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httpthirdwebcdp

usaref.dev

Tax-ID / VAT-number validation for North American countries: valid/invalid, normalised form, id type and the reason it failed. Format plus the official check-digit algorithm where the tax authority publishes one; every rule cited to an official source with its date. Pure algorithmic, no registry lookup

Resource URL

https://usaref.dev/v1/taxid/validate

Payment options

exactBase (8453)

$0.003 USDC

Max amount

Pay to
0x1F0409ccD20A2fb497d4DeCeF4E17e9d0688FeA6
Timeout
300s

Tags

tax-idvat-numbervalidationkybnorth-america

For agents

Prompt snippet for AI agents

Find and pay for this x402 resource:
URL: https://usaref.dev/v1/taxid/validate
Type: http
Sources: thirdweb, cdp

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