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🚀 ⚡️ locust-mcp-server

A Model Context Protocol (MCP) server implementation for running Locust load tests. This server enables seamless integration of Locust load testing capabilities with AI-powered development environments.

✨ Features

Simple integration with Model Context Protocol framework
Support for headless and UI modes
Configurable test parameters (users, spawn rate, runtime)
Easy-to-use API for running Locust load tests
Real-time test execution output
HTTP/HTTPS protocol support out of the box
Custom task scenarios support

Locust-MCP-Server

🔧 Prerequisites

Before you begin, ensure you have the following installed:

Python 3.13 or higher
uv package manager (Installation guide)

📦 Installation

Clone the repository:

git clone https://github.com/qainsights/locust-mcp-server.git

Install the required dependencies:

uv pip install -r requirements.txt

Set up environment variables (optional): Create a .env file in the project root:

LOCUST_HOST=http://localhost:8089  # Default host for your tests
LOCUST_USERS=3                     # Default number of users
LOCUST_SPAWN_RATE=1               # Default user spawn rate
LOCUST_RUN_TIME=10s               # Default test duration

🚀 Getting Started

Create a Locust test script (e.g., hello.py):

from locust import HttpUser, task, between

class QuickstartUser(HttpUser):
    wait_time = between(1, 5)

    @task
    def hello_world(self):
        self.client.get("/hello")
        self.client.get("/world")

    @task(3)
    def view_items(self):
        for item_id in range(10):
            self.client.get(f"/item?id={item_id}", name="/item")
            time.sleep(1)

    def on_start(self):
        self.client.post("/login", json={"username":"foo", "password":"bar"})

Configure the MCP server using the below specs in your favorite MCP client (Claude Desktop, Cursor, Windsurf and more):

{
  "mcpServers": {
    "locust": {
      "command": "/Users/naveenkumar/.local/bin/uv",
      "args": [
        "--directory",
        "/Users/naveenkumar/Gits/locust-mcp-server",
        "run",
        "locust_server.py"
      ]
    }
  }
}

Now ask the LLM to run the test e.g. run locust test for hello.py. The Locust MCP server will use the following tool to start the test:

run_locust: Run a test with configurable options for headless mode, host, runtime, users, and spawn rate

📝 API Reference

Run Locust Test

run_locust(
    test_file: str,
    headless: bool = True,
    host: str = "http://localhost:8089",
    runtime: str = "10s",
    users: int = 3,
    spawn_rate: int = 1
)

Parameters:

test_file: Path to your Locust test script
headless: Run in headless mode (True) or with UI (False)
host: Target host to load test
runtime: Test duration (e.g., "30s", "1m", "5m")
users: Number of concurrent users to simulate
spawn_rate: Rate at which users are spawned

✨ Use Cases

LLM powered results analysis
Effective debugging with the help of LLM

🤝 Contributing

Contributions are welcome! Please feel free to submit a Pull Request.

📄 License

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

Install Server

HTTP connection URL

security – no known vulnerabilities

license - permissive license

quality - confirmed to work

How are these scores calculated?

remote-capable server

The server can be hosted and run remotely because it primarily relies on remote services or has no dependency on the local environment.

Tools

run_locust

Locust 부하 테스트 기능과 AI 기반 개발 환경을 통합한 서버로, 사용자는 자연어 명령을 통해 성능 테스트를 실행할 수 있습니다.

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