e-Stat Japan

liveGovernmentAsia

Japanese government statistics — ~5000 tables across population, economy, labor, trade, prices, agriculture. Free with app ID.

4tools
0msauth
free tier50 calls/day
🔑Authentication

Platform key handled by Pipeworx. Or BYO via ?_apiKey=<appId>.

Config with credentials
{
  "mcpServers": {
    "pipeworx-estat-japan": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-remote",
        "https://gateway.pipeworx.io/estat-japan/mcp?_apiKey=your_app_id"
      ]
    }
  }
}

Get an API key →

Tools

search_statsrequired: query

Search e-Stat statistical tables. Returns IDs and names for tables matching the query. Use the IDs with get_data / get_metadata.

Parameters
NameTypeDescription
queryreqstring—
limitoptnumber—
start_positionoptnumber—
langoptstringJ | E
▶Try it
get_metadatarequired: stats_data_id

Fetch the dimension definitions and code lists for a specific e-Stat statistics table (statsDataId). Returns category codes needed to construct filters for get_data. Requires _apiKey.

Parameters
NameTypeDescription
stats_data_idreqstring—
langoptstring—
▶Try it
get_datarequired: stats_data_id

Fetch observations from a stats table. Optionally filter by dimension codes.

Parameters
NameTypeDescription
stats_data_idreqstring—
limitoptnumber—
start_positionoptnumber—
langoptstring—
filtersoptobject—
▶Try it
list_data_catalog

Browse the e-Stat high-level data catalog (dataset/table groupings) with an optional free-text filter. Returns catalog entries with dataset IDs, names, and organization metadata. This endpoint is slow

Parameters
NameTypeDescription
queryoptstring—
limitoptnumber—
start_positionoptnumber—
langoptstring—
▶Try it

Test with curl

The gateway speaks JSON-RPC 2.0 over HTTP POST. You can test any pack directly from the terminal.

List available tools
bash
curl -X POST https://gateway.pipeworx.io/estat-japan/mcp \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/list"}'
Call a tool
bash
curl -X POST https://gateway.pipeworx.io/estat-japan/mcp \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","id":2,"method":"tools/call","params":{"name":"search_stats","arguments":{"query": "hello"}}}'

Use with the SDK

Install @pipeworx/sdk to call tools from any TypeScript/Node project.

TypeScript
import { Pipeworx } from '@pipeworx/sdk';
const px = new Pipeworx();
const result = await px.call("search_stats", {"query":"example"});
ask_pipeworx
// Or ask in plain English:
const answer = await px.ask("japanese government statistics — ~5000 tables across population, economy, labor, trade, prices, agriculture");