Regex-LE MCP Server: Install & Setup

Install Regex-LE in Claude Code

Claude Code

claude mcp add regex-le -- npx -y regex-le-mcp

mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)

{
  "mcpServers": {
    "regex-le": {
      "command": "npx",
      "args": [
        "-y",
        "regex-le-mcp"
      ]
    }
  }
}

Extract regular expressions from code, each with a ReDoS safety verdict.

Yes, most likely. Open source and no paid account or API key is mentioned in the listing. Check the provider for current pricing.

Local. Runs on your machine (stdio). You install it with npx, uvx, Docker or from source.

Run: claude mcp add regex-le -- npx -y regex-le-mcp

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