MCP Harbor

MCP Harbor is a Node.js application that provides a Model Context Protocol (MCP) server for interacting with Harbor container registry.

Table of Contents

• MCP Harbor
  • Table of Contents
  • Features
  • Prerequisites
  • Installation
  • Usage
    • Command Line Arguments
    • Environment Variables
    • MCP Client Configuration
  • MCP Tools
  • Development
    • Running in Development Mode
    • Running Tests
  • Project Structure
  • Troubleshooting
    • Common Issues
    • Debug Mode
    • Support
  • License

Features

• MCP Server: Exposes tools for interacting with Harbor through the Model Context Protocol
• Harbor Operations: Supports operations for projects, repositories, tags, and Helm charts
• TypeScript: Written in TypeScript for better type safety and developer experience
• Automated Tests: Comprehensive test suite for reliable functionality

Prerequisites

Before installing MCP Harbor, ensure you have:

• Node.js 18.x or higher
• npm 8.x or higher
• Access to a Harbor registry instance
• Git (for cloning the repository)

Installation

1. Clone the repository:

   git clone https://github.com/nomagicln/mcp-harbor.git
   

2. Navigate to the project directory:

   cd mcp-harbor
   

3. Install dependencies:

   npm install
   

4. Build the project:

   npm run build
   

Usage

Command Line Arguments

The application accepts the following command line arguments:

Options:
  --url       Harbor API URL                              [string] [required]
  --username  Harbor username (or robot account name)     [string] [required]
  --password  Harbor password (mutually exclusive with --token)       [string]
  --token     Harbor token for robot/service accounts                [string]
  --insecure  Disable TLS/SSL certificate validation [boolean] [default: false]
  --debug     Enable debug mode                   [boolean] [default: false]
  --help      Show help                                             [boolean]

Note: You must provide either --password or --token, but not both.

Environment Variables

Instead of command line arguments, you can also use environment variables. Create a .env file in the root directory:

# Harbor API Configuration
HARBOR_URL=https://harbor.example.com
HARBOR_USERNAME=admin

# Authentication: use either PASSWORD or TOKEN (mutually exclusive)
# Option 1: Password-based authentication
HARBOR_PASSWORD=Harbor12345

# Option 2: Token-based authentication (for robot/service accounts)
# HARBOR_USERNAME=robot$myrobot
# HARBOR_TOKEN=your-robot-token-here

# Debug Mode (true/false)
DEBUG=false

# Disable TLS/SSL certificate validation (true/false)
# HARBOR_INSECURE=false

Token Authentication (Robot/Service Accounts)

Harbor supports robot accounts for automated access. To use token-based authentication:

1. Create a robot account in your Harbor instance (Administration > Robot Accounts)
2. Use the robot account name as --username (e.g., robot$myrobot)
3. Use the generated token as --token

mcp-harbor --url https://harbor.example.com --username "robot\$myrobot" --token "your-robot-token"

MCP Client Configuration

Claude Desktop

Add the following to your Claude Desktop configuration file (claude_desktop_config.json):

Using password authentication:

{
  "mcpServers": {
    "harbor": {
      "command": "npx",
      "args": [
        "mcp-harbor",
        "--url", "https://harbor.example.com",
        "--username", "admin",
        "--password", "your-password"
      ]
    }
  }
}

Using token authentication (robot/service account):

{
  "mcpServers": {
    "harbor": {
      "command": "npx",
      "args": [
        "mcp-harbor",
        "--url", "https://harbor.example.com",
        "--username", "robot$myrobot",
        "--token", "your-robot-token"
      ]
    }
  }
}

With self-signed certificates:

{
  "mcpServers": {
    "harbor": {
      "command": "npx",
      "args": [
        "mcp-harbor",
        "--url", "https://harbor.example.com",
        "--username", "admin",
        "--password", "your-password",
        "--insecure"
      ]
    }
  }
}

Cursor / Windsurf

Add the following to your MCP configuration file (.cursor/mcp.json or .windsurf/mcp.json):

{
  "mcpServers": {
    "harbor": {
      "command": "npx",
      "args": [
        "mcp-harbor",
        "--url", "https://harbor.example.com",
        "--username", "admin",
        "--password", "your-password"
      ]
    }
  }
}

Using environment variables

You can also reference environment variables to avoid hardcoding credentials:

{
  "mcpServers": {
    "harbor": {
      "command": "npx",
      "args": ["mcp-harbor"],
      "env": {
        "HARBOR_URL": "https://harbor.example.com",
        "HARBOR_USERNAME": "admin",
        "HARBOR_PASSWORD": "your-password"
      }
    }
  }
}

SSE Transport (remote/shared server)

If you prefer running the MCP server as a standalone process with SSE transport:

npx mcp-harbor --url https://harbor.example.com --username admin --password your-password --sse --port 3000

Then configure your MCP client to connect via SSE at http://localhost:3000/sse.

MCP Tools

The MCP server exposes the following tools:

Tool Name	Description	Parameters
list_projects	List all projects in Harbor	None
get_project	Get project details by ID	projectId: string
create_project	Create a new project	project_name: string, metadata?: object
delete_project	Delete a project	projectId: string
list_repositories	List repositories in a project	projectId: string
delete_repository	Delete a repository	projectId: string, repositoryName: string
list_tags	List tags in a repository	projectId: string, repositoryName: string
delete_tag	Delete a tag	projectId: string, repositoryName: string, tag: string
list_charts	List Helm charts	projectId: string
list_chart_versions	List chart versions	projectId: string, chartName: string
delete_chart	Delete chart version	projectId: string, chartName: string, version: string

Development

Running in Development Mode

npm run dev

Running Tests

# Run all tests
npm test

# Run tests with coverage
npm run test:coverage

Project Structure

mcp-harbor
├── src
│   ├── app.ts                 # Main application entry point (MCP server)
│   ├── definitions
│   │   └── tool.definitions.ts # Tool definitions for MCP
│   ├── services
│   │   └── harbor.service.ts  # Harbor service implementation
│   └── types
│       └── index.ts           # TypeScript type definitions
├── test
│   └── harbor.test.ts         # Tests for Harbor service
├── .env.example              # Example environment variables
├── .gitignore               # Git ignore file
├── .eslintrc.json           # ESLint configuration
├── package.json            # Project dependencies
├── jest.config.js           # Jest configuration
├── tsconfig.test.json      # TypeScript configuration for tests
├── tsconfig.json          # TypeScript configuration
├── LICENSE                # Project license
└── README.md             # Project documentation

Troubleshooting

Common Issues

1. Connection Failed

   Error: Unable to connect to Harbor instance
   

   • Verify HARBOR_URL is correct and accessible
   • Check network connectivity
   • Ensure Harbor instance is running

2. Authentication Failed

   Error: Invalid credentials
   

   • Verify HARBOR_USERNAME and HARBOR_PASSWORD are correct
   • Check if user has required permissions

3. Build Errors

   Error: TypeScript compilation failed
   

   • Run npm install to ensure all dependencies are installed
   • Check TypeScript version compatibility
   • Clear the dist directory and rebuild

Debug Mode

Enable debug mode by using the --debug flag or setting:

DEBUG=true

Support

For additional help:

1. Review the application logs

License

This project is licensed under the MIT License - see the LICENSE file for details.