Global content and technology company Thomson Reuters today announced an expanded partnership with Anthropic, introducing a new Model Context Protocol (MCP) integration that directly connects AI assistant Claude to its professional legal AI product, CoCounsel Legal. This integration allows lawyers to access CoCounsel Legal’s authoritative content and compliance workflows directly within Claude’s interface, enabling seamless transitions from exploration to execution while maintaining professional standards. David Wong, Chief Product Officer at Thomson Reuters, noted that the company is building CoCounsel Legal into a trust-level core system for legal work, connecting it with the tools lawyers use every day.
The next-generation CoCounsel Legal will be fully rebuilt on Anthropic’s Claude Agent SDK, allowing it to autonomously plan tasks, select tools, retrieve authoritative content, and adjust dynamically within workflows. The system can draw on a vast legal knowledge base that includes 190 million Westlaw and Practical Law documents and 1.4 billion KeyCite validity signals, reasoning based on the expertise of more than 2,600 Thomson Reuters legal professionals to produce traceable, cited deliverables. This MCP integration means lawyers can now receive trust-level AI support directly in the Claude interface, combining general AI capabilities with the strict accuracy, accountability, and trust standards required in the legal industry.
