PlugRail JP Corporate — Claude Code MCP server: company search
Search Japanese companies by number, name, or address, and check invoice issuer registration numbers. Connect it when an agent needs company records from Japan.
claude mcp add --transport http jp-corporate https://jp-corporate.plugrail.dev/mcpWhat PlugRail JP Corporate does
The server uses public data from Japan’s National Tax Agency. It can find a company by its 13-digit corporate number, or return candidates from a name or address search. Other tools check an invoice issuer number’s status and fetch company profile sections covering items such as subsidies, certifications, and finances. Responses include source details and a disclaimer about the service’s status.
Name and address searches match prefixes and require a two-digit prefecture code; each call returns at most 20 results. A company name by itself cannot identify one business with certainty, so check the returned candidates against other details. The free tier allows up to 100 tool calls per calendar month in Japan time, and does not require an API key.
What it helps with
- find a company using its 13-digit corporate number
- search for companies by prefecture and name prefix
- locate businesses by prefecture and address prefix
- check an invoice issuer number’s registration status
- retrieve company profile details on finances and subsidies
Example prompts for the agent
- Find the company with corporate number 7000012050002.
- Search for Tokyo companies whose names begin with Shibuya.
- Check whether invoice issuer number T followed by 13 digits is registered.
How to install PlugRail JP Corporate
Platform CLI: remote server
claude mcp add --transport http jp-corporate https://jp-corporate.plugrail.dev/mcpPlatform CLI: remote server
codex mcp add jp-corporate --url https://jp-corporate.plugrail.dev/mcpConfig file
{
"mcpServers": {
"jp-corporate": {
"url": "https://jp-corporate.plugrail.dev/mcp"
}
}
}Config file
{
"servers": {
"jp-corporate": {
"type": "http",
"url": "https://jp-corporate.plugrail.dev/mcp"
}
}
}Platform CLI: remote server
gemini mcp add -t http jp-corporate https://jp-corporate.plugrail.dev/mcpStep by step, with commands for each platform: How to add an MCP server to Claude Code, Codex, Cursor, VS Code, Gemini CLI and more
Questions about PlugRail JP Corporate
How do I install PlugRail JP Corporate in Claude Code?
Run claude mcp add --transport http jp-corporate https://jp-corporate.plugrail.dev/mcp. The server connects over HTTP.
What does PlugRail JP Corporate do?
It searches Japanese company records by number, name, or address, checks invoice issuer registration numbers, and retrieves company profiles.
What are the limits of name and address searches?
Searches need a two-digit prefecture code and match only the start of a name or address. Each call returns up to 20 results.
