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

Q: Can I use Cursor to debug a failing LoadNinja (Real-Browser Load Testing) scenario?

Yes, the Cursor agent can query gettestrun and gettestrunstats to pull the exact errors and latency spikes. It then cross-references these issues with your local files to help you debug performance bottlenecks.

Q: How do I configure the LoadNinja (Real-Browser Load Testing) MCP Server for my Cursor project?

Add the server configuration to your .cursor/mcp.json file in your project root. Once saved, Cursor's AI features will automatically detect the new tools and let you call them from the chat sidebar.

Trigger LoadNinja browser tests and inject live performance stats directly into your Cursor codebase.

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Connect LoadNinja (Real-Browser Load Testing) MCP to Cursor

Create your Vinkius account to connect LoadNinja (Real-Browser Load Testing) to Cursor 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 Cursor

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Run performance audits directly on your code

Stop guessing if your latest code change broke performance. While writing code in Cursor, you can ask the Composer or Agent to trigger a LoadNinja scenario using `run_scenario` and monitor the impact immediately without leaving your editor. The Cursor agent uses `get_test_run_stats` to fetch the raw performance metrics of your latest commit. It can then compare these metrics to past runs fetched via `list_test_runs` to highlight performance regressions directly next to your code.

Map real browser errors to local source files

When your load tests fail, you need to know why. Cursor uses `get_test_run` to retrieve details of completed test runs and parses the error logs to identify which endpoints or scripts failed under load. Because your agent has access to both your local filesystem and the LoadNinja MCP Server, it can trace browser-side execution failures back to the exact lines of code in your open editor tabs and suggest immediate fixes.

Manage test configurations from your editor

Keep your test configurations aligned with your codebase changes. Use Cursor to pull your scenario details using `get_scenario` and check if your target URLs match your local dev server settings. If you need to adjust browser targets or load locations, your agent can query `list_browsers` and `list_locations` using the LoadNinja MCP Server integration to verify what options are available before you commit your configuration files.

Setup guide

Set up LoadNinja (Real-Browser Load Testing) MCP in Cursor

Prerequisites

Cursor installed (macOS, Windows, or Linux)
Active Vinkius subscription with a valid endpoint token

1

Open MCP Settings

Go to Cursor Settings → MCP or open the Command Palette (Cmd+Shift+P / Ctrl+Shift+P) and search for "MCP: Add Server".
2

Add the LoadNinja (Real-Browser Load Testing) MCP

Cursor will create or open .cursor/mcp.json in your project root. Paste the JSON snippet on the right. Replace [YOUR_TOKEN_HERE] with your endpoint token from cloud.vinkius.com.
3

Enable Agent mode

Open Composer (Cmd+I / Ctrl+I) and switch to Agent mode using the dropdown at the top. MCP tools are only available in Agent mode.
4

Verify the connection

Ask Cursor something like "List my recent LoadNinja (Real-Browser Load Testing) transactions." If the MCP tools are loaded correctly, Cursor will call the LoadNinja (Real-Browser Load Testing) tools automatically. You can also check Settings → MCP for a green status indicator.

.cursor/mcp.json

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

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

Enter Agent mode in Cursor and ask it to run a test. The agent will use `list_scenarios` to find your target test and then trigger it using `run_scenario` with your specified virtual user parameters.

Yes, the Cursor agent can query `get_test_run` and `get_test_run_stats` to pull the exact errors and latency spikes. It then cross-references these issues with your local files to help you debug performance bottlenecks.

Add the server configuration to your `.cursor/mcp.json` file in your project root. Once saved, Cursor's AI features will automatically detect the new tools and let you call them from the chat sidebar.

Absolutely. When you ask Cursor to trigger a test, specify the duration in minutes. The agent passes this value directly to the `run_scenario` tool to make sure your test stops on time and doesn't waste your virtual user limits.

Your API tokens and test run statistics are stored locally on your machine and never pass through any third-party databases. The MCP Server processes your test run stats locally, only sending the raw text outputs to Cursor's AI model to help you refactor your code.

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