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io.github.Kevinx702/legalcite

Official registry Government and legal

Verify legal case citations against real court records; flag fake/hallucinated cites.

Source code Website Documentation

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

NPM package legalcite-mcp
Claude Code 
claude mcp add legalcite -- npx -y legalcite-mcp@0.1.0
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "legalcite": {
            "command": "npx",
            "args": [
                "-y",
                "legalcite-mcp@0.1.0"
            ]
        }
    }
}

Documentation

From the project's README on GitHub, refreshed weekly. Links open on GitHub.

Contents
  1. LegalCite
  2. Verdicts
  3. How it resolves
  4. Layout
  5. Config (Vercel env — all optional for the MVP)
  6. Pricing

LegalCite

Stop your AI from citing fake cases. LegalCite checks every case citation in legal text against real court records (CourtListener) and flags hallucinated/fake or misattributed cites. A REST API + an MCP server.

  • Live: https://legalcite-one.vercel.app
  • Verify API: GET /api/verify?text=<paragraph> (or ?citation="410 U.S. 113"; also POST {text})
  • MCP: verify_citations(text) → npm legalcite-mcp
  • Data: CourtListener (Free Law Project) — free public U.S. court records.

Verdicts

verdictmeaning
realthe case exists and (if named) the name matches
not-foundno such case — likely hallucinated
mismatchcitation is real, but the case name in the text is wrong

How it resolves

  1. Token-free (default): reporter-aware regex extracts citations → each resolved via CourtListener's public /c/{reporter}/{vol}/{page}/ finder (redirects to the opinion when real, 404 when not).
  2. Token mode (optional): set COURTLISTENER_TOKEN (free) → uses CourtListener's citation-lookup endpoint (Eyecite extraction + full metadata).

It never fabricates — an unresolved citation is reported not-found, never invented.

Layout

api/verify.js          REST endpoint (quota + verify)
api/health.js          liveness + CourtListener check
api/checkout|key|stripe-webhook.js   Stripe Pro billing
lib/verify.js          citation extraction + CourtListener resolution (core)
lib/store.js           Redis quota + key store (fail-open without REDIS_URL)
lib/stripe.js          lazy Stripe client
mcp/server.js          MCP stdio server — verify_citations tool
public/                landing, docs, pricing, llms.txt
scripts/setup-stripe-product.js   one-time Stripe product/price (test key)

Config (Vercel env — all optional for the MVP)

  • COURTLISTENER_TOKEN — free; enables richer citation-lookup + metadata.
  • REDIS_URL — Upstash; enables hard daily quota + caching (fail-open without it).
  • STRIPE_SECRET_KEY / STRIPE_PRICE_ID / STRIPE_WEBHOOK_SECRET — Pro billing.

Pricing

Free: 20 checks/day by IP. Pro: 2,000/day, $19/mo, 7-day trial.

Not legal advice. Verifies citation existence/metadata only — not legal correctness or good-law status.

Frequently asked questions

What is io.github.Kevinx702/legalcite?

Verify legal case citations against real court records; flag fake/hallucinated cites.

How do I install io.github.Kevinx702/legalcite?

It runs on your machine. In Claude Code: claude mcp add legalcite -- npx -y legalcite-mcp@0.1.0. For other clients, paste the JSON configuration from this page into their MCP settings.

Does io.github.Kevinx702/legalcite need an API key?

Its registry entry lists no required key or secret. Some features may still need an account with the service it connects to.

Is io.github.Kevinx702/legalcite open source?

Its code is public on GitHub, but the repository does not declare a standard license.

Who maintains io.github.Kevinx702/legalcite?

It is published by Kevinx702. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.