Click on "Install Server".
Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state.
In the chat, type
@followed by the MCP server name and your instructions, e.g., "@Guardrail MCP Servercheck 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). ReturnsTrueif safe,Falseotherwise.
Related MCP server: CyberMCP
Quick Start
Install dependencies:
pip install -r requirements.txtRun the server:
python main.py
Test with MCP Inspector
To test and explore your server with a GUI:
mcp dev main.pyInstall 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.pyThe server will appear as a tool in Claude Desktop, ready to use.
References
This server cannot be installed
Resources
Looking for Admin?
Admins can modify the Dockerfile, update the server description, and track usage metrics. If you are the server author, to authenticate as an admin.