Jenkins MCP Server.

Jenkins MCP Server.

An MCP server for interacting with a Jenkins CI/CD server. Allows you to trigger jobs, check build statuses, and manage your Jenkins instance through MCP.

Features

• Job Management: Trigger, list, and get detailed information about Jenkins jobs.
• Build Status: Check the status of specific builds and retrieve console logs.
• Queue Management: View items currently in the build queue.
• Server Information: Get basic information about the connected Jenkins server.
• LLM Integration: Includes prompts and configurations for summarizing build logs (demonstration).
• Transport Support: Supports both STDIO and Streamable HTTP transports.
• Input Validation: Uses Pydantic for robust input validation and error handling.
• Compatibility: Fully compatible with the MCP Gateway.

Prerequisites

• Python 3.12+
• A running Jenkins instance
• uv for package management

Installation

1. Clone the repository:

   git clone https://github.com/AshwiniGhuge3012/jenkins-mcp-server
   cd jenkins-mcp-server
   

2. Create a virtual environment:

   uv venv
   

3. Activate the virtual environment:

   source .venv/bin/activate
   

4. Install dependencies:

   uv pip install -e .
   

5. Create a .env file:Create a .env file in the project root and add your Jenkins credentials and URL.

   JENKINS_URL="http://your-jenkins-instance:8080"
   JENKINS_USER="your-username"
   JENKINS_API_TOKEN="your-api-token"
   MCP_PORT=8010
   

Usage

Running the Server

You can run the server in two modes:

1. STDIO Mode (for direct interaction)

python jenkins_mcp_server_enhanced.py

2. HTTP Mode (for use with MCP Gateway)

python jenkins_mcp_server_enhanced.py --transport streamable-http --port 8010

The port can be configured via the --port argument or the MCP_PORT environment variable.

Available Tools

Here is a list of the tools exposed by this MCP server:

trigger_job

• Description: Triggers a Jenkins job with optional parameters.
• Parameters:
  • job_name (string): The name of the Jenkins job.
  • params (object, optional): Job parameters as a JSON object. For multiselect parameters, pass an array of strings.
• Returns: A confirmation message with the queue URL.

get_job_info

• Description: Gets detailed information about a Jenkins job, including its parameters.
• Parameters:
  • job_name (string): The name of the Jenkins job.
• Returns: An object containing the job's description, parameters, and last build number.

get_build_status

• Description: Gets the status of a specific build.
• Parameters:
  • job_name (string): The name of the Jenkins job.
  • build_number (integer): The build number.
• Returns: An object with the build status, timestamp, duration, and URL.

get_console_log

• Description: Retrieves the console log for a specific build.
• Parameters:
  • job_name (string): The name of the Jenkins job.
  • build_number (integer): The build number.
  • start (integer, optional): The starting byte position for fetching the log.
• Returns: The console log text and information about whether more data is available.

list_jobs

• Description: Lists all available jobs on the Jenkins server.
• Parameters: None
• Returns: A list of job names.

get_queue_info

• Description: Gets information about builds currently in the queue.
• Parameters: None
• Returns: A list of items in the queue.

server_info

• Description: Gets basic information about the Jenkins server.
• Parameters: None
• Returns: The Jenkins version and URL.

summarize_build_log

• Description: (Demonstration) Summarizes a build log using a pre-configured LLM prompt.
• Parameters:
  • job_name (string): The name of the Jenkins job.
  • build_number (integer): The build number.
• Returns: A placeholder summary and the prompt that would be used.

Example Usage with mcp-cli

First, ensure the server is running in HTTP mode and registered with your MCP Gateway.

# Example: Triggering a job
mcp-cli cmd --server gateway --tool jenkins_server.trigger_job --tool-args '{"job_name": "my-test-job", "params": {"branch": "develop", "deploy": true}}'

# Example: Listing all jobs
mcp-cli cmd --server gateway --tool jenkins_server.list_jobs

Dependencies

• fastmcp
• pydantic
• requests
• python-dotenv

License

This project is licensed under the Apache 2.0 License.