AI Malpractice Risk Reduction Software
Draft with AI.
But never file without CiteCheck.
CiteCheck verifies citations, validates case holdings, and analyzes legal briefs for dangerous AI-generated errors before filing.
Real citation. Wrong law. CiteCheck flags it.
The Problem
Judges are sanctioning lawyers for AI-generated fake citations.
Mata v. Avianca, 22-cv-1461 (S.D.N.Y. 2023)
Two New York attorneys submitted a brief containing six citations fabricated by ChatGPT — including made-up case names, fake quotes, and invented holdings. Judge Castel sanctioned the firm $5,000 and ordered the lawyers to notify each judge falsely identified as an author. The lawyers admitted they had not verified the citations.
And it’s happening more, not less. Fabricated AI citations have now drawn sanctions in federal courts across the country — from the Second Circuit to the Ninth.
Rule 11 doesn’t care that the AI did it.
Your name is on the brief.
The Marbury Catch
Same case. Two verdicts.
Only one catches the mistake.
A real attorney brief cited Marbury v. Madison to support warrantless home searches based on a neighbor’s noise complaint. The citation is real. The law it stands for is something else entirely.
Section 1
Citation Verification
Marbury v. Madison, 5 U.S. 137 (1803)
Confirmed real via CourtListener
The case exists. The volume, reporter, and year are accurate. A basic citation checker stops here.
Section 2 · Premium
Proposition Check
Marbury v. Madison, 5 U.S. 137 (1803)
✗ Does NOT supportProposition from the brief
“Police officers may conduct warrantless searches of private homes whenever they receive a noise complaint from a neighbor.”
Analysis
Marbury v. Madison concerns judicial review, mandamus jurisdiction, and judicial remedies for withheld commissions. It has nothing to do with the Fourth Amendment, warrantless home searches, or noise complaints.
From the case
“It is emphatically the province and duty of the judicial department to say what the law is.”
Confidence: High
A citation checker would have rubber-stamped this brief.
CiteCheck reads the actual holding — and catches the mistake before you file.
How It Works
Three checks run on every brief. Each one answers a different question.
Upload & Redact
Upload your PDF or Word document. CiteCheck automatically redacts privileged and confidential material before any analysis begins.
Three-Layer Analysis
Every brief runs through three independent checks:
- 1
Citation Verification
Does the case exist? Is the cite accurate?
- 2
Proposition Check
Does the case actually support what the brief cites it for?
- 3
Brief Quality Analysis
Bad reasoning, factual gaps, missing case-specific facts.
Get Your Report
Three clearly-separated sections matching the three checks above, with red badges on anything that needs your attention. Download as PDF or view in your dashboard.
Zero retention. Zero risk.
We're not just another public-facing AI tool.
Security & Privilege Guarantee
Your documents are safe with us.
Auto-purged after analysis
Your uploaded briefs are deleted by default once analysis is complete. Opt-in retention is available for users who want it — never the other way around.
Built around attorney-client privilege
Privileged material is redacted before any analysis runs. The system is designed to respect and protect your duty of confidentiality from the upload step forward.
Powered by the Anthropic API
CiteCheck runs on the Anthropic API, which does not train its models on customer data. Your briefs never feed a model.
Powered by the Perplexity API
No training on customer data — query data is not retained or used to train, retrain, or fine-tune any models.
Encrypted in transit via TLS
All uploads and downloads happen over modern TLS. Your documents are never transmitted in the clear between your browser and our servers.
CiteCheck is an AI-assisted document review tool. Results are not guaranteed and do not constitute legal advice. Attorneys are solely responsible for verifying all citations and content before filing. CiteCheck is not liable for any errors or omissions in the analysis.