How to Use the LoadNinja (Real-Browser Load Testing) MCP in Claude

Q: Can Claude Desktop monitor live virtual user metrics during a LoadNinja (Real-Browser Load Testing) run?

Yes, Claude Desktop uses the gettestrunstats tool to pull raw metrics during or after a run. Your agent can format these numbers into a readable breakdown of response times and error rates directly in your sidebar.

Q: What is the quickest way to configure this LoadNinja MCP Server on my local Claude Desktop app?

Open your claudedesktopconfig.json file and add the server configuration under the mcpServers block with your API credentials. Restart Claude Desktop, and you will see the hammer icon indicating the tools are ready.

Trigger real-browser LoadNinja load tests and review performance metrics directly inside your Claude Desktop chat.

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Connect LoadNinja (Real-Browser Load Testing) MCP to Claude Desktop

Create your Vinkius account to connect LoadNinja (Real-Browser Load Testing) to Claude Desktop and route execution through our secure gateway. The platform manages server hosting, runtime updates, and security layers. Configuration requires no manual server provisioning.

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Setup LoadNinja (Real-Browser Load Testing) with Claude Desktop

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Kick off test runs directly from chat

Stop context-switching to the web UI when you need to run a quick performance test. With this configured as an MCP Server in Claude Desktop, you can ask your agent to fetch your configured scenarios using `list_scenarios` and instantly fire one off using `run_scenario` with custom virtual user counts. Claude Desktop spins up the test in the background and keeps you updated. If a run goes sideways or you notice your virtual user limits are running low via `get_account`, you can tell your agent to instantly kill the test with `stop_test_run` before you rack up unnecessary charges.

Analyze browser performance in real-time

Claude Desktop can fetch live execution logs and performance metrics while your tests are active. Your agent uses `list_test_runs` to locate active runs and pulls raw latency numbers using `get_test_run_stats` to show you exactly where your application is bottlenecked. You don't need to parse massive JSON payloads yourself. The desktop client reads the raw browser metrics and summarizes the exact page load times, script errors, and DOM load speeds in clean markdown tables right inside your chat window.

Audit test configurations and environments

Before running a massive test, you need to make sure your target environments match. This LoadNinja MCP Server integration lets Claude Desktop query `list_locations` and `list_browsers` to verify where your virtual users are spawning and which native browsers they are running. Ask your agent to compare your active test configuration from `get_scenario` against your target production environment. It will catch mismatched test regions or outdated browser targets before you waste your subscription limits on a bad run.

Setup guide

Set up LoadNinja (Real-Browser Load Testing) MCP in Claude Web or Desktop

1

Open Claude Settings

Go to claude.ai, click your profile icon, then navigate to Customize → Connectors.
2

Add Custom Connector

Click the "+" button and select Add custom connector. Paste your Vinkius endpoint URL: https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp Replace [YOUR_TOKEN_HERE] with your token from cloud.vinkius.com. For OAuth-protected servers, expand Advanced settings to add credentials.
3

Start a conversation

Open a new chat. The LoadNinja (Real-Browser Load Testing) MCP tools are available immediately — no restart needed.

Endpoint URL

https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp

No configuration file needed — paste the URL directly in the Claude web interface.

Available on Free (1 connector), Pro, Max, Team, and Enterprise plans.

Prerequisites

Claude Desktop installed (macOS or Windows)
Active Vinkius subscription with a valid endpoint token

1

Open Claude Desktop Settings

Click the menu icon at the top-left corner, go to Settings → Developer → Edit Config. This opens claude_desktop_config.json in your default text editor.
2

Paste the LoadNinja (Real-Browser Load Testing) MCP configuration

Copy the JSON snippet on the right into the mcpServers object. Replace [YOUR_TOKEN_HERE] with your endpoint token from cloud.vinkius.com.
3

Restart Claude Desktop

Close and reopen the application. Claude needs a full restart to load new MCPs — refreshing a conversation is not enough.
4

Verify the connection

Open a new conversation. Click the 🔌 icon at the bottom of the message input. You should see tools listed under loadninja-real-browser-load-testing-mcp.

json

{
  "mcpServers": {
    "loadninja-real-browser-load-testing-mcp": {
      "url": "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
    }
  }
}

Get your connection token →

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Common questions about LoadNinja (Real-Browser Load Testing) MCP in Claude Desktop

Open Claude Desktop and ask your agent to list your scenarios first. Once you pick one, tell the agent to execute it by specifying the virtual user count and duration. The agent calls `run_scenario` and reports the run ID back to you.

Yes, Claude Desktop uses the `get_test_run_stats` tool to pull raw metrics during or after a run. Your agent can format these numbers into a readable breakdown of response times and error rates directly in your sidebar.

Just tell your agent to stop the test. Claude Desktop will invoke the `stop_test_run` tool with your active run ID to instantly terminate the execution and prevent further virtual user consumption.

Open your `claude_desktop_config.json` file and add the server configuration under the `mcpServers` block with your API credentials. Restart Claude Desktop, and you will see the hammer icon indicating the tools are ready.

This local MCP Server runs inside a secure V8 sandbox on your machine, meaning your API tokens, scenario steps, and test run stats are never stored or exposed. Only the specific test results fetched via `get_test_run_stats` are passed to Claude Desktop to generate your performance summaries.

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