What is a #guardrail MCP server?
An MCP server tagged #guardrail implements the Model Context Protocol so AI assistants like Claude, Cursor, and VS Code can access guardrail-related tools, data, or APIs.
2 #guardrail MCP Servers & Clients
Every MCP server and client below is tagged #guardrail — install one to give Claude, Cursor, VS Code, or any other MCP-compatible client access to guardrail tools.
All
NM
NOVA MCP lets you configure NOVA (the prompt pattern matching) as a guardrail for your AI system.
fr0gger
The NOVA MCP Security Gateway is a prompt-validation service that runs first in your Model Context Protocol (MCP) chain. It loads Nova rules (in .nov format), checks each incoming prompt against these rules, and blocks any that match high-severity security or jailbreak patterns.
Added last year
Verify Action
Armada735
MCP server issuing HMAC-attested receipts for AI agent tool-call evidence (verify_action_receipt.v0 reference impl)
Added 3 months ago
Frequently asked questions
Common questions about MCP servers and clients tagged #guardrail
How many #guardrail MCP servers and clients are there?
mcp.so currently lists 2 MCP servers and clients tagged #guardrail.
How do I install a #guardrail MCP server?
Open any server below and copy its install snippet into Claude Desktop, Cursor, VS Code, or another MCP client's configuration — remote servers need no separate download.