Research & Cite Check

The Research surface in Irys One gives legal professionals three integrated tools for legal research:

Case Law Search

Run dual search across U.S. case law powered by CourtListener's database of 50M+ citations:

• Keyword / boolean search - traditional query operators for precise control.
• AI semantic search - natural language questions that the AI converts into relevant results.

Both searches run in parallel so you get comprehensive coverage in a single query. Filter by jurisdiction, date range, judge, topic, and more.

Cite Check

Verify every citation in a document or research output:

• Existence check - confirms the cited case actually exists (anti-hallucination).
• Format accuracy - validates that the citation string matches the real case.
• Good law status - flags cases that have been overruled, reversed, or otherwise negatively treated.

Cite Check catches hallucinated or stale references before they reach a filing.

Deep Research (Legacy)

A legacy AI Assistant mode for multi-source, iterative research:

• Searches across internal documents, case law, web sources, and statutes.
• The AI reasons about knowledge gaps and performs additional queries automatically.
• Produces structured research reports with inline citations.

For most research queries, Agent now produces better-cited, faster answers. See the AI Modes overview for how Agent compares to Research and Deep Research.

Next steps