# SWIRL Legal > SWIRL 5 is the knowledge-authority layer for legal AI. Tools like Claude, Microsoft Copilot, and Harvey can draft, summarize, and run workflows, but they do not know which document, version, or precedent a law firm or legal department has actually approved. SWIRL 5 sits beneath those tools and provides that answer - federated, permission-aware retrieval with traceable citations across Microsoft 365, SharePoint, iManage, NetDocuments, legal publishers, and curated firm knowledge - without copying or re-indexing the underlying records. SWIRL Legal positions SWIRL as an open architecture for legal AI built on three clean layers: (1) connectors that query each system with the user's existing permissions; (2) a federation and re-ranking layer that produces an authoritative result set; and (3) an answer layer that can be wired to Claude for Legal, Microsoft 365 Copilot, Harvey, or any LLM the firm chooses. Every answer is traceable to a source document and version. Sister sites: the main SWIRL product site is https://swirlaiconnect.com (llms.txt: https://swirlaiconnect.com/llms.txt), and product documentation is at https://docs.swirlaiconnect.com (llms.txt: https://docs.swirlaiconnect.com/llms.txt). ## Product - [Home - Knowledge Authority for Legal AI](https://swirllegal.com/): SWIRL 5 overview, the three-layer architecture, featured legal-AI case studies, and a contact form. - [Consulting Services](https://swirllegal.com/consulting): Installation, configuration, SOC-2 hosting, and custom development for Mike (open source), SWIRL Enterprise, and Claude-for-Legal deployments, delivered with SWIRL's agentic development process. Positioned as an open-source Harvey alternative with enterprise knowledge behind it. ## Insights - [Legal AI Blog](https://swirllegal.com/blog): Articles on knowledge authority, traceable citations, compliance, Microsoft 365 records handling, copilots vs. authoritative retrieval, and federated search for law firms and legal teams. Featured posts include "The Knowledge Authority Problem: Why Claude for Legal Changes the Stack," "Copilots Add Abstraction. SWIRL Removes It," "Which Version Is Right? Introducing Pinned Results in SWIRL," "If You Can't Trace It, You Don't Have AI. You Have Liability," and "Microsoft 365, Compliance, and AI: Don't Copy the Records." ## Optional - [Sitemap (XML)](https://swirllegal.com/sitemap.xml): Full URL list for swirllegal.com. - [robots.txt](https://swirllegal.com/robots.txt): Crawl policy. - [SWIRL product site](https://swirlaiconnect.com/): Federated AI search and RAG across 150+ enterprise sources. - [SWIRL documentation](https://docs.swirlaiconnect.com/): Installation, configuration, MCP server, RAG, and developer reference.