Jenkins MCP Tool

🚀 Introduction

Jenkins MCP is an multi-Jenkins server management and automation tool developed based on the FastMCP framework, designed for DevOps processes. It supports intelligent scenario mapping, multi-server management, complete CI/CD lifecycle operations, and dynamic job creation.

Related MCP server: Jenkins Server MCP

✨ Core Features

🏢 Multi-Server Management

• Dynamic Configuration: Supports configuration and dynamic addition/removal of multiple Jenkins servers

• Environment Isolation: Supports management of multiple environments such as development, testing, and production

• Secure Authentication: Supports token and environment variable-based authentication

🎯 Intelligent Scenario Mapping

• Pre-configured Scenarios: Built-in common DevOps scenarios (user permission sync, app deployment, image sync)

• Smart Recommendation: Automatically selects server and job path based on scenario

• Personalized Guidance: Each scenario provides customized operation guidance

⚙️ Full CI/CD Support

• Job Search: Supports fuzzy and exact search across multi-level directories

• Parameterized Build: Automatically detects and validates required parameters

• Real-time Monitoring: Build status query and log retrieval

• Build Control: Supports build trigger, stop, and management

• Job Creation: Create/update Jenkins jobs from Jenkinsfile with automatic directory management

🔧 Developer Friendly

• MCP Standard: Complies with Model Context Protocol specification

• Dockerized: Containerized deployment for easy integration

• Multiple Operation Modes: Supports stdio, SSE, and HTTP transport modes

⚙️ Configuration Guide

📁 Config File Structure

Create a config.yaml file to configure Jenkins servers and application scenarios:

# Jenkins server configuration
servers:
  - name: maglev-sre           # Server alias
    uri: https://jenkins.server
    user: xhuaustc@gmail.com
    tokenEnv: JENKINS_TOKEN  # Recommended: get token from environment variable

# Pre-configured application scenarios
scenarios:
  "Sync User Permissions":
    description: "User permission sync scenario"
    server: "shlab"
    job_path: "maglev/tool/permission-replicate/"
    prompt_template: "Execute user permission sync task. Job path: {job_path}. Please confirm which users' permissions to sync?"

  "Deploy Application":
    description: "Application deployment scenario, supports diff/sync/build operations"
    server: "maglev-sre"
    job_path: "release/deploy/"
    prompt_template: "Execute application deployment task. Job path: {job_path}. Please confirm the app name, version, and environment to deploy?"

  "Sync Image to mldc":
    description: "Sync container image to mldc environment"
    server: "shlab"
    job_path: "mldc-prod/sync-container-image-to-docker-af"
    prompt_template: "Execute image sync task. Please provide the image address to sync?"

🔐 Security Configuration

Recommended: Use environment variables to manage sensitive information

export PROD_BLSM_JENKINS_TOKEN="your-production-token"
export SHLAB_JENKINS_TOKEN="your-shlab-token"

Configuration Priority:

1. Environment variable (variable name specified by tokenEnv)

2. Direct configuration (token field)

3. Interactive input (if neither is configured)

🚀 Quick Start

🐳 Docker Method (Recommended)

1. Build Image

cd mcps/jenkins
docker build -t jenkins-mcp .

2. Prepare Configuration

Create a config.yaml file (refer to the configuration guide above)

3. Run Container

# Use config file from current directory
docker run -i --rm \
  -v ./config.yaml:/app/config.yaml \
  -e PROD_BLSM_JENKINS_TOKEN="${PROD_BLSM_JENKINS_TOKEN}" \
  -e SHLAB_JENKINS_TOKEN="${SHLAB_JENKINS_TOKEN}" \
  jenkins-mcp

# Or specify custom config path
docker run -i --rm \
  -v /path/to/your/config.yaml:/app/config.yaml \
  -e JENKINS_TOKEN="${JENKINS_TOKEN}" \
  jenkins-mcp

🎨 MCP Client Integration

Cursor Integration

1. Set Environment Variables:

   export JENKINS_TOKEN="your-jenkins-token"

2. Create Config File: Create jenkins-config.yaml in the project root:

   servers:
     - name: your-jenkins
       uri: https://your-jenkins.company.com
       user: your-username
       tokenEnv: JENKINS_TOKEN
   scenarios:
     "Deploy Application":
       description: "Application deployment scenario"
       server: "your-jenkins"
       job_path: "deploy/"

3. Configure Cursor MCP Settings: Add to Cursor's MCP config:

   {
     "mcpServers": {
       "jenkins": {
         "command": "docker",
         "args": [
           "run", "--rm", "-i",
           "-v", "/path/to/your/jenkins-config.yaml:/app/config.yaml",
           "-e", "JENKINS_TOKEN=${JENKINS_TOKEN}",
           "docker.io/mpan083/jenkins-mcp"
         ],
         "env": {
           "JENKINS_TOKEN": "your-jenkins-token"
         }
       }
     }
   }

4. Usage Example: In Cursor, ask:

   "Get the list of available Jenkins scenarios"
   "Trigger a build for Deploy Application"
   "Check the status of the latest build"
   "Create a new test job from Jenkinsfile"

Method 2: Local Installation

1. Install Dependencies:

   cd mcps/jenkins
   pip install -e .

2. Configure Cursor MCP Settings:

   {
     "mcpServers": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "-v",
        "~/.jenkinscliconfig:/app/config.yaml",
        "docker.io/mpan083/jenkins-mcp"
      ]
    }
     }
   }

🔧 Command Line Arguments

Jenkins MCP supports the following command line arguments:

# Basic usage
jenkins [options]

# Available options:
  --transport {stdio,sse,http}  # Transport mode (default: stdio)
  --host HOST                   # Bind host (default: 0.0.0.0)
  --port PORT                   # Bind port (default: 8000)
  --config, -c CONFIG           # Config file path
  --scenarios, -s SCENARIOS     # Scenario file path

# Usage examples:
jenkins --config my-config.yaml --scenarios my-scenarios.yaml
jenkins --transport sse --port 8080 --scenarios custom-scenarios.yaml

🔧 Traditional Startup

# Local development
python -m jenkins --transport stdio

# Use custom config and scenarios
python -m jenkins --config config.yaml --scenarios scenarios.yaml

# Web service
uvicorn jenkins.server:server --reload --host 0.0.0.0 --port 8000

📋 Available Tools (11)

🔧 Server Management

🎯 Intelligent Scenarios (Recommended Workflow)

🔍 Job Search and Management

⚙️ Build Management

🚀 Job Creation and Management

🚀 Recommended Workflow

Scenario-based Deployment (Recommended)

graph TD
    A[get_scenario_list] --> B[User selects scenario]
    B --> C[search_jobs_by_scenario]
    C --> D[get_job_parameters]
    D --> E[trigger_build]
    E --> F[get_build_status]

General Job Search

graph TD
    A[get_server_names] --> B[search_jobs]
    B --> C[get_job_parameters] 
    C --> D[trigger_build]
    D --> E[get_build_status]

Job Creation Workflow

graph TD
    A[Prepare Jenkinsfile] --> B[create_or_update_job_from_jenkinsfile]
    B --> C[Job created/updated in MCPS/username folder]
    C --> D[trigger_build]
    D --> E[get_build_status]

💡 Usage Examples

Scenario-based Deployment Example

# 1. Get available scenarios
"Get the list of available Jenkins scenarios"

# 2. Select scenario and search jobs
"Search jobs for the 'Sync Image to mldc' scenario"

# 3. Trigger build
"Trigger image sync task, image address is docker.io/user/app:latest"

Direct Operation Example

# 1. View available servers
"Show all available Jenkins servers"

# 2. Search jobs
"Search for jobs containing 'deploy' on the shlab server"

# 3. Get parameters and trigger
"Get parameter definitions for job 'release/deploy/app'"
"Trigger build with parameters: {'APP_NAME': 'myapp', 'VERSION': '1.0.0'}"

Job Creation Example

# 1. Create a new test job
"Create a new Jenkins job named 'my-test-job' on shlab server with this Jenkinsfile:
pipeline {
    agent any
    stages {
        stage('Test') {
            steps {
                echo 'Hello World'
            }
        }
    }
}"

# 2. Update existing job
"Update the 'my-test-job' with a new Jenkinsfile that includes deployment steps"

🔍 Enhanced Job Information

When searching or getting job information, the following details are returned:

• Basic Info: Job name, full name, URL, description

• Status: Buildable status, color indicator, parameterization status

• Build History: Last build number, last build URL

• Parameters: Complete parameter definitions with types and default values

🏗️ Job Creation Features

Automatic Directory Management

• User Organization: All created jobs are organized under MCPS/{username}/ directory

• Username Extraction: Automatically extracts username from Jenkins server configuration (handles email formats)

• Folder Creation: Automatically creates necessary folder structure

• Nested Folders: Supports creating jobs in nested folder paths

Job Creation Process

1. Folder Structure: Jobs are created in MCPS/{username}/{optional_folder_path}/

2. Conflict Handling: Automatically detects existing jobs and updates configuration

3. Pipeline Jobs: Creates pipeline jobs with sandbox security enabled

4. Error Recovery: Robust error handling for folder creation and job updates

🎯 Pre-configured Scenarios

Jenkins MCP comes with 3 common DevOps scenarios:

🎨 Custom Scenario Configuration

📁 Scenario File Support

Jenkins MCP supports multiple ways to configure custom scenarios:

1. Standalone Scenario File (Recommended):

   # Create custom scenario file
   cp scenarios.example.yaml scenarios.yaml
   
   # Specify scenario file at startup
   jenkins --scenarios scenarios.yaml

2. Environment Variable:

   export JENKINS_MCP_SCENARIOS_FILE="/path/to/my-scenarios.yaml"
   jenkins

3. Configure in config.yaml:

   scenarios:
     "Custom Deployment":
       description: "Custom application deployment scenario"
       server: "your-jenkins"
       job_path: "custom/deploy/"
       prompt_template: "Execute custom deployment task. Please confirm deployment parameters?"

🔄 Scenario Merge Rules

• Default Scenarios: Load built-in scenarios from scenarios.default.yaml

• User Scenarios: Load from custom scenario file

• Merge Strategy: User scenarios take precedence, same-name scenarios override defaults

📝 Scenario File Example

Create a scenarios.yaml file:

scenarios:
  "Database Backup":
    description: "Execute database backup task"
    server: "production"
    job_path: "backup/database/"
    prompt_template: "Execute database backup task. Please select the database and backup type?"

  "Performance Test":
    description: "Run application performance test"
    server: "test"
    job_path: "test/performance/"
    prompt_template: "Execute performance test. Please select test scenario and load parameters?"

  # Override default scenario
  "Deploy Application":
    description: "My custom deployment process"
    server: "my-jenkins"
    job_path: "custom/deploy/"
    prompt_template: "Execute custom deployment. Please confirm deployment configuration?"

🧪 Testing

Unit Tests

cd mcps/jenkins
pytest tests/ -v

Docker Test

# Build and test
docker build -t jenkins-mcp-test .
docker run --rm jenkins-mcp-test jenkins --help

MCP Inspector Testing

# Test with MCP Inspector
npx @modelcontextprotocol/inspector docker run --rm -i -v ./config.yaml:/app/config.yaml jenkins-mcp

🔧 Development

Local Development Environment

# Install development dependencies
pip install -e ".[dev]"

# Run code checks
ruff check src/
mypy src/

# Format code
ruff format src/

Contribution Guide

1. Fork this repository

2. Create a feature branch (git checkout -b feature/amazing-feature)

3. Commit your changes (git commit -m 'Add amazing feature')

4. Push to the branch (git push origin feature/amazing-feature)

5. Open a Pull Request

📚 Documentation

• Tool Documentation - Complete tool list and usage

• FastMCP Documentation - MCP framework docs

• Model Context Protocol - MCP protocol standard

🆘 Troubleshooting

Common Issues

Q: Failed to connect to Jenkins server?
A: Check network, URL, and authentication info. Use validate_jenkins_config() to validate config.

Q: Build parameter validation failed?
A: Use get_job_parameters() to check required parameters and ensure all are provided.

Q: Docker container failed to start?
A: Check config file mount path and environment variable settings.

Q: Job creation failed with 500 error?
A: Check Jenkins permissions and CSRF settings. The tool automatically handles CSRF tokens.

Q: Cannot create job in specified folder?
A: Ensure you have permission to create folders and jobs. Jobs are automatically organized under MCPS/{username}/.

Log Debugging

# Enable detailed logs
export JENKINS_MCP_LOG_LEVEL=DEBUG
jenkins --transport stdio

Performance Optimization

• Multi-level Directory Support: Efficiently handles nested Jenkins folders

• Intelligent Parameter Detection: Reduces API calls through smart caching

• CSRF Token Management: Automatic token handling for secure Jenkins instances

📄 License

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

🤝 Support

If you have questions or suggestions:

1. Check known issues in Issues

2. Create a new Issue to report problems

3. Contact the development team for support

Jenkins MCP - Make Jenkins automation easier 🚀