Web Research

AI-powered research with citations

The problem: You need to research a legal issue across multiple jurisdictions. Manual research takes days.

The solution: Use AI-powered web search to get answers with citations, or run deep research for comprehensive analysis.

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 answer with citations

Let your users get AI-generated answers to questions:

cURL

curl -X POST https://api.case.dev/search/v1/answer \
  -H "Authorization: Bearer $CASEDEV_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "query": "What is the statute of limitations for medical malpractice in California?",
    "includeDomains": ["law.cornell.edu", "findlaw.com", "justia.com"]
  }'

Deep research

For complex topics, offer your users comprehensive multi-step research:

cURL

# Start research
RESEARCH=$(curl -s -X POST https://api.case.dev/search/v1/research \
  -H "Authorization: Bearer $CASEDEV_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "instructions": "Research non-compete agreement enforceability across US states",
    "model": "pro"
  }')

RESEARCH_ID=$(echo $RESEARCH | jq -r '.researchId')

# Get results
curl "https://api.case.dev/search/v1/research/$RESEARCH_ID" \
  -H "Authorization: Bearer $CASEDEV_API_KEY"

Web search

For simple searches, expose the search endpoint directly:

cURL

curl -X POST https://api.case.dev/search/v1/search \
  -H "Authorization: Bearer $CASEDEV_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "query": "SEC cryptocurrency enforcement actions 2024",
    "numResults": 20,
    "startPublishedDate": "2024-01-01",
    "excludeDomains": ["reddit.com", "twitter.com"],
    "includeText": true
  }'

Research models

Choose based on your users’ needs:

Model	Time	Depth	Use case
fast	~30 sec	Basic	Quick fact-checking
normal	~2 min	Good	Standard research
pro	~5 min	Best	Complex topics

Tip: Use includeDomains to restrict results to authoritative sources like government sites and legal databases.