Building a production-ready legal RAG app... in one prompt

Legal research is brutally complex by design. Finding a specific clause in thousands of contracts requires extreme precision - you can't just retrieve semantically similar text from 2022 when the user asked about 2024 agreements. Traditionally, building a production-ready legal assistant takes months. You have to orchestrate retrievers, manage conversation state, write complex query logic. It's a massive undertaking. But when our finance team asked us to build them something to navigate internal contracts, we used the 𝗤𝘂𝗲𝗿𝘆 𝗔𝗴𝗲𝗻𝘁 to build a production-ready application in 36 hours. Then with 𝗪𝗲𝗮𝘃𝗶𝗮𝘁𝗲 𝗔𝗴𝗲𝗻𝘁 𝗦𝗸𝗶𝗹𝗹𝘀, we made it possible to build the entire thing with a single prompt in Claude Code or Cursor. In the video, I walk through building it from scratch. The coding agent handles everything: • Downloads and processes the CUAD legal contract dataset • Creates three collections with proper schema (Commercial, Corporate & IP, Operational) • Embeds PDFs with ColQwen multivector model + Muvera compression • Sets up the Query Agent with ask mode • Builds the FastAPI backend with async client and dependency injection • Creates the Next.js frontend with streaming and source display The whole build takes roughly 12 minutes and about 20k tokens on Sonnet 4.6. Blog post with full details: https://weaviate.io/blog/legal-rag-app?utm_source=youtube&utm_medium=vs_video&utm_campaign=paralegal&utm_content=680839433 00:00 - Intro 00:30 - What's hard about legal RAG? 01:30 - The Query Agent 02:18 - Overview: App Architecture 03:30 - Tutorial: Setup 03:58 - The Prompt 04:49 - Tutorial: The Process 05:15 - Tutorial: The Results 05:40 - Conclusion ▬▬▬▬▬▬▬▬▬▬▬▬ CONNECT WITH US ▬▬▬▬▬▬▬▬▬▬▬▬ - Visit http://weaviate.io/ - Star us on GitHub https://github.com/weaviate/weaviate - Stay updated and subscribe to our newsletter: https://newsletter.weaviate.io/ - Try out Weaviate Cloud for free here: https://console.weaviate.cloud/ Got a question? - For