NEEX Legal Contract Review System

The NEEX Legal Contract Review System is an advanced, AI-powered tool designed to de-risk legal contracts by implementing the comprehensive NEEX blueprint methodology. It performs a deep, clause-by-clause analysis, identifies potential risks, and provides actionable negotiation recommendations to protect your interests.

This version has been architected for flexibility, supporting multiple leading AI providers: Google Gemini, OpenAI, and OpenRouter.ai.

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✨ Core Features

This tool goes beyond simple contract summaries, providing a multi-layered analysis for legal professionals and business stakeholders.

• Multi-Provider AI Engine: Seamlessly switch between Google Gemini, OpenAI, and OpenRouter.ai to leverage the best model for your needs.
• Deep Clause-by-Clause Analysis: Each clause is broken down according to the NEEX blueprint's three critical layers:
  • Interpretation: A neutral explanation of what the clause does.
  • Exposure: An analysis of potential risks, liabilities, and vulnerabilities.
  • Opportunity: Identification of negotiation hooks and points of leverage.
• Automated Risk Assessment: Clauses are automatically scored with a risk level (Critical, Material, Procedural) and tagged with relevant risk categories (e.g., Financial, Legal, IPX).
• Actionable Negotiation Support:
  • Negotiation Checklist: A consolidated view of all AI-generated negotiation recommendations.
  • Suggested Redlines: For high-risk clauses, the AI proposes improved, rewritten text to enhance clarity and defensibility.
• Modular Checklist Analysis: The system audits the contract's structure against the NEEX blueprint, generating a report on potentially missing critical clauses (e.g., Indemnification, Limitation of Liability) and the risks of their absence.
• Flexible Document Handling: Analyze contracts by pasting raw text or by uploading files (PDF, DOCX, TXT).
• Interactive & Resilient UI:
  • View analysis results in real-time as they are generated.
  • Stop an analysis at any time without losing the progress already made.
• Exportable Reports: Download the complete analysis report in Markdown for documentation or JSON for data integration.

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🚀 How It Works

The application provides a streamlined workflow for comprehensive contract review:

1. Configure: Set up your API keys in the .env.local file.
2. Upload or Paste: Upload a contract document or paste the text directly into the editor.
3. Select Provider: Choose your preferred AI provider (Gemini, OpenAI, etc.) from the dropdown menu.
4. Analyze: Click "Analyze Contract" to start the process. The system splits the document into clauses and sends each one for deep analysis.
5. Review in Real-Time: Watch as the results populate the dashboard, clause by clause.
6. Explore the Report:
   • Click through the Clause List to see detailed analysis for each section.
   • Switch to the Negotiation Checklist tab for a high-level overview of action items.
   • Check the Missing Clauses Report to identify structural gaps in the contract.
7. Download: Export the full report for offline use.

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🛠️ Run Locally

Prerequisites

• Node.js (v18 or later recommended)
• npm

1. Clone the Repository

git clone https://github.com/your-username/neex-legal-review.git
cd neex-legal-review

2. Install Dependencies

npm install

3. Configure API Keys

Create a new file named .env.local in the root of the project by copying the example file.

cp .env.local.example .env.local

Open .env.local with a text editor and add your API keys for the services you wish to use. The UI will automatically detect which providers are configured.

# .env.local

#Environment variables for NEEX Legal Contract Review System
#--- Instructions ---
#1. FILL IN API KEYS: Provide the API keys for the services you want to use.
#You can fill in one, two, or all three. The application will let you choose which one to use.
#2. (Optional) SET A DEFAULT MODEL: If you want to use a specific model, set the AI_MODEL variable.
#If you leave it blank, the system will use a powerful default model for your chosen provider.
#--- Google Gemini Configuration ---
#Your secret API key for Google Gemini.
#GEMINI_API_KEY=
#GEMINI_ALLOWED_MODELS=

# --- OpenAI Configuration ---
# Your secret API key for OpenAI.
OPENAI_API_KEY=
OPENAI_ALLOWED_MODELS=gpt-5-mini

#--- OpenRouter Configuration ---
#Your secret API key for OpenRouter.ai.
#OPENROUTER_API_KEY=
#AI_MODEL=deepseek/deepseek-chat-v3.1:free

### 4. Run the Application
```bash
npm run dev

The application will be available at http://localhost:5173.

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💻 Technology Stack

• Frontend: React, TypeScript, Vite, Tailwind CSS
• AI Integration: @google/genai, openai
• Document Parsing: pdf.js, mammoth.js

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📁 Project Structure

/
├── public/               # Static assets
├── src/
│   ├── components/       # Reusable React components
│   ├── services/         # AI provider logic (aiService.ts)
│   ├── utils/            # Helper functions (file parsing, report generation)
│   ├── App.tsx           # Main application component
│   └── types.ts          # TypeScript type definitions
├── .env.local.example    # Example environment file
├── vite.config.ts        # Vite build configuration
└── README.md             # You are here!