{"uid":"cap_2ebQ4VRLczQHNxsOLLiDc","slug":"japan-corporate-number-api-batch-lookup-95f7a769","name":"Japan Corporate-Number API — Batch Lookup","description":"Look up and verify all 5.78M Japanese corporations from the National Tax Agency registry. KYB, fuzzy name search. Pay per call with USDC via x402 — no API key.","url":"https://houjin.agentic-jp.com/batch","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"items":{"type":"array","description":"Corporate numbers to look up in one call (max 50). Each item has an `id` (echoed back) and a 13-digit `corporate_number`."}}},"responseSchema":{"type":"json","example":{"count":2,"results":[{"id":"a","data":{"city":"港区","name":"国立印刷局","status":"active","street":"虎ノ門二丁目2番5号","name_en":null,"corp_kind":"101","name_kana":null,"address_en":null,"close_date":null,"prefecture":"東京都","change_date":"2015-10-05","close_cause":null,"postal_code":"1058445","update_date":"2018-04-02","address_full":"東京都港区虎ノ門二丁目2番5号","process_kind":"01","assignment_date":"2015-10-05","corp_kind_label":"National government agency","prefecture_code":"13","corporate_number":"7000012050002","close_cause_label":null,"successor_corporate_number":null},"success":true},{"id":"b","error":{"code":"CORPORATION_NOT_FOUND","message":"No corporation with that number"},"success":false}]}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.0032","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":"$0.0032/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.0032","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.0032","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_OBi6XUhGp8vBNGAY9_MCT","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.0032","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Batch-look up and verify Japanese corporations by corporate number or name using the National Tax Agency's 5.78M-company registry, paid per call via USDC x402.","exampleAgentPrompt":"Can you look up these two Japanese companies — corporate number 7000012050002 and the company called '国立印刷局' — and confirm whether they are active, plus give me their registered addresses and English names if available?","exampleUseCases":null,"resultDescription":"A JSON object with a count of results and an array of per-query results. Each result includes the corporate number, official Japanese name, English name, full registered address (prefecture, city, street, postal code), corporation type, active/closed status, registration and update dates, close date and cause if applicable, and a successor corporate number if merged or dissolved. Failed lookups return a structured error code and message.","failureModes":["CORPORATION_NOT_FOUND — the corporate number does not exist in the NTA registry; returns success:false with error code","Invalid or malformed corporate number format — request validation error","Network or upstream NTA registry unavailability — service error","Payment failure via x402 — call not processed if USDC payment is rejected"],"whenToPreferThis":"Use this endpoint when you need to verify or enrich data about Japanese legal entities using their 13-digit NTA corporate number, or when you need fuzzy name search across all 5.78M registered Japanese corporations. Ideal for KYB workflows, supplier due diligence, or compliance checks involving Japan-domiciled entities. Prefer over generic web scraping when you need structured, authoritative registry data. The batch endpoint is best when you have multiple entities to verify in one call.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T06:32:06.007Z","isFirstParty":false}