How to Use the Regex Toolkit MCP in Cursor

Q: How does Cursor use the Regex Toolkit to clean up code files?

Cursor calls the masksensitivedata tool when you ask the agent to clean a file. The server scans the target file, replaces emails and phone numbers with redacted tags, and Cursor writes the clean text back into your editor.

Feed Cursor clean, validated data by running Regex Toolkit directly inside your AI coding agent.

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Connect Regex Toolkit MCP to Cursor

Create your Vinkius account to connect Regex Toolkit to Cursor — we handle the hosting, security, and runtime updates so you don't have to. No server setup required.

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Setup Regex Toolkit with Cursor

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Extract live test data directly into Cursor files

When you are writing code in Cursor, your AI agent can read raw server logs and extract real test fixtures. It calls `extract_pattern` to grab actual emails and URLs from your environment and write them directly into your active editor buffer. This replaces manual copy-pasting during test generation. Your agent writes working code using real, formatted strings instead of hallucinated stubs, accelerating your local feedback loops.

Clean up raw data before committing code with this MCP Server

Keep production secrets out of your git history. While using Cursor agent mode to refactor code, you can have the agent run `mask_sensitive_data` on raw config files or database dumps inside your workspace. The tool instantly replaces actual emails and phone numbers with safe placeholders. This ensures you only commit clean, anonymous mock data to your repository while keeping your live workspace private.

Validate user input formats inside Cursor terminal tools

Stop writing fragile validation scripts by hand. Ask your Cursor agent to check your configuration files or environment variables using the `validate_pattern` tool. The tool returns an exact boolean match for emails, URLs, and phone numbers. Your agent can immediately tell you if a local configuration string is broken before you attempt to compile your project.

Setup guide

Set up Regex Toolkit 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 Regex Toolkit 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 Regex Toolkit transactions." If the MCP tools are loaded correctly, Cursor will call the Regex Toolkit tools automatically. You can also check Settings → MCP for a green status indicator.

.cursor/mcp.json

{
  "mcpServers": {
    "regex-toolkit-mcp": {
      "url": "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
    }
  }
}

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Independent Platform Disclaimer: Vinkius is an independent platform and is not affiliated with, endorsed by, sponsored by, verified by, or otherwise authorized by regex-toolkit. All third-party trademarks, logos, and brand names are the property of their respective owners. Their use on this website is strictly for informational purposes to identify service compatibility and interoperability.

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Common questions about Regex Toolkit MCP in Cursor

Cursor calls the `mask_sensitive_data` tool when you ask the agent to clean a file. The server scans the target file, replaces emails and phone numbers with redacted tags, and Cursor writes the clean text back into your editor.

Yes, you can configure it globally. Add the server endpoint to your global Cursor configuration file, and the agent will have access to `validate_pattern` in every workspace you open.

Not at all. The server uses highly optimized, non-backtracking regular expressions to run `extract_pattern` on your text, returning structured results to Cursor in milliseconds.

Watch the Cursor output panel or the agent chat logs. You will see active tool calls to `extract_pattern` or `validate_pattern` whenever the agent is analyzing raw text formats.

The MCP server runs in an isolated sandbox and never stores your files. When Cursor passes text containing sensitive emails, URLs, or phone numbers, the tool processes the match in memory, returns the result, and instantly discards the payload.

Use it with your favorite AI tools

Connect this server to Cursor, Claude, VS Code, and more.

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