, minimum-wage check) $0.01-$0.02. Pay per call in USDC on Base via x402 or MPP, no signup, or by card with credit packs or monthly plans on one key valid across all 7 regional services. Free tier: GET /catalog, plus a free email key with 50 answer calls a day, commercial use allowed. Finished answers, one cited dossier per call (supported countries vary per job; others are refused free): cost this hire (wage-floor verdict, contributions, employer cost) $0.50; charge this sale (which VAT applies, net/VAT/gross) $0.50; charge this sale certified (plus a signed VAT-rate extract) $0.75; invoice due date and statutory late interest $0.40; country evidence pack (brief plus signed extracts) $0.25; hire compare $0.75 for 2 countries, $1.00 for 3-5; next filings (VAT, PAYE, corporate-tax due dates rolled for holidays) $0.35.

Free trial: 3 computed-answer calls per day per IP on POST /v1/answers/* with header X-Free-Trial: 1 (without it, the normal x402 402; once used up, the 402 carries free_trial_resets_at). MCP answer tools use the trial automatically when no api_key is passed. Every series of the evaluation country is free. Card credit (same per-call price as x402): /pricing.

## Output

A JSON object containing the requested government reference data series for the specified European country, including the numeric or structured value, the official source URL, and the last-confirmed date. Data is cited to primary government or central-bank sources.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/euroref-certified-single-series-lookup-aafc2514/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from euroref.dev](https://www.zero.xyz/host/euroref.dev/llms.txt)