United States · Case law
Federal case law research, with verifiable citations
Search opinions from the Supreme Court, the Courts of Appeals and federal district courts — sourced from CourtListener and the Free Law Project, with a citation you can check for every answer.
What you can search
Supreme Court (SCOTUS)
Opinions of the Court, concurrences and dissents — with docket and citation metadata.
Courts of Appeals
All thirteen circuits, including unpublished dispositions where available.
District courts
Federal trial-court opinions indexed alongside the appellate decisions that cite them.
Citation checking
Every case the AI mentions is verified against the database before it appears in an answer. No invented citations.
What lawyers ask
FAQ
Where does the case law come from?
CourtListener and the Free Law Project — the same open corpus used by courts, journalists and researchers. Opinions sync within days of publication.
Does the AI ever invent a case?
No. Every citation in an answer is checked against the database first. If a case cannot be verified, it is removed from the answer and the answer says so.
Are state courts covered?
Federal courts are the default. State coverage is expanding — ask the AI and it will state plainly what exists for the jurisdiction you need.