guardrails

About guardrails

Use guardrails with your agent

claude mcp add guardrails -- npx -y guardrails-mcp-server

{
  "mcpServers": {
    "guardrails": {
      "command": "npx",
      "args": [
        "-y",
        "guardrails-mcp-server"
      ]
    }
  }
}

Frequently asked questions

What is guardrails?

guardrails is an MCP (Model Context Protocol) server by expertvagabond in the Autonomous Agents category. AI Agent Guardrails MCP server - security layer

How do I connect guardrails to Claude, Cursor, or another MCP client?

Install guardrails from its npm package (guardrails-mcp-server) and register it under "mcpServers" in your client's MCP configuration — for example claude_desktop_config.json or Cursor's mcp.json — then restart the client.

Is guardrails open source?

Yes — the source code is public at github.com/expertvagabond/guardrails-mcp-server, with 1 GitHub stars.

Can AI agents pay to use guardrails?

Not yet through Loomal — guardrails is listed as a free directory entry. If its maintainer verifies ownership, they can set per-call USDC pricing that agents pay over x402, with settlement on Base.