OpenCaseLaw — Swiss Caselaw, Statutes & Doctrine by opencaselaw.ch
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1M+ Swiss court decisions, statutes & doctrine with citation graph (DE/FR/IT). CC0, free, 42 tools.
Facts
- MCP registry
ch.opencaselaw/swiss-caselaw· 1.3.0- Endpoint
https://mcp.opencaselaw.ch/mcp- Also hosted
https://mcp.opencaselaw.ch/ssesse- Website
- opencaselaw.ch
- GitHub stars
- 72
- Registry entry
- updated 30 Jul 2026
From the official MCP registry, the package registries and our own checks. JSON · Markdown
Why it's listed
- It's published in the registry under opencaselaw.ch, a namespace the registry only gives to whoever proves they control that domain.
Being indexed says nothing about quality, and nobody can pay for it. Is this yours? Ask for a review.
Tools it lists 42 · about 22,229 tokens of context · checked 45 minutes ago
| Tool | What it does | Hint |
|---|---|---|
searchSearch decisions (basic) | Minimal search tool following the deep-research search/fetch convention. Returns a ranked list of Swiss court decisions matching a query, each as {id, title, url, snippet}. Pair with `fetch` to retrieve a decision's… | read-only |
fetchFetch decision (basic) | Minimal fetch tool following the deep-research search/fetch convention. Fetches one Swiss decision's full text by id, returning {id, title, text, url, metadata}. The id comes from a `search` result (a decision_id like… | read-only |
search_decisionsSearch decisions | Use this tool to find COURT DECISIONS (Rechtsprechung): 1,050,000+ Swiss federal and cantonal decisions plus ~2,800 ECtHR decisions concerning Switzerland. Full-text search with keywords, phrases (in quotes), Boolean… | read-only |
get_decisionGet decision | Fetch a single court decision with full text. Look up by decision_id (e.g., bger_6B_1234_2025), docket number (e.g., 6B_1234/2025), or partial match. Full text is truncated at 200,000 characters for very long decisions.… | read-only |
get_decisionsGet decisions (batch) | Use this tool to fetch SEVERAL decisions at once (1-10 ids) instead of calling get_decision repeatedly. Same data per decision — canonical citation strings, Markdown link, Regeste, metadata — in ONE call. Prefer this… | read-only |
list_courtsList courts | List all available courts with decision counts, date ranges, and language coverage. Use this to discover what data is available. | read-only |
get_statisticsCorpus statistics | Get aggregate statistics about the dataset. Optionally filter by court, canton, or year. | read-only |
find_citationsFind citations | Given a decision_id, show what it cites and what cites it. Uses the reference graph database with 9.65M citation edges. Returns resolved citations with confidence scores and unresolved references. | read-only |
find_appeal_chainFind appeal chain | Trace the appeal chain (Instanzenzug) for a decision. Shows prior instances (lower courts) and subsequent instances (appeals to higher courts). Reconstructs the full procedural path, e.g. Bezirksgericht → Obergericht →… | read-only |
find_leading_casesFind leading cases | Find the most-cited decisions for a topic or statute. Authority ranking based on citation graph; a free-text topic ranks decisions whose regeste carries the query terms first (`regeste_match`: share of terms found, null… | read-only |
analyze_legal_trendAnalyze legal trend | Year-by-year decision counts showing jurisprudence evolution. Use with a statute reference (law_code + article), a text query, or both. Returns yearly counts with visual bar chart. | read-only |
draft_mock_decisionDraft mock decision | Build a research-only mock decision outline from user facts. Combines relevant Swiss case law retrieval with statute references. If possible, enriches statutes with Fedlex text excerpts. IMPORTANT: The tool may return… | read-only |
get_case_briefCase brief | Structured case brief: regeste, Sachverhalt, key Erwägungen (first 12 only — for orientation, NOT a pinpoint ranking), Dispositiv, statutes, citation authority, related cases. Accepts BGE ref, decision_id, or docket. To… | read-only |
get_decision_structureDecision structure | Structured decision fields: Sachverhalt (facts), Erwägungen as numbered paragraphs ('1', '1.1', '2.3'), Dispositiv (ruling), Regeste (BGE only). Federal decisions only; for cantonal use get_decision. Returns excerpts;… | read-only |
get_erwaegungGet Erwägung (verbatim) | Verbatim text of ONE numbered Erwägung — the citable unit in Swiss practice (e.g. 'BGE 136 III 513 E. 2.3'). Use when the user already gave an e_number. If only a claim was given (no e_number): use… | read-only |
find_relevant_erwaegungFind relevant Erwägung | Find which Erwägung paragraph(s) match a legal claim. Server-side FTS5+BM25 over per-paragraph text; returns top-k with confidence labels (high/medium/low) and a highlighted_snippet wrapping the matched sentence in… | read-only |
get_article_purposeArticle purpose (ratio legis) | Return verbatim text from the Federal Council Botschaft (or Erläuterungsbericht) explaining the legislative purpose of a specific article. Joins the verbatim Botschaft corpus (post-2003 BBl publications, Akoma Ntoso XML… | read-only |
search_botschaftSearch Botschaft | Use this tool to retrieve and quote the VERBATIM text of Federal Council Botschaften (legislative messages). Where get_article_purpose answers 'why does Art. X exist?', this tool answers 'show me every Botschaft passage… | read-only |
get_article_historyArticle history | Chronological story of a single statute article: current text + every linked Botschaft (enacted + amendments) + leading court interpretations + doctrinal commentary, all ordered by date. Combines statutes.db,… | read-only |
get_regesteGet Regeste | Get the official Regeste (head-note) of a Swiss court decision. The Regeste is the court's own formulation of the legal rule established — for BGEs especially, this is the canonical citation target. Often references… | read-only |
check_claim_supportCheck claim support | Verify whether a Swiss court decision actually supports a legal claim. Uses an independent Sonnet judge to compare the claim against verbatim text from the decision (Erwägung if pinpoint given, else Regeste, else first… | read-only |
attest_responseAttest response | MANDATORY FINAL-STEP AUDIT of your draft answer. Checks five hallucination classes: (1) every case citation (BGE/BGer/BVGer/BStGer/BPatGer/MKGE, FR/IT forms) exists and any pinpoint (E. X.Y) resolves to a real Erwägung;… | read-only |
citeCanonical citation | Get the canonical Swiss citation string for a decision reference. CALL THIS BEFORE writing any case citation in your response. Returns ready-to-embed citation_string (DE/FR/IT variants plus a canonical URL) and a… | read-only |
get_doctrineGet doctrine | Get statute text + leading cases + doctrinal timeline + Federal Council Botschaft (legislative intent) + scholarly commentary for a Swiss law article or legal concept. ALWAYS USE THIS for questions about the purpose,… | read-only |
generate_exam_questionGenerate exam question | Generate a Swiss law exam practice question (Fallbearbeitung) based on a real BGE. Returns a fact pattern (Sachverhalt) from a real court decision and a hidden analysis (applicable statutes, leading case, legal test,… | read-only |
get_lawGet law | AUTHORITATIVE LOOKUP for the text of any Swiss law article — federal OR cantonal — from two local mirrors. Federal (canton='CH', default): Fedlex mirror, all federal acts (OR, ZGB, StGB, ZPO, StPO, BV, SchKG, BGG, DBG,… | read-only |
search_lawsSearch laws | Use this tool to find STATUTE ARTICLES by topic — full-text over every locally indexed article, federal (Fedlex mirror) AND cantonal (LexFind mirror, all 26 cantons), interleaved. Not for whole laws by name… | read-only |
get_commentaryGet commentary | Look up a scholarly legal commentary from OnlineKommentar.ch (CC-BY-4.0) for a Swiss federal law article. Without article: lists available commentaries for that law. With article: returns the full commentary text,… | read-only |
search_commentariesSearch commentaries | Use this tool ONLY for article-anchored commentary — doctrinal discussion tied to a specific statute article: OnlineKommentar.ch / OpenLegalCommentary.ch (federal law) and the Kommentar zur Schaffhauser… | read-only |
search_scholarshipSearch scholarship | Use this tool for open-access SCHOLARSHIP (Lehre): OA journal articles (sui generis et al.), OA legal commentaries (OnlineKommentar, OpenLegalCommentary — this tool SUBSUMES search_commentaries), dissertations and… | read-only |
get_scholarshipGet scholarship record | Fetch a single OA legal publication (article, dissertation, commentary, etc.) by its pub_id. Returns full metadata + abstract + full text if available + cross-citations to statutes and decisions. | read-only |
find_scholarship_citing_statuteScholarship citing statute | Find OA legal scholarship that cites a given Swiss statute article. Sourced from article-anchored commentaries (OnlineKommentar / OpenLegalCommentary) PLUS full-text citation extraction across the open-access journal… | read-only |
find_scholarship_citing_decisionScholarship citing decision | Find OA legal scholarship that cites a specific Swiss court decision. Reverse direction of the scholarship↔caselaw bridge: given a decision_id (e.g. 'bge_BGE_140_III_86' or 'bger_4A_571_2008'), return open-access… | read-only |
list_scholarship_sourcesList scholarship sources | List the open-access legal scholarship sources currently indexed, with publication counts by source, type, and language. Use this to discover what corpora are available before searching. | read-only |
get_scholarship_full_textScholarship full text | Fetch the full text of an OA legal publication by pub_id, on demand. Cached after first fetch so subsequent calls are instant. License-gated: only records under CC-BY-* (except CC-BY-ND), OA-Swiss-federal, or… | read-only |
get_materialienGet Materialien | Look up Materialien for a Swiss federal law article. Returns up to three things: `sources` = per-article digests of legislative intent (BV and BGFA only — 167 articles); `botschaft_documents` = the Federal Council… | read-only |
search_materialienSearch Materialien | Use this tool for DIGESTED legislative history — per-article intent summaries and key arguments, not verbatim text. COVERAGE IS NARROW: BV and BGFA digests (167 articles) plus BV debate transcripts, and nothing else.… | read-only |
search_legislationSearch legislation | Use this tool to find WHOLE LAWS by name or subject — 33,000+ federal and cantonal enactments from LexFind.ch; the entry point for cantonal questions ('Hundegesetz Bern', 'loi sur l'énergie Vaud'). Not for article-level… | read-only |
get_legislationGet legislation | Retrieve the FULL TEXT and article list of a specific Swiss law, federal or cantonal, by LexFind ID or SR/systematic number. For federal laws in the Fedlex mirror this is instant (local SQLite). For cantonal laws, the… | read-only |
browse_legislation_changesBrowse legislation changes | Browse recent legislation changes for a canton or federal level. Shows new laws, amendments, and abrogations with dates. | read-only |
search_practiceSearch administrative practice | Use this tool when the question involves federal ADMINISTRATIVE PRACTICE (Verwaltungspraxis): Wegleitungen, Kreisschreiben, Weisungen, Rundschreiben — agency guidance, not court decisions. 9,900+ documents. Covered: BSV… | read-only |
get_practiceGet administrative practice | Retrieve a single federal administrative-practice document by its doc_id (e.g. 'estv_ks_ks_nr_28', 'sem_weisungen_weisungen-aug-d', 'bsv_weisungen_6930_v20_de', 'seco_alv_avig_ale_de'). Returns full body text, title,… | read-only |
What https://mcp.opencaselaw.ch/mcp answered to tools/list, asked without credentials over MCP 2025-11-25. The token figure is the size of the list as sent, divided by four; a model sees about that much before it calls anything. Full definitions, input schemas included, are in the listing's JSON under mcpTools.
How its tools read to an agent 0 errors · 7 warnings · 2 notes
- warnTC11get_article_history1 parameter without a description: language
- warnTC14get_legislationallowed values are in the description, not an enum: systematic_number
- warnTC22citethe definition is about 2,056 tokens
- warnTC22get_decisionthe definition is about 1,505 tokens
- warnTC22get_lawthe definition is about 1,966 tokens
- warnTC22search_decisionsthe definition is about 2,655 tokens
- warnTC23server42 tools, about 22,255 tokens of definitions
- noteTC24server32 of 42 tools have no outputSchema
- noteTC29serverabout 1,312 tokens (5% of the definitions) are titles that repeat property or function names
The checks from /check and anchor check, run each day on the list above: about 22,229 tokens of definitions. Not part of the score yet. Check your own server.