Kr Law MCP server

@pipeworx/kr-law

South Korean national statutes: search by title, fetch one article (조문) at a time with its own effective date, and a statute's revision history. Bring your own OC (Open API user id) — every call runs on your own registration.

Part of Pipeworx — an MCP gateway connecting AI agents to 1815+ live data sources. This is an independent, unofficial integration — not affiliated with, endorsed by, or published by the upstream provider.

Tools

match's mst (the version id every other tool needs), ministry, promulgation/effective dates, and whether it's the current or a superseded version.

• krlawsearch(...) — find statutes by title keyword. Returns each

"5" or "4-2" for 제4조의2). Never the whole law body. Omit article_no for a paginated table of contents (numbers + titles) instead. Returns the article's own text, its paragraphs (항) and items (호), and its own effective date — which can differ from the law's own when only that article was later amended.

• krlawarticle(...) — fetch ONE article by mst + article_no (e.g.

promulgation with its own promulgation date/number and entry-into-force date, each a separate historical mst you can pass back to krlawarticle.

• krlawhistory(...) — revision history for a statute: every

Auth

BYO only, and will stay that way. Every tool requires _apiKey — your own OC from https://open.law.go.kr/LSO/main.do (로그인 → OPEN API → OPEN API 신청). With no key, every tool refuses before any network call, naming the argument and where to register.

Registering an OC requires Korean real-name verification — a Korean mobile-carrier identity check or an i-PIN. There is no alien-registration, passport, or overseas-signup path on the Ministry's own form. Pipeworx has no Korean-resident staff and cannot complete either method, so there is no platform key for this pack and none is coming (ruled, fleet #3128, 2026-10-15).

For a quick smoke test only (never use this as a real credential, and never rely on it being stable), the Ministry's own public demo id "test" works for krlawsearch and krlawarticle.

krlawhistory needs a service your OC may not have by default. Even a real, verified OC must separately enable 법령연혁 (law history) under My Applications on the open.law.go.kr dashboard (OPEN API → 신청내역 → check the 법령종류 box). An OC without it gets a specific, named error from this tool rather than a generic failure — follow the steps the error gives. The public demo id does not have this entitlement at all.

Data sources

Center Open API — South Korea's official statute database (law, cabinet order, and ministerial-ordinance text, with promulgation and entry-into-force dates and revision history).

• Ministry of Government Legislation (법제처), National Law Information

Known gaps and gotchas

Shortened. The full README is on GitHub.