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Mcp Guardian

@rudraneel93

Repository

About Mcp Guardian

> MCP Guardian is a runtime security, cost governance, and health monitoring proxy for MCP infrastructure. Three-layer detection engine (regex → schema → LLM), YAML policy engine with hot-reload, 50+ secret patterns + Shannon entropy, AST command validation, JWT algorithm pinning

Config

Add this server to your MCP-compatible client using the configuration below.

{
  "mcpServers": {
    "mcp-guardian": {
      "command": "npx",
      "args": [
        "-y",
        "@mcp-guardian/server"
      ]
    }
  }
}

Tools

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We auto-extract tools from the README. The maintainer can list them under a ## Tools heading to populate this section.

Overview

What is MCP Guardian?

MCP Guardian is a runtime security, cost governance, and health monitoring proxy for MCP infrastructure. It uses a three‑layer detection engine (regex → schema → LLM), a YAML policy engine with hot‑reload, and provides enterprise observability.

How to use MCP Guardian?

Deploy MCP Guardian as a proxy between MCP clients and servers. Define security and cost policies using YAML files that support hot‑reload. Monitor security events, token costs, and server health through the built‑in web dashboard and Prometheus metrics.

Key features of MCP Guardian

  • Three‑layer detection engine (regex, schema, LLM)
  • YAML policy engine with hot‑reload
  • 50+ secret patterns and Shannon entropy detection
  • AST command validation and JWT algorithm pinning
  • Default‑deny fail‑closed security model
  • Token cost tracking via tiktoken
  • Health monitoring with circuit breakers
  • Prometheus metrics and web dashboard

Use cases of M

Comments

Basic information

Category

Developer Tools

Transports

stdio

Author

rudraneel93

Submitted by

Rudraneel Das

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