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Japanese Billing-Invoice Issuer Check (T-Number Verification)
x402
Japanese Billing-Invoice Issuer Check (T-Number Verification) is a paid API for AI agents from api.jpverify.com, paid per call via x402, $0.03/call, status unknown (last checked 2026-10-11).
Verifies a Japanese qualified-invoice T-number against the NTA registry, compares the issuer name and address from an invoice with official corporate registry data, and returns OCR, registry, and resolved issuer fields.
Price / call$0.03
Success—
StatusUnknown
How this service works
Japanese billing-invoice issuer check / 請求書発行者照合: verify a T-number, compare issuer name and address with Japan's NTA qualified-invoice and corporate registries, and return OCR, registry, and resolved issuer fields. Phone numbers are not compared because they are not published in the NTA corporate registry. / T番号を検証し、発行者名・住所を国税庁の適格請求書および法人番号データと比較して、OCR値・登記値・採用値を返します。国税庁の法人番号データには電話番号がないため、電話番号は比較しません。
Output
Returns a structured response containing the T-number validation status, the issuer's name and address as recorded in the NTA qualified invoice registry, the OCR-extracted values from the submitted invoice, and resolved/adopted field values showing which source was used. Match/mismatch indicators highlight discrepancies between submitted invoice data and registry data. Phone number comparison is not included as the NTA corporate registry does not publish phone numbers.
Example use cases
Accounts payable invoice compliance check
“Before we process this supplier payment, can you verify their invoice T-number T9876543210123 and confirm that the issuer name '合同会社テスト商事' and address '大阪府大阪市北区梅田2-2-2' actually match what's registered in the NTA qualified invoice registry?”
Automated invoice intake validation
“We just received a Japanese invoice from a new vendor claiming T-number T1122334455667 with issuer name 'ABC株式会社' and address '愛知県名古屋市中区栄3-3-3' — please check if this T-number is legitimate and if the issuer details line up with the official registry before we add them to our vendor master.”
Tax audit preparation for input tax credits
“For our consumption tax filing, I need to confirm that invoice issuer T4455667788990, listed as '株式会社フジ商会' at '福岡県福岡市博多区博多駅前1-1-1', is genuinely registered as a qualified invoice issuer with the NTA so we can claim the input tax credit.”
Technical details
Endpoint
POSThttps://api.jpverify.com/jp-invoice/check?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to verify a single Japanese qualified invoice's T-number and cross-reference the issuer name and address against NTA registry data in real time — for example, in accounts payable workflows, invoice intake automation, or tax compliance audits. Prefer this over the batch endpoint for single-invoice lookups where you also have issuer name and address fields to compare (not just the T-number). Use the batch endpoint instead when processing multiple invoices at once.
Side effects
- T-number not found in NTA registry — returns not-registered status
- T-number format or checksum invalid — returns format error
- Issuer name or address mismatch — returns mismatch flag with registry values
- NTA registry temporarily unavailable — returns upstream error
- Malformed request body — returns 400 validation error
- Payment not received or insufficient — returns 402 payment required
Tags
x402
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