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ISIN Validator (ISO 6166)
x402
ISIN Validator (ISO 6166) is a paid API for AI agents from api.vextorium.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-16).
Validates a securities ISIN code: checks format, ISO 6166 check digit, issuing country, and embedded CUSIP (US/CA) or SEDOL (GB/IE) — computed locally with no data stored.
Price / call$0.003
Success—
StatusUnknown
How this service works
Validate a securities ISIN (ISO 6166): format, check digit, issuing country and embedded CUSIP (US/CA, with its own check) or SEDOL (GB/IE). Computed locally; nothing stored.
Output
A JSON object containing: the normalized ISIN string, a boolean validity flag, the NSIN (national securities identifier portion), the issuing country name and ISO code, the extracted CUSIP (for US/CA) or SEDOL (for GB/IE), a boolean indicating whether that embedded identifier's own check digit is valid, and the ISIN check digit character.
Example use cases
Pre-trade ISIN integrity check
“Before we submit this order, validate that ISIN GB0002634946 is correctly formatted and that its embedded SEDOL passes the check — I need a green light before it goes to the broker.”
Data pipeline ISIN cleansing
“I have an ISIN ES0113900J37 from an external feed and I need to verify it's valid, confirm the issuing country, and extract the NSIN so I can store the clean record in our database.”
Compliance screening pre-check
“Our compliance system flagged CA9861913023 — can you validate its ISIN format and check digit, and tell me what country it was issued in and whether the embedded CUSIP is also valid?”
Technical details
Endpoint
POSThttps://api.vextorium.com/validar-isin-pago?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need fast, local (no external data stored), standards-compliant ISIN validation including ISO 6166 check digit verification, country identification, and embedded CUSIP (US/CA) or SEDOL (GB/IE) sub-identifier checks — all in a single call at very low cost. Prefer it over a general financial data API when you only need structural validation, not pricing or market data.
Side effects
- Malformed ISIN (wrong length, non-alphanumeric characters) returns valido: false with null sub-fields
- Unknown or unrecognized country prefix may result in null pais and null cusip/nsin fields
- Check digit mismatch returns valido: false
- Missing required 'isin' field in request body returns a validation error
- Network timeout on the micro-API endpoint
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| isin | string | ISIN code, e.g. US0378331005 or ES0113900J37 |
Output
Schema · Response
{
"type": "json",
"example": {
"isin": "US0378331005",
"nsin": "037833100",
"pais": "United States",
"cusip": "037833100",
"valido": true,
"pais_codigo": "US",
"cusip_valido": true,
"digito_control": "5"
}
}Tags
x402
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