{"uid":"cap_zdj_1TuVaWatJ7DDDc7N_","slug":"kaisha-japan-company-registry-corporate-events-feed-749006f8","name":"Kaisha Japan Company Registry — Corporate Events Feed","description":"Official-data lookups for Japanese companies, priced per call via x402 (USDC on Base & Solana). Includes the only Japan qualified-invoice (適格請求書) registration-number verification on x402 — checked against the National Tax Agency dataset. Also: resolve company names / 13-digit corporate numbers to registry records, and compute Japanese business days & national holidays. No API keys — pay per request with x402.","url":"https://kaisha-api.hp-vladic.workers.dev/companies/events","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":[],"properties":{"to":{"type":"string","description":"Explicit range end YYYY-MM-DD"},"days":{"type":"number","description":"Lookback window in days (1-60, default 7)"},"from":{"type":"string","description":"Explicit range start YYYY-MM-DD"},"kind":{"type":"number","description":"Entity kind code (301=株式会社, 305=合同会社...)"},"type":{"type":"string","description":"new | renamed | moved | closed | merged | all (default new)"},"limit":{"type":"number","description":"Max results (default 50, max 200)"},"offset":{"type":"number","description":"Paging offset"},"prefecture":{"type":"string","description":"Filter by prefecture, e.g. 東京都"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"type":"new","count":1,"range":{"to":"2026-07-17","from":"2026-07-11"},"events":[{"kind":{"en":"Kabushiki Kaisha (stock company)","ja":"株式会社"},"name":"株式会社サンプル","event":{"en":"newly registered","ja":"新設"},"address":{"city":"渋谷区","postCode":"1500001","prefecture":"東京都"},"eventDate":"2026-07-17","assignmentDate":"2026-07-16","corporateNumber":"1010001234567"}],"dataThrough":"2026-07-17"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_4vubF4dhjtupUkzTziuVF","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns a paginated feed of recent Japanese company registry events (new incorporations, renames, closures, mergers, relocations) filtered by type, entity kind, prefecture, and date range","exampleAgentPrompt":"Show me all newly registered 株式会社 companies in 東京都 from the past 14 days — up to 100 results please.","exampleUseCases":[{"title":"Weekly new-incorporations digest for Tokyo","prompt":"Pull the last 7 days of newly registered companies in 東京都 from Japan's registry — give me up to 50 results so I can review this week's new incorporations."},{"title":"Monitor recent business closures in Osaka","prompt":"I want to see all companies that have closed or been dissolved in 大阪府 over the past 30 days — can you fetch that from Japan's corporate events feed?"},{"title":"Track GK and KK mergers nationwide","prompt":"Get me a list of all merger events (kind codes 301 and 305) across all prefectures for the past 14 days from Japan's company registry, up to 200 results."}],"resultDescription":"A JSON object containing the event type queried, total count, date range covered, a data-through date reflecting the latest NTA dataset update, and an array of matching events — each with the 13-digit corporate number, company name in Japanese, event description in Japanese and English, entity kind (ja/en), event date, assignment date, and address (prefecture, city, postcode).","failureModes":["Payment not received / x402 challenge not completed — request blocked before data is returned","Invalid date format for from/to parameters — malformed query","days parameter out of 1-60 range — rejected with validation error","Invalid kind code supplied — no matching entity type returns empty results","Prefecture string not matching NTA canonical names — filter returns zero results","NTA dataset temporarily stale — dataThrough may lag real-time by 1-2 days","Offset beyond available results — returns empty events array"],"whenToPreferThis":"Choose this endpoint when you need a real-time feed of Japanese corporate registry events — new incorporations, closures, mergers, relocations, or renames — filterable by prefecture, entity type, and date range, without needing a corporate number or company name upfront. Prefer this over the name/number lookup endpoints when doing market monitoring, lead generation from new incorporations, compliance screening for entity changes, or building alerts on registry activity. It is the only x402-payable corporate events feed sourced directly from NTA data, requiring no API key setup.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T18:37:18.890Z","isFirstParty":false}