Legalish

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Inspiration

We were inspired by a simple truth: almost no one reads the terms and conditions they agree to — yet they can have massive legal consequences. We wanted to build a tool that gives everyday people the power to understand legal documents in seconds, without needing a law degree.

What it does

Legalish is an AI-powered legal document analysis platform that simplifies contracts, terms of service, NDAs, and more into plain-English summaries. It highlights red flags, offers voice narration in multiple tones, and includes an intelligent follow-up chatbot. It works both as a responsive web app and a completely free Chrome extension.

How we built it

The frontend is built with React 18, TypeScript, Tailwind CSS, shadcn/ui, and Framer Motion — powered by Vite for fast builds. We used Supabase for authentication, database (PostgreSQL), storage, and serverless Edge Functions. Our AI engine runs on OpenAI GPT-4o-mini combined with a custom RAG system trained on 70,000+ real legal clauses. ElevenLabs handles text-to-speech synthesis, and Stripe powers our subscription model. The Chrome Extension is built on Manifest V3 and supports live page and selection analysis.

Challenges we ran into

Designing a balance between legal depth and simple language was tricky
Getting voice synthesis to sound natural with legal content required fine-tuning
Chrome Extension development with RAG integration took longer due to token limits and context syncing
Ensuring secure analysis and storing user data with full RLS policies in Supabase
Scaling performance while handling streaming AI responses

Accomplishments that we're proud of

A fully working, user-friendly AI legal assistant with both web and browser-based versions
Robust RAG system trained on real legal clauses with document-type-aware summarization
Full voice playback in 8 personality tones using ElevenLabs
Developer-only Chrome Extension that will soon go public
Strong frontend performance and mobile responsiveness

What we learned

Retrieval-augmented generation drastically improves factual accuracy for legal AI
Voice interaction makes legal content more accessible than text alone
Users respond better to tone-personalized summaries than generic outputs
Chrome Extensions can be surprisingly powerful for contextual AI applications

What's next for Legalish

Public release of the Chrome Extension
Launching multilingual support (Spanish, French, Hindi)
Adding more document types like loan agreements, term sheets, medical consent forms
Human-AI legal collaboration: post-analysis video/chat consultations with real lawyers
Legal education mode: gamified simulation tools for students, freelancers, and founders
API licensing, team dashboards, and white-label offerings for law firms and fintech
Expansion to Firefox and mobile platforms