`jp_corporate_number`

Pack: japan-corporate-number · Connect: https://pipeworx.io/mcp (see Connect below for a single-pack URL)

No MCP client? Call it directly: GET https://gateway.pipeworx.io/v1/tools/jp_corporate_number for the schema, then POST the same URL with its arguments for the data.

Look up a Japanese company/organization by its 13-digit NTA corporate number.

Tool description as the model sees it

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.

Parameters

Name	Type	Required	Description
`number`	string	yes	The 13-digit 法人番号 (corporate number), digits only, e.g. “1000012160153”.

Example call

Arguments

{
  "number": "1000012160153"
}

curl

curl -X POST https://gateway.pipeworx.io/japan-corporate-number/mcp \
  -H 'Content-Type: application/json' \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"jp_corporate_number","arguments":{"number":"1000012160153"}}}'

TypeScript (@pipeworx/sdk)

import { Pipeworx } from '@pipeworx/sdk';
const pipeworx = new Pipeworx();

const result = await pipeworx.call('jp_corporate_number', {
  "number": "1000012160153"
});

Connect

Add this to your MCP client config — every tool in the catalog, including this one — or use one-click install buttons:

{
  "mcpServers": {
    "pipeworx": {
      "url": "https://pipeworx.io/mcp"
    }
  }
}

Connect to just the japan-corporate-number pack

{
  "mcpServers": {
    "japan-corporate-number": {
      "url": "https://gateway.pipeworx.io/japan-corporate-number/mcp"
    }
  }
}

See Getting Started for client-specific install steps.

jp_corporate_number