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Citation Safe Verifier

com.citationsafe/verifier
Recht & Compliance Suche & Recherche Öffentlich und erreichbar MCP 2025-11-25

Was dieses MCP kann

Verifies legal citations against primary sources for existence, quoted-text matches, and, on supported tiers, proposition support.

Funktionen

Tools

8 Tools
batch_verify_citations
Verify legal citations across multiple texts (batch)
Runs the same 3-layer citation verification as verify_citation across multiple texts in a single call. Each item is billed against your CitationSafe usage exactly like an individual verify_citation call — batching never bypasses your plan's monthly limit. Max 10 items per batch, 64,000 characters per item. Requires a signed-in CitationSafe account (Authorization: Bearer <access_token>) — anonymous batch calls are not supported, use verify_citation for anonymous single-text checks.
Eingabeschema 
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['texts'], 'properties': {'texts': {'type': 'array', 'items': {'type': 'string', 'maxLength': 64000, 'minLength': 1}, 'maxItems': 10, 'minItems': 1, 'description': 'Array of texts to verify, each processed as a separate verification (max 10 items, 64,000 chars each)'}}}
get_verification
Get a past CitationSafe verification report by ID
Retrieves a previously run CitationSafe verification (by the verificationId returned from verify_citation/verify_document, or from a citationsafe.com/v/{id} share link) and returns its full per-citation results.
Nur Lesen
Eingabeschema 
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['id'], 'properties': {'id': {'type': 'string', 'format': 'uuid', 'pattern': '^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$', 'description': 'Verification ID'}}}
is_this_case_real
Check whether a single case citation is real
Deterministic existence check (Layer 1 only, no LLM) for one legal citation against CourtListener's primary-source database. Answers the single question "is this case real" for one citation — for multi-citation quote-checked verdicts across a whole brief, use verify_brief instead. Free tier: 5 checks/day per IP, no key required. For unlimited access, pass an API key as "Authorization: Bearer <key>" (contact support@citationsafe.com to request one).
Nur Lesen
Eingabeschema 
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['citation'], 'properties': {'citation': {'type': 'string', 'maxLength': 2000, 'minLength': 1, 'description': 'A single citation, e.g. "410 U.S. 113" or "Roe v. Wade, 410 U.S. 113 (1973)"'}}}
search_phantoms
Search known AI-hallucinated (phantom) case citations
Searches CitationSafe's phantom-citation registry — fabricated case names/citations that have shown up in real, sanctioned AI-hallucination incidents — by case name or the AI system that produced them. Read-only, public data. Returns an empty array (not an error) if nothing matches or the registry has no entries yet.
Nur Lesen
Eingabeschema 
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['query'], 'properties': {'query': {'type': 'string', 'maxLength': 200, 'minLength': 1, 'description': 'Free-text match against the phantom case name or the AI system that generated it'}}}
search_sanctions
Search the AI-hallucination court sanctions database
Searches CitationSafe's database of real court sanctions/orders arising from AI-hallucinated legal citations, by court name, party/case name keyword, or free-text keyword. Read-only, public data — same dataset backing citationsafe.com/sanctions-database.
Nur Lesen
Eingabeschema 
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'properties': {'court': {'type': 'string', 'maxLength': 200, 'minLength': 1, 'description': 'Filter by court name (partial match, e.g. "S.D.N.Y.")'}, 'query': {'type': 'string', 'maxLength': 200, 'minLength': 1, 'description': 'Free-text keyword to match against the case name'}}}
verify_brief
Verify every citation in a brief or excerpt
Runs existence (Layer 1) and quote-match (Layer 2) checks — both deterministic, no LLM — on every citation found in the given text and returns one verdict per citation. The multi-citation counterpart to is_this_case_real. Proposition support (Layer 3) is not included on this free/API-key surface; sign in at citationsafe.com for full 3-layer verification via verify_citation. Free tier: 5 checks/day per IP (one verify_brief call = one check, regardless of how many citations the text contains); an API key bypasses the daily cap.
Nur Lesen
Eingabeschema 
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['text'], 'properties': {'text': {'type': 'string', 'maxLength': 64000, 'minLength': 1, 'description': 'Raw text (brief excerpt, motion, memo) containing one or more legal citations'}}}
verify_citation
Verify legal citations in text
Checks every legal citation in the given text against primary sources: does the cited case exist (Layer 1, CourtListener database lookup — deterministic, no LLM), does a quoted passage appear in the source opinion (Layer 2), and — on paid CitationSafe tiers — does the case support the proposition it's cited for (Layer 3). Returns VERIFIED / UNCONFIRMED / UNCONFIRMED — OUTSIDE COVERAGE / SOURCE UNAVAILABLE per citation, never a bare true/false, with source links. Not legal advice.
Eingabeschema 
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['text'], 'properties': {'text': {'type': 'string', 'maxLength': 64000, 'minLength': 1, 'description': 'Raw text containing one or more legal citations to verify'}}}
verify_document
Verify legal citations in a document URL
Fetches a document (PDF, DOCX, or plain text) from a URL and runs the same 3-layer citation verification as verify_citation. Use this when you have a link to a brief rather than pasted text.
Externer Zugriff
Eingabeschema 
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['url'], 'properties': {'url': {'type': 'string', 'format': 'uri', 'description': 'URL of the PDF, DOCX, or text document to fetch and verify'}}}
Verlauf

Letzte Tool-Änderungen

Hinzugefügt
search_phantoms
17. September 2026 12:34
Hinzugefügt
verify_brief
17. September 2026 12:34
Hinzugefügt
is_this_case_real
17. September 2026 12:34
Hinzugefügt
search_sanctions
17. September 2026 12:34
Hinzugefügt
batch_verify_citations
17. September 2026 12:34
Hinzugefügt
get_verification
17. September 2026 12:34
Hinzugefügt
verify_document
17. September 2026 12:34
Hinzugefügt
verify_citation
17. September 2026 12:34
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