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National ID Number Format Validator
x402
National ID Number Format Validator is a paid API for AI agents from api.strale.io, paid per call via x402, $0.0216/call, status unknown (last checked 2026-09-13).
Validates national identification number formats and checksums for SE, FI, NO, DK, GB, US, and DE — without verifying identity
Price / call$0.0216
Success—
StatusUnknown
How this service works
Validate national identification number formats. Supports Swedish personnummer, Finnish henkilötunnus, Norwegian fødselsnummer, Danish CPR, UK National Insurance, US SSN format, and German Steuer-ID. Checks format and checksum where applicable. Does NOT v…
Output
Returns a validation result indicating whether the ID number matches the expected format and passes checksum verification for the specified country (SE, FI, NO, DK, GB, US, DE). Does not confirm real-world identity.
Example use cases
Example prompt
“Can you check whether '8112289874' is a valid Swedish personnummer format — including the checksum?”
Technical details
Endpoint
GEThttps://api.strale.io/x402/id-number-validateWhen to prefer
Use this endpoint when you need to validate the format and checksum of a national ID number from Sweden, Finland, Norway, Denmark, UK, US, or Germany before storing or processing user-supplied identity data. Prefer this over generic regex checks because it handles country-specific checksum algorithms (e.g. Luhn-like for personnummer). Do not use this to verify that a person actually exists — it only checks structural validity.
Side effects
- Unsupported country_code returns an error (only SE, FI, NO, DK, GB, US, DE supported)
- Malformed or missing id_number or country_code returns a 400-style error
- Numbers that pass format but fail checksum return invalid with checksum failure reason
- Network or payment (x402) failure returns no result
Input
{
"id_number": "8112289874",
"country_code": "SE"
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Output
{
"_meta": {
"payment": {
"method": "x402",
"price_usd": 0.0216,
"settlement_id": "0xab5e235ca16ad1fba0cf6978a526d18ad69d5ac84ddb76e98f15d8da5783fb26"
},
"capability": "id-number-validate",
"latency_ms": 0,
"provenance": {
"source": "strale-id-validator",
"fetched_at": "2026-06-18T04:26:12.984Z"
}
},
"valid": true,
"id_type": "personnummer",
"normalized": "811228-9874",
"country_code": "SE",
"checksum_valid": true,
"extracted_info": {
"gender": "male",
"birth_date_part": "811228"
},
"format_correct": true
}Tags
x402
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