feat: add mcp-servers/**

mcp-servers/mongodb/README.md

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+# MongoDB MCP Server
+
+MongoDB MCP Server provides MongoDB database interaction capabilities through the Model Context Protocol, including data querying, insertion, updating, and collection management.
+
+## Features
+
+- 📊 **Database Operations** - CRUD operations support
+- 🔍 **Query & Aggregation** - Complex queries and aggregation pipelines
+- 📝 **Collection Management** - Create, delete, and modify collections
+- 🔐 **Authentication** - Built-in authentication support
+- <20> **Monitoring** - Health checks and resource monitoring
+- 🌐 **RESTful API** - MCP protocol-based API interface
+
+## Architecture
+
+The service includes two containers:
+
+- **mcp-mongodb**: MCP protocol adapter providing API interface
+- **mongodb**: MongoDB database instance
+
+## Environment Variables
+
+| Variable                    | Default                   | Description                             |
+| --------------------------- | ------------------------- | --------------------------------------- |
+| `MCP_MONGODB_VERSION`       | `latest`                  | MCP MongoDB service version             |
+| `MONGODB_VERSION`           | `7`                       | MongoDB version                         |
+| `MCP_MONGODB_PORT_OVERRIDE` | `8000`                    | MCP service port                        |
+| `MONGODB_PORT_OVERRIDE`     | `27017`                   | MongoDB port                            |
+| `MONGODB_URI`               | `mongodb://mongodb:27017` | MongoDB connection URI                  |
+| `MONGODB_DATABASE`          | `mcp_db`                  | Database name                           |
+| `MONGO_ROOT_USERNAME`       | `admin`                   | Root username                           |
+| `MONGO_ROOT_PASSWORD`       | `password`                | Root password (⚠️ change in production!) |
+| `TZ`                        | `UTC`                     | Timezone                                |
+
+## Quick Start
+
+### 1. Configure Environment
+
+Create a `.env` file:
+
+```env
+MCP_MONGODB_VERSION=latest
+MONGODB_VERSION=7
+MCP_MONGODB_PORT_OVERRIDE=8000
+MONGODB_PORT_OVERRIDE=27017
+MONGODB_DATABASE=mcp_db
+MONGO_ROOT_USERNAME=admin
+MONGO_ROOT_PASSWORD=your_secure_password
+TZ=Asia/Shanghai
+```
+
+### 2. Start Services
+
+```bash
+docker compose up -d
+```
+
+### 3. Verify Services
+
+Check MCP service:
+
+```bash
+curl http://localhost:8000/health
+```
+
+Connect to MongoDB:
+
+```bash
+docker compose exec mongodb mongosh -u admin -p your_secure_password
+```
+
+## Resource Requirements
+
+- **MCP Service**: 128MB-512MB memory, 0.25-1.0 CPU
+- **MongoDB**: 512MB-2GB memory, 0.5-2.0 CPU
+
+## Security Recommendations
+
+1. **Change Default Password**: Always change `MONGO_ROOT_PASSWORD` in production
+2. **Network Isolation**: Use internal networks, avoid exposing MongoDB port publicly
+3. **Enable Authentication**: Ensure MongoDB authentication is enabled
+4. **Regular Backups**: Set up regular data backup schedules
+
+## Data Persistence
+
+- `mongodb_data`: MongoDB data directory
+- `mongodb_config`: MongoDB configuration directory
+
+## Common Use Cases
+
+1. **Application Backend** - As database backend for applications
+2. **Data Analysis** - Store and query analysis data
+3. **Document Storage** - Store and retrieve JSON documents
+4. **Session Management** - Store user sessions
+
+## References
+
+- [MongoDB Official Documentation](https://docs.mongodb.com/)
+- [MCP Documentation](https://modelcontextprotocol.io/)
+- [Docker Hub - mongo](https://hub.docker.com/_/mongo)
+
+## License
+
+MIT License