MCP server exposing 2 tools for japan-corporate-number.
This URL is a JSON-RPC 2.0 endpoint over HTTP. Issue POST requests with a JSON-RPC body. Browsers and search crawlers land here on GET.
POST https://gateway.pipeworx.io/japan-corporate-number/mcp
Content-Type: application/json
{"jsonrpc":"2.0","id":1,"method":"tools/list"}jp_corporate_number — Look up one Japanese corporation/organization by its 13-digit 法人番号 (corporate number) in Japan's National Tax Agency register: legal name, katakana reading and English name when NTA holds one, address, corporate-kind (stock company, LLC, government body, etc.) and status (active, or closed/merged with the date and successor number). Validates the check digit before looking up. Use for "what company is corporate number 1234567890123", verifying a Japanese business is real, or resolving a 法人番号 found elsewhere.jp_company_search — Search Japan's National Tax Agency corporate-number register by name — Japanese (kanji/katakana, substring match) or the official English name/katakana reading NTA holds for some entities. Optionally filter by prefecture (Japanese name, English name, or 2-digit code). Returns each match's corporate number, name, kind and address so you can pick the right one, then call jp_corporate_number for full detail. Covers 5.8M registered entities: companies, government bodies, NPOs, foundations.Code samples (curl / TypeScript / one-click client install), schemas, and the live playground are on the pack page:
https://pipeworx.io/packs/japan-corporate-number/
Pipeworx is an open MCP gateway connecting AI agents to live data. pipeworx.io