How do I use Guardrail MCP Server?

1. Click on "Deploy Server". 2. Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state. 3. In the chat, type @ followed by the MCP server name and your instructions, e.g., "@Guardrail MCP Server check if this user input is safe: 'Hello, how are you?'" That's it! The server will respond to your query, and you can continue using it as needed. Here is a step-by-step guide with screenshots.

Minimal MCP Server (Python)

This is a minimal Model Context Protocol (MCP) server using the official Python SDK.

Features

Tool: guardrail(context: str) -> bool — Checks if the provided context is safe (no code injection or harmful content). Returns True if safe, False otherwise.

Related MCP server: Sandbox MCP

Quick Start

Install dependencies:
```
pip install -r requirements.txt
```
Run the server:
```
python main.py
```

Test with MCP Inspector

To test and explore your server with a GUI:

mcp dev main.py

Install in Claude Desktop

To use this MCP server as a tool in Claude Desktop:

Make sure you have Claude Desktop installed.
In your terminal, run:
```
mcp install main.py
```
The server will appear as a tool in Claude Desktop, ready to use.

References

This server cannot be deployed

One endpoint for every MCP toolRayrun runs every MCP server behind one URL and holds the credentials. Each call is decided per client, tool, and argument, then recorded.ray.runAd

Maintenance

ActivityInactive

ResponsivenessNo issues

Resources

GitHub Repository

Need Help?

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