Estat Japan

e-Stat (Japan) MCP — Japanese government statistics aggregator (~5000 tables across population, economy, labor, trade, prices, agriculture, environment). Free with an app ID.

Part of Pipeworx — an MCP gateway connecting AI agents to 1394+ live data sources.

Tools

• search_stats(query, limit?, start_position?, lang?) — find stats tables
• get_metadata(stats_data_id, lang?) — dimensions + code lists for a table
• get_data(stats_data_id, limit?, start_position?, lang?, filters?) — observations
• list_data_catalog(query?, limit?, start_position?, lang?) — browse catalog

Auth

• Platform key: gateway env PLATFORM_ESTAT_KEY (an appId issued by e-stat.go.jp)
• BYO: ?_apiKey=<appId> after registering at https://www.e-stat.go.jp/api/

Data source

https://api.e-stat.go.jp/rest/3.0/app/json/ — appId as query param.

Default language is Japanese (J); pass lang: "E" for English where available.

Quick Start

Add to your MCP client (Claude Desktop, Cursor, Windsurf, etc.):

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

Or connect to the full Pipeworx gateway for access to all 1394+ data sources:

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

Using with ask_pipeworx

Instead of calling tools directly, you can ask questions in plain English:

ask_pipeworx({ question: "your question about Estat Japan data" })

The gateway picks the right tool and fills the arguments automatically.

More

• Docs and guides
• pipeworx.io

License

MIT