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Japan Houjin Number Lookup API
x402
Japan Houjin Number Lookup API is a paid API for AI agents from api.kasanegi.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).
Looks up a Japanese corporate registration number (hōjin bangō) and returns clean structured company data from Japanese government public records.
Price / call$0.01
Success—
StatusUnknown
How this service works
Stop scraping Japanese government and public-data sites. Call clean Japan payroll, company, and grant APIs over one host. Preview free; one public marketplace listing covers all current products; x402 direct is available for agent-native buyers.
Output
Returns a JSON object containing structured company information sourced from the Japanese National Tax Agency's corporate number registry, including the official registered company name, address, corporation type, and current registration status for the given 13-digit hōjin bangō.
Example use cases
Verify vendor identity before payment
“I need to verify a Japanese supplier we're about to pay. Can you look up their corporate registration number 1234567890123 and confirm their official company name and current registration status?”
Automate KYC checks for Japanese partners
“We're onboarding a new Japanese business partner and have their hōjin bangō 9876543210987. Can you pull their registered company details and address so we can complete our compliance checks?”
Validate customer data during signup
“A customer just signed up and provided the hōjin bangō 5555666677778. Can you look that up and verify it matches the company name and address they entered in our form?”
Technical details
Endpoint
GEThttps://api.kasanegi.com/v1/local/houjin-number/lookupWhen to prefer
Choose this endpoint when you need structured, clean JSON data for a Japanese corporation identified by its official 13-digit hōjin bangō (corporate number), especially when you want to avoid scraping the NTA's own website. Ideal for KYC enrichment, vendor verification, or any workflow that starts with a known Japanese corporate registration number.
Side effects
- Invalid or malformed corporate number (not 13 digits) returns a 400 error
- Corporate number not found in NTA registry returns a 404 or empty result
- Payment not included or insufficient USDC triggers x402 payment required response
- Upstream NTA data source temporarily unavailable returns 503
- Rate limiting or quota exceeded returns 429
Output
Schema · Response
{
"type": "json",
"mimeType": "application/json"
}Tags
x402
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