⚖️ AI Legal Agent

🇻🇳 Tiếng Việt | 🇺🇸 English

Created by Lê Minh Hiếu — Trader turned Builder 🇻🇳

AI-powered legal assistant for Vietnamese businesses

An AI platform for legal research, contract review, and legal document drafting — all in a VSCode-style interface.

📸 Screenshots

Landing Page — Hero, features, pricing

Dashboard — VSCode-style 3-panel layout

AI Contract Review — Risk analysis, highlights, recommendations

Contract Upload — Drag & drop, AI auto-analysis

✨ Features

🤖 AI Agent (24 Tools)

• Legal search — Search across 40,000+ Vietnamese legal documents
• Contract review — Risk analysis, missing clauses, amendment suggestions
• Compliance check — Verify labor/commercial/service contracts against Vietnamese law
• Clause drafting — Generate confidentiality, penalty, termination, force majeure clauses...
• Contract summary — Quick summary of parties, value, duration
• Contract comparison — Side-by-side diff of 2 contracts
• Company memory — Remembers company context across chat sessions
• 📂 Full document control — Read, write, edit, delete, organize documents autonomously

🦾 Agentic AI — Full Document Control

The AI is now "Cursor for lawyers" — full autonomous document manipulation capabilities.

Legal AI can autonomously manage your documents and contracts:

What it can do:

• 📂 Browse and search — List all documents, search by folder/keyword/type
• 📖 Read any document — View full content, extract specific sections
• ✏️ Edit specific clauses — Find & replace text, track all changes
• 📝 Generate new documents — Draft contracts, memos, reports from scratch using AI
• 🔍 Compare documents — Side-by-side diff with similarity score
• 📋 Review contracts for risks — Batch review multiple files at once
• 🗂️ Organize with folders — Create folders, move files, tag documents
• 📊 Batch operations — Review 10+ contracts simultaneously
• 📜 Track edit history — Full audit trail of who changed what and when
• 🗑️ Soft delete — Delete documents with 30-day recovery window

Example Commands:

"Liệt kê tất cả hợp đồng"
"Đọc hợp đồng thuê mặt bằng số 123"
"Sửa điều khoản phạt trong HĐ này cho đúng luật"
"Soạn NDA giữa công ty A và B, thời hạn 2 năm"
"So sánh bản cũ và bản mới của HĐ lao động"
"Review tất cả 5 hợp đồng trong thư mục Dự án X"
"Tạo thư mục 'Khách hàng ABC' và di chuyển 3 hợp đồng vào đó"
"Xem lịch sử chỉnh sửa của tài liệu này"

Multi-Step Autonomous Workflows:

The AI can chain multiple tools together to complete complex tasks:

User: "Sửa điều khoản phạt trong HĐ ABC cho đúng luật"
AI: 
  1. read_document → Gets current content
  2. search_law → Finds relevant penalty law (8% max per Commercial Law)
  3. edit_document → Replaces old penalty clause with compliant version
  4. document_history → Shows what changed

User: "Soạn NDA giữa công ty A và B, lưu vào thư mục Khách hàng A"
AI:
  1. generate_document → Creates NDA from requirements
  2. create_folder → Creates "Khách hàng A" folder (if doesn't exist)
  3. write_document → Saves NDA to folder

New Agentic Tools (11):

1. list_documents — List all documents/contracts with search & filter
2. read_document — Read full content or specific sections
3. write_document — Create new documents with metadata & tags
4. edit_document — Find & replace text, track changes
5. compare_documents — Diff two documents (summary/detailed/clause-by-clause)
6. create_folder — Create organizational folders for cases/projects
7. move_document — Move documents between folders
8. delete_document — Soft delete (recoverable for 30 days)
9. generate_document — AI drafts legal documents from requirements
10. batch_review — Review multiple documents for risks simultaneously
11. document_history — View full edit history and audit trail

📋 Contract Review AI

Upload contracts for instant AI-powered review:

• ⚠️ Risk identification and scoring — 10 risk categories analyzed
• ⚖️ Vietnamese law compliance check — Civil Code, Commercial Law, Labor Law
• 💡 Revision suggestions — Specific amendments with legal references
• 📊 Clause-by-clause analysis — Risk levels: LOW / MEDIUM / HIGH / CRITICAL
• 📄 8+ contract templates — Ready-to-use Vietnamese templates

Risk Categories Analyzed

1. Điều khoản bất lợi — One-sided clauses favoring one party
2. Phạt vi phạm cao — Excessive penalty clauses (>8% per Vietnamese law)
3. Thời hạn bất hợp lý — Unreasonable deadlines/terms
4. Thiếu điều khoản bảo vệ — Missing protective clauses
5. Mâu thuẫn với luật — Clauses contradicting Vietnamese law
6. Điều khoản tự động gia hạn — Auto-renewal traps
7. Giới hạn trách nhiệm — Liability limitations
8. Bảo mật và SHTT — IP/confidentiality issues
9. Giải quyết tranh chấp — Dispute resolution (arbitration vs court)
10. Force majeure — Missing or weak force majeure

Supported Contract Types

• Employment (Hợp đồng lao động)
• Lease (Hợp đồng thuê mặt bằng)
• Sale (Hợp đồng mua bán)
• Service (Hợp đồng dịch vụ)
• NDA / Confidentiality (Bảo mật thông tin)
• Loan (Hợp đồng vay)
• Agency (Hợp đồng đại lý)
• Business Cooperation (Hợp đồng hợp tác kinh doanh)

API Usage

Review a contract:

POST /v1/contracts/{contract_id}/review-ai

Get review results:

GET /v1/contracts/{contract_id}/review-ai

Response structure:

{
  "review_id": "review_20250319_143000",
  "contract_title": "Hợp đồng thuê mặt bằng",
  "contract_type": "lease",
  "parties": ["Công ty A", "Công ty B"],
  "risk_score": 72,
  "risk_level": "HIGH",
  "summary": "Hợp đồng có 5 điều khoản rủi ro cao...",
  "clauses": [
    {
      "clause_number": "Điều 5",
      "title": "Phạt vi phạm",
      "content": "Bên B phải trả phạt 20%...",
      "risk_level": "CRITICAL",
      "risk_score": 95,
      "issue": "Mức phạt 20% vượt quá quy định",
      "law_reference": "Điều 301 Luật TM 2005: phạt ≤ 8%",
      "suggestion": "Giảm mức phạt xuống ≤ 8%"
    }
  ],
  "missing_clauses": [
    {
      "clause": "Force Majeure",
      "importance": "HIGH",
      "suggestion": "Thêm Điều 156 BLDS 2015"
    }
  ],
  "compliance": {
    "civil_code": {"status": "PARTIAL", "issues": 2},
    "commercial_law": {"status": "VIOLATION", "issues": 1},
    "labor_law": {"status": "N/A"}
  },
  "recommendations": [
    {
      "priority": 1,
      "action": "Sửa Điều 5: giảm phạt 20% → 8%",
      "reason": "Vi phạm Điều 301 Luật TM 2005"
    }
  ]
}

📊 Dashboard & Analytics

• Risk Dashboard — Overview of risks across all contracts
• Contract Calendar — Monthly contract schedule
• Usage Analytics — Usage stats, top queries
• Audit Log — Activity journal

🎯 Enterprise Features

• Batch upload (10 files at a time)
• Report export (.docx)
• Contract versioning & notes
• Smart suggestions (AI-powered contract improvements)
• Bulk analysis (analyze 20 contracts simultaneously)
• Universal search (contracts + docs + laws + chats)
• Template auto-fill
• Onboarding wizard

🏗️ Platform Administration

Self-hosted deployments include a full Platform Super Admin panel for system administration:

Access

Navigate to /platform-admin (requires superadmin role)

Features

• 📊 Dashboard — Real-time platform statistics, usage trends, top companies
• 🏢 Multi-tenant Management — Manage all companies, change plans, set quotas, activate/deactivate
• 👥 User Management — View all users across tenants, change roles, manage permissions
• ⚙️ System Settings — Configure LLM provider, file limits, registration settings, feature flags
• 💰 LLM Usage & Cost Tracking — Token usage by provider/company, estimated monthly costs
• 📋 Audit Logs — Full platform-level action logging with user attribution
• 🔧 Maintenance Tools — DB statistics, cleanup scripts, reindex operations

The Platform Admin panel provides complete control over your self-hosted Legal AI deployment:

# Navigate to platform admin
https://your-domain.com/platform-admin

# Available stats:
- Total companies, users, documents, contracts
- Vietnamese law database size (60K+ documents, 117K+ chunks)
- Daily/monthly query volumes
- Active users, storage usage
- Usage trends (30-day charts)
- Revenue estimates by plan

# Management capabilities:
- Create/edit/deactivate companies
- Change subscription plans (trial → starter → pro → enterprise)
- Adjust quota limits per company
- Reset user passwords, change roles
- View company-specific usage history
- Configure system-wide settings
- Track LLM costs per company
- Full audit trail of admin actions

📱 Modern UI

• VSCode-style 3-panel layout
• Dark/Light theme
• Mobile responsive (bottom tab bar)
• PWA installable
• SSE streaming chat
• Command palette (Ctrl+K)
• Keyboard shortcuts

🕷️ Data Crawler (Powered by CrawlKit)

Legal AI Agent can automatically crawl Vietnamese legal websites to build and update your document database.

Supported Sources

• 📚 Thư Viện Pháp Luật (thuvienphapluat.vn) — Largest Vietnamese legal document database
• 🏛️ Văn Bản Pháp Luật Chính Phủ (vbpl.vn) — Official government legal portal
• 📰 Công Báo (congbao.chinhphu.vn) — Official Gazette of Vietnam
• 🌐 Any legal website URL — Custom legal document sources

Setup

1. Get your free API key at crawlkit.org
2. Add to .env:

   CRAWLKIT_API_KEY=your_api_key_here
   

3. Start crawling!

Usage

Via API:

POST /crawler/crawl
{
  "url": "https://thuvienphapluat.vn/van-ban/..."
}

Via AI Chat:

"Crawl văn bản tại https://thuvienphapluat.vn/van-ban/123"

Other endpoints:

• GET /crawler/sources — List supported legal sources
• POST /crawler/discover — Discover legal document links from a page
• POST /crawler/batch — Batch crawl multiple URLs
• GET /crawler/status — Check CrawlKit configuration

Pricing

• Free: 100 requests/day (perfect for getting started)
• Starter: $19/mo — 10,000 requests
• Pro: $79/mo — 100,000 requests

Get your free CrawlKit API key →

🚀 Quick Start

Prerequisites

• Python 3.10+
• PostgreSQL (or Supabase)
• Claude API key (console.anthropic.com)

1. Clone & Install

git clone https://github.com/Paparusi/legal-ai-agent.git
cd legal-ai-agent
pip install -r requirements.txt

2. Configure

cp .env.example .env
# Edit .env with your credentials

3. Database Setup

# Run migrations
python scripts/run_migration.py

# Load Vietnamese law data (optional, ~40K documents)
python scripts/load_law_data.py
python scripts/index_chunks.py

4. Run

uvicorn src.api.main:app --host 0.0.0.0 --port 8080

Open http://localhost:8080/static/app.html

🐳 Docker (Recommended)

# 1. Clone
git clone https://github.com/Paparusi/legal-ai-agent.git
cd legal-ai-agent

# 2. Configure
cp .env.example .env
nano .env  # Add your ANTHROPIC_API_KEY

# 3. Start (PostgreSQL + App)
docker compose up -d

# 4. Open
# http://localhost:8080/static/app.html

This starts PostgreSQL 15 (with pgvector) and the FastAPI app automatically.

⚠️ Note: The database schema is created automatically on first startup, but law documents are empty by default. To populate the legal database:

# Option 1: Crawl Vietnamese legal websites (recommended)
docker compose exec app python scripts/crawl_thuvien.py

# Option 2: Load from backup (if you have one)
docker compose exec app python scripts/load_law_data.py

Without legal data, the AI can still review/draft contracts, but legal search won't work.

🖥️ Self-hosted (NAS / Xpenology / Synology)

Works on any Docker-capable device — NAS, Raspberry Pi, VPS, or local server.

# SSH into your NAS/server
git clone https://github.com/Paparusi/legal-ai-agent.git
cd legal-ai-agent
cp .env.example .env

# Edit .env — only ANTHROPIC_API_KEY is required
nano .env

# Start
docker compose up -d

# Access from any device on your network:
# http://NAS_IP:8080/static/app.html

System requirements:

• Docker + Docker Compose
• 512MB RAM minimum (1GB recommended)
• 1GB disk space
• Any CPU (x86_64 or ARM64)

Ports: 8080 (web UI), 5432 (PostgreSQL, optional external access)

Persistent data: PostgreSQL data is stored in a Docker volume (pgdata). Your data survives container restarts and updates.

Update to latest version:

git pull
docker compose build
docker compose up -d

📁 Project Structure

├── src/
│   ├── api/
│   │   ├── main.py              # FastAPI app + all routes
│   │   ├── routes/              # Route modules
│   │   │   ├── auth.py          # Login, register, API keys
│   │   │   ├── contracts.py     # Contract CRUD
│   │   │   ├── documents.py     # Document upload
│   │   │   ├── chats.py         # Chat history
│   │   │   ├── company.py       # Company management
│   │   │   └── admin.py         # Admin dashboard
│   │   └── middleware/
│   │       ├── auth.py          # API key verification
│   │       └── logging.py       # Usage logging
│   └── agents/
│       ├── legal_agent.py       # AI agent with 11 tools
│       └── company_memory.py    # Company context memory
├── static/
│   ├── app.html                 # Main SPA (~5600 lines)
│   ├── index.html               # Landing page
│   ├── admin.html               # Admin dashboard
│   └── manifest.json            # PWA manifest
├── scripts/
│   ├── load_law_data.py         # Import law documents
│   ├── index_chunks.py          # Chunk & index for search
│   └── run_migration.py         # DB migrations
├── docker-compose.yml           # One-command deploy
├── Dockerfile                   # Container build
├── .env.example                 # Environment template
├── requirements.txt
└── Procfile                     # Railway/Heroku deploy

🔧 API Endpoints

Auth

AI Chat

Contracts

Search

Analytics

🤖 Multi-LLM Provider Support

Bring Your Own LLM — Connect your preferred AI provider with API Key or OAuth:

Supported Providers

Configuration

1. Via Dashboard: Settings → AI Provider → Choose provider → Enter API key
2. Via API: POST /v1/llm/configure with your API key
3. OAuth (OpenAI/Gemini): Click "Connect with [Provider]" → Authorize → Done

API Endpoints

Features

• ✅ Unified Interface: Agent works with any LLM — no code changes
• 🔒 Encrypted Storage: API keys encrypted with Fernet (AES-256)
• 🔄 OAuth Support: Automated token management for OpenAI & Google
• 🛠️ Tool Normalization: Function calling formats normalized across providers
• 💾 Company-Level Config: Each company can use different LLM
• 🔁 Fallback: Defaults to ANTHROPIC_API_KEY env var if not configured

Environment Variables

# Encryption key for API keys (generate with: python -c "from cryptography.fernet import Fernet; print(Fernet.generate_key().decode())")
LLM_ENCRYPTION_KEY=your-32-byte-key

# OAuth credentials (optional, for OAuth flow)
OPENAI_CLIENT_ID=your-openai-client-id
OPENAI_CLIENT_SECRET=your-openai-client-secret
GEMINI_CLIENT_ID=your-google-client-id
GEMINI_CLIENT_SECRET=your-google-client-secret
OAUTH_REDIRECT_URI=http://localhost:8080/v1/llm/oauth/callback

# Default fallback (if no provider configured)
ANTHROPIC_API_KEY=your-anthropic-key

💰 Pricing

Discounts: Annual -20% · Startups -30% · NGOs -50%

GET /v1/pricing  # Get pricing tiers

📄 Contract Templates

8 ready-to-use Vietnamese contract templates:

All templates include {{fillable_fields}}, legal notes, and specific law article references.

GET /v1/templates              # List all templates
GET /v1/templates/{id}         # Get template content
POST /v1/templates/generate    # AI-fill template

🌐 Multi-Language (i18n)

Support Vietnamese and English:

# Vietnamese (default)
curl -H "Accept-Language: vi" /v1/pricing

# English
curl -H "Accept-Language: en" /v1/pricing

🛠️ Tech Stack

• Backend: FastAPI + Python
• AI: Multi-LLM (Claude, GPT, Gemini, Custom) via unified provider interface
• Database: PostgreSQL (Supabase) with pgvector
• Search: Full-text search + synonym expansion + TF-IDF ranking
• Frontend: Vanilla JS SPA (single HTML file)
• Deploy: Railway / Docker / any container host

📝 Vietnamese Law Database

The search engine indexes Vietnamese legal documents including:

• Labor Code 2019 (Bộ luật Lao động)
• Civil Code 2015 (Bộ luật Dân sự)
• Enterprise Law 2020 (Luật Doanh nghiệp)
• Commercial Law 2005 (Luật Thương mại)
• Corporate Income Tax, Personal Income Tax, VAT Laws
• And 40,000+ more...

🤝 Contributing

See CONTRIBUTING.md for guidelines. Areas that need help:

• More Vietnamese legal document sources
• Better NLP for Vietnamese text
• Test coverage
• Multi-language support

📄 License

MIT — free to use, including commercially.

⚠️ Disclaimer

This is an assistive tool and does not replace professional legal advice. Always consult a qualified lawyer for important legal decisions.

💖 Sponsors

Love this project? Become a sponsor! 🙏

Your support helps maintain and expand this open-source Vietnamese legal AI platform. By sponsoring, you're supporting:

• 🇻🇳 Vietnamese open-source development
• ⚖️ Democratized legal tech for small businesses
• 📚 Free legal AI tools for everyone
• 🚀 New features and improvements

💰 Sponsor Tiers

👉 View all tiers & sponsor now

For Enterprise inquiries: GitHub Issues or @gau_trader on Telegram

🌟 Current Sponsors

No sponsors yet — be the first! Your logo could be here. 🚀

See .github/SPONSORS.md for full details.

Made with ❤️ by Lê Minh Hiếu 🇻🇳