Qualified invoice data

Check a Japanese qualified-invoice issuer without parsing a separate system.

Business Mix accepts a `T`-prefixed qualified-invoice registration number or company query and returns supported public issuer status together with the matching corporate identity. The source is the National Tax Agency publication system.

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Built in Japan · English-first JSON · Official and public source provenance · No government endorsement claimed

NO SIGN-UP · NO API KEY

Try an invoice-registration lookup

Use a supported example in the company demo, then inspect the `invoice` block and source evidence. No login is required for the demo.

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Look up a Japanese company

Enter an English company name, romanized location, corporate number, or T-prefixed invoice registration number. The API finds the official Japanese company record.

English input · Official Japanese output · No query history

English company name, corporate number, or invoice number

Try a sample

No Japanese typing is required. Enter an English or romanized company name and receive its official Japanese legal name, corporate number, location, and public evidence.

Your easy-to-read result appears here.

No account, API knowledge, or card is needed.

PRODUCTION REQUEST

Copy a request, then inspect the actual response contract.

The free key uses the same documented endpoint. Put the secret in a server-side environment variable and never commit it.

curl --get https://api.japanapistore.com/v1/business/resolve \
  -H "Authorization: Bearer ${JAPAN_API_KEY}" --data-urlencode "q=T1180301018771"

Representative responseFields depend on evidence and input.

{"success":true,"invoice":{"registration_number":"T1180301018771","registered":true,"valid":true},"business":{"corporate_number":"1180301018771"},"sources":[{"provider":"nta_invoice","status":"matched"}]}

SOURCES, FRESHNESS, LIMITS

Evidence you can inspect—not a black-box “Japan answer.”

The API reports the official source status and observed data version rather than assigning an invented universal freshness date.

National Tax Agency Corporate Number Publication Site

Used for: Public corporate number, legal name, head-office address and change status.
Freshness: The response reports source status and observed data version.
Transformation: Legal-form placement and name variants are normalized into English-friendly JSON.

National Tax Agency Qualified Invoice Issuer Publication System

Used for: Public qualified-invoice issuer registration status.
Freshness: Registration evidence is fetched and reported with source provenance.
Transformation: Corporate and invoice evidence are joined without implying government endorsement.

FREE DEVELOPER TIER

Use the demo now. Create a key only when you are ready to build.

No credit card for the free key. One dashboard gives access to the four existing APIs.

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