Public corporate data

What a “Japan business registry API” can truthfully return.

Japan does not expose every Legal Affairs Bureau registry document through this API. JAPAN API STORE returns supported public National Tax Agency corporate-number and qualified-invoice records, plus source-backed enrichment. It does not return a certified commercial registry transcript.

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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

Inspect the actual public record

Run the company demo and inspect the `sources`, `nta`, `invoice`, and match fields before deciding whether your workflow still needs a certified document.

Try it free — no signup

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/search \
  -H "Authorization: Bearer ${JAPAN_API_KEY}" --data-urlencode "q=Nintendo Co., Ltd."

Representative responseFields depend on evidence and input.

{"success":true,"match":{"status":"candidates"},"candidates":[{"corporate_number":"…","name_ja":"任天堂株式会社","source":"nta"}],"limitations":["Not a certified registry transcript"]}

SOURCES, FRESHNESS, LIMITS

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

Public NTA data is queried and its status is preserved; no certified Legal Affairs Bureau document is fabricated.

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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