GLO Law

GLO Law gives Claude a free U.S. legal research library built for people who don’t have one: nearly 11 million court opinions, about 2.1 million statute sections, regulations from 40 states and the Code of Federal Regulations, and corrections policies from 41 states, the District of Columbia and the Federal Bureau of Prisons.

Ask Claude to find a case by name, keyword or topic, read the full opinion, resolve a citation, see which later opinions cite a case and how they describe it, look up a statute or regulation by citation, or search a department’s policies.

Two tools check authority. treatment finds later courts that reported a case overruled, reversed or vacated and quotes each court’s own sentence, so you can read the ruling for yourself. brief_check runs the same check on every citation in a pasted brief, looks for each quotation in the stored opinion, and points out personal identifiers that court rules keep out of public filings.

Every answer carries a note on its source and how far its coverage reaches. Case law runs through September 30, 2026 and is refreshed each quarter. Regulations come from each state’s published text, and department policies are kept separate from statutes and regulations, so it’s clear what kind of rule you’re reading.

GLO Law is a research tool and doesn’t give legal advice. It takes a Google sign-in and doesn’t log your searches.