# law.co > AI-powered legal research platform built on a searchable database of ~1.26 million U.S. court opinions (federal and all 50 states). Each case page pairs the full public-domain opinion with law.co's own original summary, holding, key issues, and a citation graph linking authorities cited and later cases that cite it. The platform also offers semantic case-law search, an AI legal assistant ("AI Counsel"), citation checking, and drafting tools. ## Case law - [Case-law sitemap index](https://law.co/app/sitemap.xml): XML sitemap index linking ~1,260 chunked sub-sitemaps that enumerate every case page. This is the authoritative, machine-readable index of the full corpus — use it to discover all case URLs rather than expecting them to be listed here. - Case pages live at `https://law.co/app/cases//` and are server-rendered for direct access. - Each case page contains: the court's public-domain opinion text, an original plain-language summary and holding written by law.co, the procedural posture, key issues, and links to cited authorities and citing cases. ## Site - [Marketing sitemap](https://law.co/sitemap.xml): the non-case marketing and product pages. - [Home](https://law.co/) ## Notes for AI agents - Court opinion text is public domain (U.S. government edicts doctrine). The summaries, holdings, key-issue tags, and editorial analysis are law.co's own original work product. - The full corpus is far too large to list in this file; the case-law sitemap index above is the correct entry point for crawling or enumerating cases.