Japan Corporate-Number (法人番号) API

Endpoints (6 live)

• POST /verify — KYB / KYC verification of a Japanese company: reconcile a company name (+ optional address) against the official JP corporate registry (名寄せ). Returns ranked candidate 法人番号 with a 0-1 confidence score, handling 株式会社 / (株) / ㈱ spelling variation and matching Japanese or English names. A dissolved corporation is never reported as `verified` even on an exact name match. Use it to confirm a vendor, customer, or invoice counterparty. (0.005 USDC on Base)
• GET /stats — Dataset metadata for this Japanese (JP) corporate-number API — how many corporations are loaded and which prefectures are covered. (0.001 USDC on Solana)
• POST /search — Search Japanese corporate records by query and return matching company results. (0.009 USDC on Base)
• GET /corporation/1 — Japanese company lookup by 13-digit corporate number (法人番号) — official trade name (Japanese and registered English), registered address, postal code, corporation kind, and lifecycle status. `status` is "active" or "closed"; a closed record carries the closure cause/date and the successor's 法人番号 after a merger. Sourced from the 国税庁 (National Tax Agency) corporate registry. The leading check digit is validated before lookup. (0.005 USDC on Base)
• POST /batch — Look up many Japanese (JP) corporate numbers (法人番号) in one request (up to 50). Dynamic pricing by item count with a volume discount. (0.0032 USDC on Base)
• POST /report — Japanese company KYB report in one call — company lookup + verification from a corporate number or company name. Returns the official 国税庁 registry record, lifecycle status, kana + romaji name readings, risk flags (closed registry, recent registration/changes), an English summary, and the dataset vintage. Use for counterparty due diligence, supplier onboarding, or invoice fraud checks — replaces 3-4 separate lookups. (0.25 USDC on Base)