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Lingmengcan is an end-to-end AI application development platform powered by large language models. It provides comprehensive solutions including knowledge base management, intelligent conversations, workflow orchestration, and AI image generation. Built with modern microservice architecture, supporting fully local deployment to ensure enterprise data security.

• 🤖 Multi-Model Support: Compatible with OpenAI, Ollama, DeepSeek and other LLMs
• 💬 Intelligent Chat: Multi-turn conversations, context memory, streaming output
• 📚 Knowledge Base RAG: Document upload, vectorization, intelligent retrieval enhancement
• 🎨 AI Image Generation: Integrated Stable Diffusion for text-to-image generation
• 🔄 Workflow Engine: Drag-and-drop visual designer with rich node types and real-time debugging
• 🧩 Plugin Marketplace: Extensible plugin system supporting custom node development
• 👥 Permission Management: Complete RBAC permission system
• 🔒 Private Deployment: Fully local operation without external dependencies

Vue 3 + TypeScript + Vite
├── UI Framework: TDesign + Tailwind CSS
├── State Management: Pinia
├── Routing: Vue Router
└── HTTP Client: Axios

NestJS + TypeScript
├── Database: TypeORM + MySQL
├── Authentication: JWT + Passport
├── AI Integration: LangChain + OpenAI API
├── File Storage: Local + Cloud Storage
└── Vector Database: ChromaDB

• User Management: Registration, login, permission control
• Chat System: Multi-turn conversations, history, streaming output
• Knowledge Base: Document parsing, vectorization, similarity search
• Model Management: Multi-model configuration, load balancing, monitoring
• Workflow Engine: Visual designer, node orchestration, real-time debugging
• Plugin Marketplace: Plugin management, dynamic loading, custom extensions
• Drawing System: Stable Diffusion integration, parameter adjustment

git clone https://github.com/lingmengcan/lingmengcan.git
cd lingmengcan

# Create database
mysql -u root -p -e "CREATE DATABASE lingmengcan_ai CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;"

# Import schema
mysql -u root -p lingmengcan_ai < doc/lingmengcan-ai.sql

cd service

# Install dependencies
pnpm install

# Configure environment
cp .env.example .env
# Edit config.development.yaml for database connection

# Start development server
pnpm run start:dev

cd web

# Install dependencies
pnpm install

# Start development server
pnpm dev

Ollama is the simplest local LLM deployment solution, supporting various open-source models.

# macOS/Linux Installation
curl -fsSL https://ollama.ai/install.sh | sh

# Windows: Download from https://ollama.ai/download/windows

# Download and run models
ollama pull llama2          # Meta Llama 2
ollama pull qwen:7b         # Alibaba Qwen
ollama pull codellama       # Code-specialized model

# Start service (default port 11434)
ollama serve

# Test model
ollama run llama2

LM Studio provides a user-friendly graphical interface, suitable for non-technical users.

# 1. Download and install LM Studio
# Official website: https://lmstudio.ai/

# 2. Search and download models in LM Studio:
# - Qwen/Qwen2-7B-Instruct-GGUF
# - microsoft/Phi-3-mini-4k-instruct-gguf
# - TheBloke/Llama-2-7B-Chat-GGUF

# 3. Start local server
# Click "Local Server" tab in LM Studio
# Select model and click "Start Server"
# Default address: http://localhost:1234/v1

# Clone repository
git clone https://github.com/AUTOMATIC1111/stable-diffusion-webui.git
cd stable-diffusion-webui

# Start with API mode
./webui.sh --api --listen --port 7860
# Or Windows: webui-user.bat --api --listen --port 7860

# API address: http://localhost:7860

Add model configuration in backend config file service/config.development.yaml:

# Stable Diffusion Configuration
stablediffusion:
  apiUrl: "http://localhost:7860"
  enabled: true

• 🌐 Frontend: http://localhost:8089
• 🔧 Backend API: http://localhost:3000
• 👤 Default Account: admin / 123456

⚠️ Important Notice: The following screenshots are from early versions. Current version has significant UI and feature updates - screenshots need to be updated urgently!

New Features:

• ✅ Multi-turn conversations with context understanding
• ✅ Knowledge base RAG enhancement
• ✅ Streaming output with typewriter effect
• ✅ Real-time model switching and comparison
• ✅ Conversation history management
• ✅ Export conversation records

New Features:

• ✅ Text-to-Image generation
• ✅ Image style transfer and editing
• ✅ Advanced parameter fine-tuning
• ✅ Batch generation and management
• ✅ ControlNet precise control
• ✅ Image version history management

Complete enterprise-level admin system

👥 User Permission Management	🔐 Role Permission System
• User information management • Permission assignment • Login logs	• RBAC permission model • Fine-grained control • Permission inheritance

📋 Menu Route Management
• Dynamic menu configuration • Route permissions • Menu icons

• 📄 Multi-format document upload (PDF, Word, Markdown)
• 🔍 Intelligent document parsing and chunking
• 🧠 Vectorization storage and retrieval
• 💡 Knowledge base Q&A with citations
• 📊 Usage statistics
• 🔄 Version management and rollback

Visual drag-and-drop workflow designer powered by Vue Flow:

Designer Features:

• 🎨 Drag-and-drop canvas with node connections
• 🔍 Canvas zoom, auto-layout, minimap navigation
• ↩️ Undo/Redo history support
• 💾 Auto-save (30s interval)
• 📤 Import/Export workflows (JSON format)

Rich Node Types:

Real-time Debugging:

• 🐛 Integrated debug panel
• 📊 Stream/non-stream execution modes
• 📝 Execution logs viewer
• 🖼️ Text and image input support

Extensible plugin system for custom workflow nodes:

• 📦 Plugin Categories: AI plugins, Rule plugins, Logic plugins, HTTP plugins, Custom plugins
• 🔌 Dynamic Loading: Auto-load enabled plugins in workflow designer
• ⚙️ JSON Schema Config: Define node configuration forms via JSON Schema
• 📋 Version Control: Plugin versioning and author tracking
• 🎯 Search & Filter: Quick search and category filtering

lingmengcan/
├── 📁 web/                    # Frontend (Vue 3 + TypeScript)
│   ├── src/
│   │   ├── api/              # API layer
│   │   ├── components/       # Reusable components
│   │   ├── views/            # Page views
│   │   ├── store/            # State management (Pinia)
│   │   ├── router/           # Route configuration
│   │   └── utils/            # Utility functions
│   └── package.json
├── 📁 service/               # Backend (NestJS + TypeScript)
│   ├── src/
│   │   ├── controllers/      # Controller layer
│   │   ├── services/         # Business logic layer
│   │   ├── entities/         # Data models
│   │   ├── modules/          # Feature modules
│   │   ├── dtos/             # Data transfer objects
│   │   └── utils/            # Utility classes
│   └── package.json
├── 📁 doc/                   # Documentation
│   ├── lingmengcan-ai.sql    # Database schema
│   └── *.md                  # Documentation files
├── 📁 images/                # Screenshots
└── README.md

# Database configuration
database:
  host: localhost
  port: 3306
  username: root
  password: your_password
  database: lingmengcan_ai

# AI model configuration
llm:
  openai:
    apiKey: your_openai_key
    baseURL: https://api.openai.com/v1
  
  ollama:
    baseURL: http://localhost:11434

# Stable Diffusion configuration
stablediffusion:
  apiUrl: http://localhost:7860

# API base URL
VITE_API_BASE_URL=http://localhost:3000

# Application title
VITE_APP_TITLE=Lingmengcan AI Platform

We welcome all forms of contributions!

1. 🍴 Fork the repository
2. 🌿 Create feature branch (git checkout -b feature/AmazingFeature)
3. 💾 Commit changes (git commit -m 'Add some AmazingFeature')
4. 📤 Push to branch (git push origin feature/AmazingFeature)
5. 🔀 Open Pull Request

• Code Style: ESLint + Prettier
• Commit Convention: Conventional Commits
• Test Coverage: Add tests for new features

This project is licensed under the MIT License

• 💬 QQ Group: 651535270
• 📧 Email: lingmengcan@example.com
• 🐛 Issues: GitHub Issues

Thanks to the following open source projects:

• Vue.js - Progressive JavaScript Framework
• NestJS - Enterprise Node.js Framework
• LangChain - AI Application Development Framework
• Stable Diffusion - AI Image Generation
• TDesign - Vue 3 Component Library