Legal Research API
Collect court opinions, regulatory filings, statutes, and legal citation networks from public legal databases to build legal intelligence tools, compliance monitors, and research datasets.
How It Works
Target legal databases
Access public court opinions, regulatory filings, and legal statutes from government and public legal portals.
Extract case metadata
Pull case names, docket numbers, court, filing date, judges, parties, holding, and citation references.
Build legal intelligence
Aggregate precedent networks, regulatory trend analysis, and compliance risk signals from extracted data.
Quick Start
curl -X POST https://alterlab.io/api/v1/scrape \
-H "X-API-Key: YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"url": "https://www.courtlistener.com/opinion/1234567/smith-v-jones/",
"extract": {
"case_name": "string",
"court": "string",
"date_filed": "string",
"holding": "string",
"citations": "string[]"
}
}'Need an API key? — no credit card required.
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Frequently Asked Questions
What legal data sources are publicly accessible?
Federal and state court opinions (CourtListener, state court portals), Federal Register regulatory filings, SEC EDGAR corporate filings, USPTO trademark and patent records, and legislative databases (Congress.gov, GovInfo).
Can I extract full text from court opinions?
Yes. Public court opinion databases provide full text of judicial opinions, including facts, analysis, holding, and dissents. Extract these for full-text search, citation analysis, and legal AI training datasets.
Responsible Use
AlterLab is designed for extracting publicly available data. Always review the terms of service for any website you access, respect robots.txt directives, and ensure your use case complies with applicable laws in your jurisdiction.
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Pricing
From $0.0002/request. No subscriptions. Balance never expires.
Your first scrape.
Sixty seconds.
$1 free credit — up to 5,000 scrapes. No credit card.
Just a POST request.
No credit card required · $1 free credit, up to 5,000 scrapes · Balance never expires