Jenkins MCP Server Enterprise

Jenkins MCP server for multi-instance routing, build diagnostics, and optional vector search.

A Model Context Protocol (MCP) server for Jenkins that provides build management, log inspection, failure diagnostics, and multi-instance configuration. The maintained setup paths in this repository are source install and Docker/Compose.

What It Does

• Trigger builds synchronously or asynchronously
• Find jobs before triggering or inspecting them
• Inspect job definitions and source locations
• Retrieve logs and run targeted log-search tools
• Discover downstream and sub-build hierarchies
• Inspect recent builds or a window around a specific build
• Diagnose build failures with configurable recommendations
• Route each tool call to the correct Jenkins instance based on jenkins_url
• Expose semantic_search only when vector search is enabled
• Expose apply_job_edit only when server-side job editing is enabled

Quick Start

Prerequisites

• Python 3.10+
• Jenkins API access
• Jenkins username and API token
• Docker and Docker Compose if you want container deployment
• Qdrant if you want semantic_search

Install from Source

git clone https://github.com/Jordan-Jarvis/jenkins-mcp-enterprise
cd jenkins-mcp-enterprise
python3 -m pip install -e .

Understand the Two Config Layers

The server uses two configuration layers:

• Primary server config: config/mcp-config.yml
• Diagnostic config: loaded from one of:
  • --diagnostic-config /path/to/file.yml
  • JENKINS_MCP_DIAGNOSTIC_CONFIG=/path/to/file.yml
  • config/diagnostic-parameters.yml
  • bundled defaults in jenkins_mcp_enterprise/diagnostic_config/diagnostic-parameters.yml

You always need the primary server config. You only need a project-local diagnostic config file if you want to override the bundled diagnostic defaults.

Create the Primary Server Config

mkdir -p config
cp config/mcp-config.example.yml config/mcp-config.yml

Edit config/mcp-config.yml with your Jenkins URLs and credentials.

If you want the optional Jenkins-managed job edit workflow for non-SCM-backed jobs, also set:

settings:
  enable_job_editing: true
  job_edit_workspace_dir: "/tmp/mcp-jenkins/job-definitions"

Optional Project-Local Diagnostic Override

Create this only if you want to tune diagnose_build_failure:

cat > config/diagnostic-parameters.yml << 'ENDDIAG'
semantic_search:
  min_diagnostic_score: 0.65
  max_total_highlights: 4

recommendations:
  max_recommendations: 5
ENDDIAG

If you want semantic search, start the local vector stack and set disable_vector_search: false with vector.host: "http://localhost:6333":

./scripts/start_dev_environment.sh

Docker and Compose

cp config/mcp-config.example.yml config/mcp-config.yml
./start-jenkins_mcp_enterprise.sh

See README-Docker.md for the container deployment flow.

Start the Server

jenkins_mcp_enterprise --config config/mcp-config.yml

Connect to Claude Desktop

Add to ~/.claude_desktop_config.json:

{
  "mcpServers": {
    "jenkins": {
      "command": "jenkins_mcp_enterprise",
      "args": ["--config", "config/mcp-config.yml"]
    }
  }
}

Usage Notes

• Pass full Jenkins build URLs when a tool or prompt relies on jenkins_url.
• In multi-Jenkins setups, each tool call resolves exactly one configured instance from jenkins_url. The server does not fan out across all configured Jenkins instances for a single call.
• semantic_search is available only when vector search is enabled.
• apply_job_edit is available only when settings.enable_job_editing: true.
• get_job_definition returns SCM location details for SCM-backed pipelines. For inline pipelines, it stages a local Groovy file for patch/edit/upload. For other Jenkins-managed jobs, it stages config.xml.
• diagnose_build_failure always uses a diagnostic config layer. If you do not provide a project-local override, the bundled defaults are used.
• The Docker image includes ripgrep, so ripgrep_search and navigate_log work in container deployments.

Common Usage Patterns

Analyze this failed build: https://jenkins.company.com/job/api-service/456/
Find the root cause in this nested pipeline: https://jenkins.company.com/job/monorepo/job/main/789/
Show me the test failure section from this build: https://jenkins.company.com/job/tests/321/
Find similar authentication failures in recent builds

Available Tools

Tool	Purpose
trigger_build	Start a build and wait for completion
trigger_build_async	Queue a build without waiting for completion
trigger_build_with_subs	Trigger a build and track downstream/sub-build execution
get_jenkins_job_parameters	Inspect job parameters before triggering builds
find_jobs	Search jobs by name, path, or URL on one resolved Jenkins instance
list_job_builds	List recent builds for a job, or a small window around a target build number
get_build_info	Fetch metadata for a specific build or lastBuild
get_job_definition	Inspect whether a job is SCM-backed, inline, multibranch, or XML-backed
ripgrep_search	Search logs with regex and context windows
filter_errors_grep	Filter logs with common error-oriented patterns
navigate_log	Jump to sections or occurrences inside a log
get_log_context	Fetch targeted log ranges or chunks
diagnose_build_failure	AI-assisted failure diagnosis using logs, hierarchy data, and configured recommendations
semantic_search	Vector-backed similarity search across log chunks when vector search is enabled
apply_job_edit	Upload a locally edited staged job definition back to Jenkins when job editing is enabled

Configuration Documentation

• Configuration Guide
• Diagnostic Config Overview
• Diagnostic Parameters Guide
• Diagnostic Parameters Quick Reference

Development

# Start local supporting services when vector search is enabled
./scripts/start_dev_environment.sh

# Run tests
python3 -m pytest tests/ -v

# Format code
python3 -m black .

License

GPL v3