{"uid":"cap_rLu8HejWbHcuUyXhBv3K4","slug":"kaisha-api-japanese-corporate-number-resolver-3c5853aa","name":"Kaisha API – Japanese Corporate Number Resolver","description":"Resolve a Japanese company to its official registry record: 13-digit corporate number (法人番号), canonical registered name, head-office address, entity type, and active/closed status. Query by name (fuzzy normalization: legal-form words, zenkaku/hankaku and kana variants are handled) or by corporate number. Source: National Tax Agency corporate number registry, all ~5M registered corporations in Japan.","url":"https://kaisha-api.hp-vladic.workers.dev/resolve","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":["q"],"properties":{"q":{"type":"string","description":"Company name (Japanese) or 13-digit corporate number"},"limit":{"type":"number","description":"Max results (default 10, max 25)"},"prefecture":{"type":"string","description":"Optional prefecture filter (e.g. 東京都)"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"found":1,"query":{"type":"name","value":"トヨタ自動車","normalized":"トヨタ自動車","prefecture":"愛知県"},"results":[{"kind":{"en":"Kabushiki Kaisha (stock company)","ja":"株式会社"},"name":"トヨタ自動車株式会社","status":"active","address":{"city":"豊田市","street":"トヨタ町1番地","postCode":"4718571","prefecture":"愛知県"},"closeDate":null,"lastUpdate":"2026-06-30","corporateNumber":"1180301018771"}],"matchType":"exact"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_YYDTL8zqsn5sk7eyGd4SY","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Resolves a Japanese company name or 13-digit corporate number to its official NTA registry record, including corporate number, canonical name, head-office address, entity type, and active/closed status.","exampleAgentPrompt":"Can you look up the official NTA registry record for トヨタ自動車株式会社 — I need their 13-digit corporate number, registered head-office address, and whether they're currently active?","exampleUseCases":null,"resultDescription":"Returns up to 25 matching registry records from the NTA's ~5M Japanese corporations, each including the 13-digit corporate number (法人番号), canonical registered name, head-office address, legal entity type, and active/closed status. Fuzzy normalization handles zenkaku/hankaku, kana variants, and legal-form suffixes.","failureModes":["Company name not found in registry — returns empty results or 404","Ambiguous name matches too many records — returns up to limit results, may need refinement","Invalid or non-existent 13-digit corporate number — returns no match","Non-Japanese company queried — not in NTA registry, no results","Malformed query parameter — 400 bad request","Payment not fulfilled — 402 payment required (x402 protocol)"],"whenToPreferThis":"Use this endpoint when you need to authoritatively resolve a Japanese company to its official NTA registry identity — corporate number, canonical name, address, and status — especially when you have only a colloquial or partial name and need fuzzy normalization across kana/kanji variants. Prefer over general web search when you need structured, authoritative registry data on any of Japan's ~5M registered corporations.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T00:35:35.088Z","isFirstParty":false}