A programmatic deep research engine. Add web search and AI-powered research to your app—let your users get answers with citations, or run comprehensive multi-step research.
Web data only. This searches publicly available web content. For comprehensive legal research (case law, statutes, regulations), use specialized platforms like Lexis, Westlaw, or OpenLaws.
Quick start
import Casedev from 'casedev';
const client = new Casedev({ apiKey: process.env.CASEDEV_API_KEY });
// Answer your user's question with citations
const answer = await client.search.v1.answer({
query: userQuestion,
includeDomains: ['law.cornell.edu', 'findlaw.com']
});
// Return answer with sources to your user
console.log(answer.answer);
// "In California, the statute of limitations for medical malpractice
// is 3 years from the date of injury or 1 year from discovery [1]..."
console.log(answer.citations);
Endpoints
Use cases
Build these capabilities for your users:
| Feature | Endpoint | Example |
|---|
| Research assistant | /research | Let users research topics and get comprehensive reports |
| Fact verification | /answer | Verify claims with sourced answers |
| News monitoring | /search | Monitor web for relevant news and updates |
| Background research | /search | Find public records and business information |
