Thomson Reuters and Free Law Project both connect legal databases to Claude via MCP

Thomson Reuters and Free Law Project have announced that their legal research platforms now connect directly to Claude, Anthropic's AI assistant, through the Model Context Protocol (MCP). This integration allows lawyers and legal researchers to access live legal databases without switching tools. The Model Context Protocol is an open standard that lets AI systems query live databases and retrieve current documents in real time, grounding AI responses in authoritative, up-to-date sources rather than relying solely on training data. Thomson Reuters built its integration around CoCounsel Legal, a professional AI system designed for law firms, corporate legal departments, and government agencies. The system meets "fiduciary-grade" standards and draws on 1.9 billion Westlaw and Practical Law documents, 1.4 billion KeyCite validity signals, and a patent-pending citation ledger. Thomson Reuters plans to rebuild the next generation of CoCounsel Legal on Anthropic's Claude Agent SDK, allowing the system to plan work, select tools, retrieve content, and adapt mid-workflow. Free Law Project, the nonprofit behind CourtListener, announced that its platform is now available as an MCP connector inside Claude. The integration is free to use and provides primary legal materials, including actual court decisions, PACER documents, oral argument audio and transcripts, and judge biographical data. Through the integration, Claude gains access to federal and state court decisions going back centuries, PACER data, citation networks, oral argument audio and transcripts, judge biographical and financial disclosure data, keyword and semantic search across the archive, real-time alerts for new filings and citations, and citation verification to reduce hallucinations. Thomson Reuters targets legal professionals who already subscribe to its services, while Free Law Project targets self-represented litigants, legal aid organizations, researchers, developers, and journalists. Free Law Project cautions that the MCP is infrastructure, not legal advice, and that "Claude is not a lawyer." Thomson Reuters Chief Technology Officer Joel Hron argues that general-purpose AI tools should handle early exploration, while professional systems like CoCounsel should handle final validation. Free Law Project says the combination of Claude and verified legal data "has genuine potential to support access to justice work."

(Source：Complete Ai Training)