# Japanese Billing-Invoice Issuer Check (T-Number Verification)

> 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.

## Facts

- Endpoint: POST https://api.jpverify.com/jp-invoice/check?utm_source=zero.xyz
- Price: $0.03/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/japanese-billing-invoice-issuer-check-t-number-verification-c357a915
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_UPWf848adNJHJYV70jfFq

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability japanese-billing-invoice-issuer-check-t-number-verification-c357a915 -d '<json body>'
```

Example prompt: Can you verify this Japanese invoice? The T-number is T1234567890123, the issuer name is '株式会社サンプル', and the registered address is '東京都千代田区丸の内1-1-1' — check if the T-number is valid and whether the name and address match the NTA qualified invoice registry.

## When to prefer this

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.

## Known failure modes

- 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

## 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.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/japanese-billing-invoice-issuer-check-t-number-verification-c357a915/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.jpverify.com](https://www.zero.xyz/host/api.jpverify.com/llms.txt)