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Tax ID (TIN) Format Validator
x402
Tax ID (TIN) 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 tax identification number (TIN) formats for 40+ countries using format rules and checksum algorithms, without querying tax authorities.
Price / call$0.0216
Success—
StatusUnknown
How this service works
Validate tax identification number (TIN) formats for 40+ countries. Checks format rules and checksum algorithms where applicable. Does not verify with tax authorities.
Output
Returns whether the provided tax identification number is valid for the detected or specified country, including format rule compliance and checksum verification results where applicable. Does not confirm registration with any tax authority.
Example use cases
Example prompt
“Can you check whether the tax ID '12-3456789' is a valid US EIN format — just validate the format and checksum, no need to verify with the IRS.”
Technical details
Endpoint
GEThttps://api.strale.io/x402/tax-id-validateWhen to prefer
Use this endpoint when you need fast, offline-style format and checksum validation of tax IDs across 40+ countries before submitting to a tax authority, processing a payment, or onboarding a business — especially when real-time authority verification is unnecessary, too slow, or too costly.
Side effects
- Unrecognized country code returns an error
- Tax ID format not matching any known pattern returns invalid
- Missing tax_id parameter returns 400 bad request
- Country code mismatch with prefix returns conflict error
- Unsupported country (outside 40+ supported list) returns unknown format
Input
{
"tax_id": "12-3456789",
"country_code": "US"
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Output
{
"_meta": {
"payment": {
"method": "x402",
"price_usd": 0.0216,
"settlement_id": "0xd8d0f34790e3c3d4a62655867b701a6f56115dabc52744f1032a9231a7d47c44"
},
"capability": "tax-id-validate",
"latency_ms": 0,
"provenance": {
"source": "strale-tax-validator",
"fetched_at": "2026-06-13T04:25:31.226Z"
}
},
"valid": true,
"tax_id": "12-3456789",
"normalized": "12-3456789",
"format_name": "EIN",
"country_code": "US",
"checksum_valid": null
}Tags
x402
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