Building Legal Innovation with No Code: Highlights from the LLM × Law Hackathon 2025
From June 20 to 22, 2025, Momen joined the LLM × Law Hackathon at Cambridge Judge Business School — a weekend packed with collaboration, prototyping, and new ideas. As both a featured tool and workshop host, Momen helped empower teams to move fast and build smarter.
What is the LLM × Law Hackathon?
The LLM × Law Hackathon is a global event designed to spark collaboration between legal minds and technologists. Held at Cambridge Judge Business School, it brought together law students, professionals, AI researchers, and builders from around the world. The mission? To explore how law and emerging tech can work together — and to equip legal experts with the tools they need to bring their ideas to life.
Organized by Hack the Law (an initiative of King’s Entrepreneurship Lab at the University of Cambridge), the event is a European continuation of the legal innovation movement that began with CodeX at Stanford.
Over the course of 48 hours, participants worked in teams to develop solutions to real legal and policy challenges. Two prize tracks offered tangible support and visibility:
Hacker Track: £10,000 for 1st place, £5,000 for 2nd, £2,500 for 3rd, plus a pitch opportunity at LegalTechTalk, sponsor prizes, and a £2,000 Access to Justice (A2J) Special Award
Startup Track: Private mentoring, go-to-market strategy feedback, and introductions to legaltech collaborators
Momen: Bridging AI Gaps with Visual Workflows for Non-Technical Builders
Momen wasn’t just a sponsor, it was one of the core tools used at the hackathon. All participants received $100 in credits to prototype their ideas using Momen’s no-code builder. For many participants—legal professionals, researchers, and students without a coding background—Momen offered a fast and accessible way to turn their ideas into real applications within the limited time of the hackathon.
In today’s AI-powered development landscape, tools like Lovable, Replit, and ChatGPT make it easy to draft UI sketches or generate quick snippets. But for legal experts trying to build functional apps—with real workflows, agent logic, and integrations—the complexity can quickly add up.
That’s where Momen complemented the stack. It offered a uniquely visual environment that brought together data modeling, AI agent workflows, and API connections in one place. For participants, this meant they could prototype backend logic and intelligent behavior without code, while also understanding and adjusting how everything worked. Combined with the UI speed of Lovable or the flexibility of LLMs, Momen helped teams build the brains of their legal tools—fast, visually, and with full clarity.
Talk Recap: Exploring the Legal Tech Stack
Kickoff Talk: Understanding the Legal Tech Stack
On June 20, Yaokai Jiang—Cambridge alum and founder of Momen—opened the hackathon with a session designed to give everyone a clear picture of the technology landscape. Rather than diving straight into code, he broke down the structure of real-world applications: how the backend, database, APIs, and frontend all come together.
This kickoff talk helped participants—many from legal and non-technical backgrounds—understand how different tools like GPT, Gemini, Momen, Lovable fit into the broader stack. It set the stage for the weekend, giving teams the context they needed to choose the right tools and start building with confidence.
Hands-On Workshop: AI-Powered Witness Statement Analysis
Later that day, Yaokai led a hands-on session featuring a demo of an AI-powered witness statement analysis tool built entirely on Momen. The tool addressed a common litigation challenge: turning long, unstructured witness statements into clear, actionable timelines.
In the demo, raw text from multiple witnesses was input into the app. With one click, Momen triggered an AI agent that parsed the statements, extracted key events, and structured them into a visual timeline. Users could explore this timeline to view source quotes, identify contradictions, and assess conflict areas which are highlighting in red for quick reference. The result was a compelling demonstration of how legal professionals can prototype powerful workflow tools quickly, using AI not just to summarize, but to reason, flag inconsistencies, and visualize complexity.
Spotlight: Hackathon Projects Built with Momen
Lawrion — Taming the Regulatory Chaos
Team eLegal tackled the Linklaters challenge: summarising the impact of legal developments. With a focus on regulatory updates affecting banks, financial institutions, and companies influenced by Supreme Court decisions or FCA and Bank of England publications, their goal was to help organizations stay ahead of the curve.
Their solution, Lawrion, offered instant, structured summaries and risk-based categorization of incoming regulations. This helped eliminate delays in identifying critical changes, reduced compliance risks, and empowered law firms like Linklaters to deliver faster, sharper, and more strategic advice to clients.
The team used Lovable to create a front-end landing page, while Momen was used to quickly prototype the AI-driven workflow. When it came to building the core agent logic, Momen provided the flexibility and power needed to deliver a working proof-of-concept tailored for legal professionals.
Sentinel — Navigating Risk in Global Contracts
The Sentinel team addressed a different kind of complexity: the risk that global events pose to long-term contracts. Their idea was to monitor political and economic developments and map them against existing contractual terms to flag potential risks.
They built a workflow that allowed users to upload contracts, then combined Groq and Vertex AI to track relevant external events. Momen served as the workflow engine and logic builder, while Lovable was used to create a quick front-end display. The demo provided a risk dashboard where legal teams could explore the implications of new developments and adjust their strategy accordingly.
Takeaways
The LLM × Law Hackathon showed how quickly legal innovation can happen when the right tools are in the hands of experts. It’s not about writing code, it’s about connecting ideas with the right infrastructure.
With platforms like Momen, Lovable, and GPT, legal professionals and domain specialists were able to prototype real applications in just hours.
Momen is proud to support this growing community of legal builders. What we saw in Cambridge is just the beginning.
Try It Yourself
Interested in building your own legal tech tool?
Head over to momen.app and start creating—no code needed.
