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kaisha-api.hp-vladic.workers.dev invoice verify
https://kaisha-api.hp-vladic.workers.dev/invoice/verify
answers 402
Verify a Japan qualified-invoice-issuer registration number (インボイス登録番号, "T" + 13 digits) against the National Tax Agency publication dataset. Returns registration status (active/cancelled/not found), registration date, and — for corporations — the registered name and corporate number. Includes corporate-number checksum validation. Essential for AP automation and expense agents processing Japanese
We sent a real
GET request to this endpoint and it
answered 402 with payment requirements we could parse.
- Price
- $0.01
- Network
- base
- Pay to
- 0xF2A6416EBb0C594Ab2977695bED061729ddEb47b
- Spec dialect
- v2 (declares x402Version 2)
- Transport
- PAYMENT-REQUIRED header
- HTTP method
- GET
- Response latency
- 92 ms
- Payment options
- 2 usable of 2
- Last checked
- 2026-08-15T14:26:51.749Z (1d ago)
- Category
- identity
Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fkaisha-api.hp-vladic.workers.dev%2Finvoice%2Fverify"