Jmeter MCP Server - MCP Server

🚀 JMeter MCP Server

This is a Model Context Protocol (MCP) server that allows executing JMeter tests through MCP-compatible clients and analyzing test results.

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Anthropic Cursor Windsurf

📋 Features

JMeter Execution

📊 Execute JMeter tests in non-GUI mode
🖥️ Launch JMeter in GUI mode
📝 Capture and return execution output
📊 Generate JMeter report dashboard

Test Results Analysis

📈 Parse and analyze JMeter test results (JTL files)
📊 Calculate comprehensive performance metrics
🔍 Identify performance bottlenecks automatically
💡 Generate actionable insights and recommendations
📊 Create visualizations of test results
📑 Generate HTML reports with analysis results

🛠️ Installation

Local Installation

Install uv:
Ensure JMeter is installed on your system and accessible via the command line.

⚠️ Important: Make sure JMeter is executable. You can do this by running:

chmod +x /path/to/jmeter/bin/jmeter

Install required Python dependencies:

pip install numpy matplotlib

Configure the .env file, refer to the .env.example file for details.

# JMeter Configuration
JMETER_HOME=/path/to/apache-jmeter-5.6.3
JMETER_BIN=${JMETER_HOME}/bin/jmeter

# Optional: JMeter Java options
JMETER_JAVA_OPTS="-Xms1g -Xmx2g"

💻 MCP Usage

Connect to the server using an MCP-compatible client (e.g., Claude Desktop, Cursor, Windsurf)
Send a prompt to the server:

Run JMeter test /path/to/test.jmx

MCP compatible client will use the available tools:

JMeter Execution Tools

🖥️ execute_jmeter_test: Launches JMeter in GUI mode, but doesn't execute test as per the JMeter design
🚀 execute_jmeter_test_non_gui: Execute a JMeter test in non-GUI mode (default mode for better performance)

Test Results Analysis Tools

📊 analyze_jmeter_results: Analyze JMeter test results and provide a summary of key metrics and insights
🔍 identify_performance_bottlenecks: Identify performance bottlenecks in JMeter test results
💡 get_performance_insights: Get insights and recommendations for improving performance
📈 generate_visualization: Generate visualizations of JMeter test results

🏗️ MCP Configuration

Add the following configuration to your MCP client config:

{
    "mcpServers": {
      "jmeter": {
        "command": "/path/to/uv",
        "args": [
          "--directory",
          "/path/to/jmeter-mcp-server",
          "run",
          "jmeter_server.py"
        ]
      }
    }
}

✨ Use Cases

Test Execution

Run JMeter tests in non-GUI mode for better performance
Launch JMeter in GUI mode for test development
Generate JMeter report dashboards

Test Results Analysis

Analyze JTL files to understand performance characteristics
Identify performance bottlenecks and their severity
Get actionable recommendations for performance improvements
Generate visualizations for better understanding of results
Create comprehensive HTML reports for sharing with stakeholders

🛑 Error Handling

The server will:

Validate that the test file exists
Check that the file has a .jmx extension
Validate that JTL files exist and have valid formats
Capture and return any execution or analysis errors

📊 Test Results Analyzer

The Test Results Analyzer is a powerful feature that helps you understand your JMeter test results better. It consists of several components:

Parser Module

Supports both XML and CSV JTL formats
Efficiently processes large files with streaming parsers
Validates file formats and handles errors gracefully

Metrics Calculator

Calculates overall performance metrics (average, median, percentiles)
Provides endpoint-specific metrics for detailed analysis
Generates time series metrics to track performance over time
Compares metrics with benchmarks for context

Bottleneck Analyzer

Identifies slow endpoints based on response times
Detects error-prone endpoints with high error rates
Finds response time anomalies and outliers
Analyzes the impact of concurrency on performance

Insights Generator

Provides specific recommendations for addressing bottlenecks
Analyzes error patterns and suggests solutions
Generates insights on scaling behavior and capacity limits
Prioritizes recommendations based on potential impact

Visualization Engine

Creates time series graphs showing performance over time
Generates distribution graphs for response time analysis
Produces endpoint comparison charts for identifying issues
Creates comprehensive HTML reports with all analysis results

📝 Example Usage

# Run a JMeter test and generate a results file
Run JMeter test sample_test.jmx in non-GUI mode and save results to results.jtl

# Analyze the results
Analyze the JMeter test results in results.jtl and provide detailed insights

# Identify bottlenecks
What are the performance bottlenecks in the results.jtl file?

# Get recommendations
What recommendations do you have for improving performance based on results.jtl?

# Generate visualizations
Create a time series graph of response times from results.jtl