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eu-verify ISIN Validator
x402
eu-verify ISIN Validator is a paid API for AI agents from data.greeneris.io, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-14).
Validates an ISIN (International Securities Identification Number) by checking ISO 6166 structure and Luhn base-36 checksum, returning country code, NSIN, and check digit.
Price / call$0.002
Success—
StatusUnknown
How this service works
Deterministic ISIN check before routing an order or paying a market-data API: structure regex (2-letter country or XS/EU, 9-char NSIN, check digit) and the Luhn checksum over the base-36 expansion. Query: ?isin=US0378331005. Returns valid, country_code, nsin, check_digit and is_international. A corrupted ISIN means a rejected order or the wrong instrument. Pure offline computation, 1y cache.
Output
A JSON object with fields: isin (the input), valid (boolean), nsin (national securities identifier number), country_code (ISO 2-letter country), check_digit, is_international (boolean), and source (description of validation method used — offline ISO 6166 structure + Luhn base-36 checksum).
Example use cases
Example prompt
“Can you check whether the ISIN US0378331005 is valid and tell me the country code and NSIN it breaks down into?”
Technical details
Endpoint
GEThttps://data.greeneris.io/v1/validate/isinWhen to prefer
Use this endpoint when you need to verify an ISIN's structural correctness and checksum before processing financial data, invoicing, or trade operations — it is fast, cheap ($0.002), requires no API key, and works offline against ISO 6166 rules. Does not provide live securities reference data (e.g. company name, exchange, price); for that you'd need a securities database. Ideal for data pipelines validating incoming ISINs at scale.
Side effects
- ISIN not provided or missing 'isin' query parameter → 400 Bad Request
- ISIN not exactly 12 characters → likely returns valid:false
- Non-alphanumeric characters in ISIN → validation failure
- Endpoint not funded/payment not made → HTTP 402 with machine-readable quote requiring USDC payment on Base via x402
- Network timeout or service unavailability → connection error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"isin": "US0378331005",
"nsin": "037833100",
"valid": true,
"source": "offline ISO 6166 structure + Luhn base-36 checksum (no securities reference data)",
"check_digit": "5",
"country_code": "US",
"is_international": false
}
}Tags
x402
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