⚖️ Chrome Extension · Free · No AI required

Catch bad citations before they embarrass you

Legal Citation Checker scans any web page, extracts every legal citation, and verifies each one against CourtListener, Cornell LII, and eCFR — flagging overturned, invalid, or superseded authority in real time.

⬇ Add to Chrome — Free See how it works
📚 CourtListener — case law
🎓 Cornell LII — statutes
📋 eCFR — regulations
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Citation Checker
4 valid 1 caution 1 overturned
Lemon v. Kurtzman, 403 U.S. 602 (1971)
⚠ Effectively overturned
Kennedy v. Bremerton School Dist. (2022) replaced the Lemon test
Miranda v. Arizona, 384 U.S. 436 (1966)
✓ Good law — verified via CourtListener
1,200+ citing references found
29 C.F.R. § 1910.1030
⚡ Amended — check current eCFR version
Last amended July 1, 2024
42 U.S.C. § 1983
✓ Current statute — Cornell LII confirmed
No pending amendments detected
What it does

Verify any citation in seconds

Three public APIs. Zero AI hallucinations. Real verification against authoritative legal databases, all for free.

🔎

Auto-extraction

Recognizes US case citations (reporter format), USC statutes, CFR regulations, and state code formats on any page — brief, article, or website.

✅

Live verification

Each citation is checked against CourtListener's case index, Cornell LII's statute database, and eCFR's current regulation text in real time.

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Overturned case flags

CourtListener's negative treatment data surfaces cases that have been reversed, overruled, or significantly limited by subsequent decisions.

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Export report

Copy a plain-text summary of all citations and their status to the clipboard — paste it into your memo, email, or case management system.

How it works

From page to verified citations

1

Navigate to any legal page

Open a case, brief, law review article, or regulation — anything with legal citations in the text.

2

Citations auto-extracted

The extension parses the page text and identifies every recognized legal citation format using pattern matching.

3

Verified against public APIs

Each citation is cross-checked via free public APIs. Results appear color-coded: green (good), yellow (caution), red (overturned/invalid).

Who it's for

For anyone who relies on legal authority

Built for legal professionals who need to trust their citations — and verify ones they find online.

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Attorneys

Verify opposing counsel's citations and your own research before filing or sending.

📋

Paralegals

Check citations in draft briefs and client communications quickly without Westlaw access.

🎓

Law students

Validate research for law review notes and moot court briefs using real authoritative sources.

✍️

Legal writers

Fact-check citations in legal journalism, blogs, and commentary before publication.

FAQ

Common questions

Does this replace Westlaw or Lexis citator services?
No — and we're clear about that. This is a free, best-effort check using public APIs. CourtListener's negative treatment data is less comprehensive than commercial citators. Use this to catch obvious problems and as a first-pass screen; for critical filings, always use a paid citator service.
Which citation formats are supported?
US federal and major state reporter formats (e.g., 384 U.S. 436, 42 F.3d 100), United States Code citations (42 U.S.C. § 1983), Code of Federal Regulations (29 C.F.R. § 1910), and common state code patterns. International citations are not currently supported.
Does it send the page content to a server?
Only the extracted citation strings are sent to public APIs (CourtListener, Cornell LII, eCFR) for verification. The full page text is processed locally. No page content, URLs, or browsing data is collected or stored by AIBridges.
How current is the data?
The extension queries live APIs each time you check — so the data is as current as the underlying databases. CourtListener and eCFR are updated regularly. Cornell LII tracks federal statute changes. API response times are typically under 2 seconds.

Stop trusting bad citations

Free. No account. No subscription. Powered by public legal databases.

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