Upload any contract → AI flags illegal clauses, writes counter-clauses, gives a Sign/Don't Sign verdict, and trains you to negotiate. Free legal protection for everyone.
🚀 Live Demo · 📹 Demo Video · 🐛 Report Bug
Every year, millions of Indians sign rental agreements, employment contracts, NDAs, and loan documents they don't understand. Legal review costs ₹2,000–₹10,000 per document — 92% of people can't afford it. They sign anyway.
A clause that violates the Indian Contract Act. A non-compete that is legally unenforceable. A deposit clause designed to never be returned. Signed. Every day. By people who just didn't know.
LexAI fixes that.
Flags clauses that violate actual Indian law — not just "risky," but legally unenforceable — with specific Act name and section number.
Covers: Indian Contract Act §23/§27 · IT Act §43/§72 · Rent Control Acts · Industrial Disputes Act · Consumer Protection Act 2019
A clear decision — not a score:
- ✅
SAFE TO SIGN— no critical issues ⚠️ DO NOT SIGN YET— fix these 3 clauses first- 🚫
DO NOT SIGN— serious illegal content
For every risky clause, LexAI writes ready-to-send alternative wording the user can demand from the other party.
AI plays the landlord, employer, or client. You practice your pushback. After 3 rounds, AI gives a negotiation debrief and outcome score.
Upload old + new contract. AI diffs every clause — what changed, what disappeared, and whether each change hurts or helps you.
Visual timeline of when each clause activates over the contract period. The auto-renewal that fires in month 10. The rent hike trigger in month 6.
Compares your clauses against 200+ real Indian contracts. "Your 90-day notice period is above market for 73% of similar IT roles."
Rights violated after signing? LexAI generates a proper Indian legal notice — correct citations, 15-day deadline, court-ready language.
Full Hindi explanations + Text-to-Speech on every clause. Works on ₹8,000 Android phones.
| Verdict Banner | Clause Analysis | Danger Timeline |
|---|---|---|
 |
 |
 |
| Negotiation Roleplay | Contract Compare | Dispute Letter |
|---|---|---|
 |
 |
 |
| Layer | Technology | Purpose |
|---|---|---|
| Frontend | Next.js 14 (App Router) | UI + API routes in one project |
| Styling | Tailwind CSS | Fast, responsive design |
| Primary LLM | Groq LLaMA 3.1 70B | Sub-1s clause analysis + negotiation |
| Vision / OCR | Google Gemini 1.5 Flash | PDF → text extraction |
| Database | MongoDB Atlas | Documents, clauses, benchmark data |
| Deployment | Vercel | Auto-deploy from GitHub |
| Voice | Web Speech API | Browser-native TTS + mic input |
User Browser (Next.js 14 PWA)
│
├── /analyze → Upload + full analysis workspace
├── /compare → Contract version diff
├── /roleplay → Negotiation simulator
├── /dispute → Legal notice generator
└── /history → Past analyzed documents
│
▼
Next.js API Routes
│
├── /api/parse-document → Gemini: PDF → raw text
├── /api/analyze-clauses → Groq: master analysis JSON
├── /api/counter-clause → Groq: alternative clause wording
├── /api/compare-contracts → Groq: old vs new diff
├── /api/negotiation-chat → Groq: SSE streaming roleplay
├── /api/benchmark-clause → MongoDB + Groq comparison
├── /api/dispute-letter → Groq: legal notice draft
└── /api/documents → MongoDB CRUD
│
├── Groq LLaMA 3.1 70B (analysis, negotiation, letters)
├── Gemini 1.5 Flash (PDF parsing)
└── MongoDB Atlas (storage + 200 benchmark clauses)
- Node.js >= 18.0.0
- npm >= 9.0.0
- MongoDB Atlas account (free)
- Groq API key (free)
- Google Gemini API key (free)
# 1. Clone the repo
git clone https://github.com/yourusername/lexai.git
cd lexai
# 2. Install dependencies
npm install
# 3. Set up environment variables
cp .env.example .env.local
# Fill in your API keys (see below)
# 4. Seed benchmark database
node scripts/seed-benchmarks.js
# 5. Run development server
npm run devCreate a .env.local file in the root directory:
# MongoDB Atlas
# Get from: cloud.mongodb.com → Connect → Drivers
MONGODB_URI=mongodb+srv://USERNAME:PASSWORD@cluster0.xxxxx.mongodb.net/lexai
# Groq (Free: 14,400 req/day)
# Get from: console.groq.com/keys
GROQ_API_KEY=gsk_xxxxxxxxxxxxxxxxxxxxxxxxxxxx
# Google Gemini (Free: 1,500 req/day)
# Get from: aistudio.google.com/app/apikey
GEMINI_API_KEY=AIzaSyXXXXXXXXXXXXXXXXXXXXXX
# App
NEXT_PUBLIC_APP_URL=http://localhost:3000
NEXTAUTH_SECRET=your_64_char_random_secret| Service | URL | Free Limit |
|---|---|---|
| Groq | console.groq.com/keys | 14,400 req/day · 30 RPM |
| Gemini | aistudio.google.com/app/apikey | 1,500 req/day · 15 RPM |
| MongoDB | cloud.mongodb.com | 512MB free M0 cluster |
lexai/
├── app/
│ ├── layout.jsx # Root layout
│ ├── page.jsx # Landing page
│ ├── analyze/page.jsx # ★ Main analysis workspace
│ ├── compare/page.jsx # Contract version diff
│ ├── roleplay/page.jsx # Negotiation simulator
│ ├── dispute/page.jsx # Dispute letter generator
│ ├── history/page.jsx # Past documents
│ └── api/ # All API routes
│
├── components/
│ ├── VerdictBanner.jsx # Sign / Don't Sign banner
│ ├── ClauseCard.jsx # Expandable clause card
│ ├── DangerTimeline.jsx # Visual clause timeline
│ ├── NegotiationChat.jsx # Roleplay chat UI
│ ├── DiffViewer.jsx # Contract compare view
│ └── ... # Other components
│
├── lib/
│ ├── mongodb.js # DB connection
│ ├── groq.js # Groq client
│ ├── gemini.js # Gemini client
│ └── prompts.js # All LLM prompts
│
├── models/ # Mongoose schemas
├── scripts/
│ └── seed-benchmarks.js # Seeds 200 Indian contract clauses
│
├── .env.example # Environment template
└── package.json
{
"next": "14.2.0",
"groq-sdk": "^0.7.0",
"@google/generative-ai": "^0.17.0",
"mongoose": "^8.4.0",
"recharts": "^2.12.0",
"lucide-react": "^0.400.0",
"tailwindcss": "^3.4.0"
}# Install Vercel CLI
npm i -g vercel
# Deploy
vercel
# After deploy, add env vars in:
# Vercel Dashboard → Project → Settings → Environment VariablesAdd all variables from .env.local in the Vercel dashboard, then redeploy.
- PDF upload + Gemini text extraction
- Illegal clause detection with Indian law citations
- Sign / Don't Sign verdict
- Counter-clause generator
- Negotiation roleplay simulator
- Contract version comparator
- Clause danger timeline
- Benchmark engine (200 seeded clauses)
- Dispute letter generator
- Hindi + voice support
- Regional languages (Marathi, Telugu, Tamil)
- WhatsApp bot integration
- Lawyer connect (30-min paid consultation)
- B2B API for real-estate platforms
- Community red flags (crowdsourced clause warnings)
LexAI provides legal information, not legal advice. It is not a substitute for professional legal counsel. Always consult a qualified lawyer for important legal decisions. Illegal clause detection is based on publicly available Indian law and should be independently verified for your specific situation.
Built with ❤️ at TerraCode Convergence 2026
| Name | Role |
|---|---|
| Yashodip More | Full Stack + AI |
| Teammate | Frontend + Design |
MIT License — see LICENSE for details.
LexAI · TerraCode Convergence 2026
"Harvey AI serves law firms. LexAI serves you."