ClauseIt

Check a drafted Korean legal answer or filing before it is final. Verifies every cited statute, article and case exists, flags repealed laws, unconstitutional or deleted articles, wrong court names, dissenting opinions presented as holdings and misquoted article text, with suggested fixes. It also returns a ledger pairing each cited sentence with the closest passage of the cited source, so you can confirm the source actually supports the sentence. Pass question so case numbers the user supplied are not treated as fabricated. For filings pass document_type (소장·답변서·내용증명): it adds filing checks (sections, admissions, exhibit list, demand deadline, asserting that a demand letter interrupts the limitation period, criminal-complaint pressure) and treats the case number on the filing's 사건 caption line as the user's own case.

check_answer

Validity detail for up to 10 ids. Precedents: overruled by a Supreme Court en banc decision, outcome on appeal (affirmed/reversed), whether the statute it interpreted has since been amended, lower-court status and dissents. Articles: Constitutional Court rulings (unconstitutional, nonconforming, limited) with their scope, deletion and recent amendment. Interpretations are marked non-binding.

citator

Navigate the citation graph from one id. relation=cited_by on an article id lists the precedents, Constitutional Court decisions and interpretations that cite it, most authoritative first (leading cases). Other relations: cites (what a document cites), appeal (lower court ↔ appellate decision), hierarchy (enforcement decree/rules under a statute), interpretations (interpretations and administrative rules applying an article). Paged with cursor.

get_related

Read one document by id (from search, legal_research, lookup_citations or get_related). For an article id like 'law:<id>/제750조' it returns the article text with its validity note (위헌·삭제·최근 개정) and the version in force; pass as_of (YYYY-MM-DD) to read the version in force on that date. For precedents it returns 판시사항/판결요지 first, labels dissenting/concurring-opinion passages, and notes the appellate outcome when known. A statute fetched without an article lists its annexes (별표·서식) with ids like 'law:<id>/별표3'; fetching one returns its text (tables as box-drawing text) and links to the official HWP/PDF. Long texts are paged — pass the returned page number.

fetch

Two-step research for a legal question, using ClauseIt's retrieval (statutes, precedents, Constitutional Court, interpretations, plus citation graph and statute hierarchy). Step 1: call with the question (and optionally search_queries rewritten in Korean legal terms, legal_terms, case_numbers) to get up to 30 candidate documents with previews and a pool_id. Step 2: call again with the same question and focus, the pool_id and selected = the candidate ids you will actually rely on, most relevant first (up to 15); it returns the evidence package built from your selection. Omitting selected in step 2 returns the package in search order.

legal_research

Resolve citations written in any usual form — '민법 제750조', '대법원 2020다41002', '2004 헌마 554', '90헌바16' — to the actual documents, with an excerpt, validity status and URL; unresolved ones come back with similar candidates. Useful for checking the statutes and cases a user's question takes for granted before answering, and for turning a citation into an id for fetch.

lookup_citations

Hybrid (keyword + semantic) search over Korean statutes (법령), Supreme/lower court precedents (판례), Constitutional Court decisions (헌재결정), Ministry of Government Legislation interpretations (법령해석례), administrative rules (행정규칙) and local ordinances (자치법규, partial coverage). Returns up to 20 results with id, title, URL, date, court and a validity status (e.g. overruled, unconstitutional article, lower court). Statute hits also list the best-matching articles. Write the query in Korean legal terms (e.g. '임대차 보증금 반환 지연손해금'). fetch reads a result in full. For a question that needs a ready evidence package, legal_research is usually better.

search

Amendment timeline of one statute article: each version with promulgation/enforcement dates and what changed (신설·개정·삭제·이동), optionally a diff between two dates, and the transitional provisions (부칙) of the relevant amendment. Use it when the events of a case predate the current text.

article_history