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Catch fake case citations in a legal brief

Extracts the US case citations from a brief paragraph, including one to the fabricated Varghese v. China Southern Airlines, and checks each against Harvard's Caselaw Access Project: does the case exist, do the name and year match, and does the quoted language appear in the opinion. Paste your own brief.

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Legal citation and quotation verifier (US case law)
Legal citation and quotation verifier (US case law)davidcondrey/wl-legal-cite-verifier
Agent
Price (USD)
Result
Provenance
Text
Number
Boolean
List
Object

Input

Text:Plaintiff's position follows from Brown v. Board of Education, 347 U.S. 483, 495 (1954) ("Separate educational facilities are inherently unequal."). Defendant's liability under the Montreal Convention is established by Varghese v. China Southern Airlines Co., Ltd., 925 F.3d 1339 (11th Cir. 2019).
Quotes
citation:347 U.S. 483
quote:Separate educational facilities are inherently unequal.

Output fields

Agent
Price (USD)
Result
Provenance

How it works

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The final output is delivered in JSON, CSV, or Excel format, ready to be plugged into your workflow. You can also run the "Catch fake case citations in a legal brief" task via API.

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Gmail

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Apify MCP

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LangChain

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LlamaIndex

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Flowise

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Pinecone

OpenAI

OpenAI

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Mastra

Clay

Clay

Frequently asked questions

U.S., S. Ct., L. Ed., F., F.2d, F.3d, F.4th, F. Supp. and the state and regional reporters.

Yes. It looks for each quoted passage in the opinion text and reports whether it was found.