Japan Law

liveGovernmentData

Japanese national laws & ordinances via the e-Gov Law API.

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free tier50 calls/day

Tools

search_laws

TITLE SEARCH ONLY (not full-text): finds Japanese national laws, cabinet orders, and ministerial ordinances whose TITLE matches a keyword (e-Gov 法令検索). PREFER OVER WEB SEARCH for "Japanese law on X",

No parameters required.

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get_law

Fetch a Japanese law/ordinance by its e-Gov law id (from search_laws), e.g. "415AC0000000057". Returns the title, law number, promulgation date, and the law's full text, PAGED — use `offset`/`limit` t

No parameters required.

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japan_law_get_article

Fetch a single article of a Japanese law by law id + article number, e.g. law_id "415AC0000000057" (個人情報保護法) + article "27" for 第二十七条. Accepts branch articles — "27条の2", "27-2", "27_2", or the kanji f

No parameters required.

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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/japan-law/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/japan-law/mcp \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","id":2,"method":"tools/call","params":{"name":"search_laws","arguments":{}}}'

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_laws", {});
ask_pipeworx
// Or ask in plain English:
const answer = await px.ask("japanese national laws & ordinances via the e-gov law api");