# Mcp Guardian

> Manage / Proxy / Secure your MCP Servers

- **Type:** MCP server
- **Install:** `agentstack add mcp-eqtylab-mcp-guardian`
- **Verified:** Yes — security-reviewed for prompt injection and unsafe behavior
- **Seller:** [eqtylab](https://agentstack.voostack.com/s/eqtylab)
- **Installs:** 0
- **Category:** [AI & ML](https://agentstack.voostack.com/c/ai-and-ml)
- **Latest version:** 0.1.0
- **License:** Apache-2.0
- **Upstream author:** [eqtylab](https://github.com/eqtylab)
- **Source:** https://github.com/eqtylab/mcp-guardian
- **Website:** https://mcp-guardian.org/

## Install

```sh
agentstack add mcp-eqtylab-mcp-guardian
```

Requires the [AgentStack CLI](https://agentstack.voostack.com/docs/cli). Works with Claude Code, Cursor, and any MCP-compatible agent.

## About

# MCP Guardian

[mcp-guardian.org](https://mcp-guardian.org)

## Overview

MCP Guardian manages your LLM assistant's access to MCP servers, handing you realtime control of your LLM's activity.

**📜 Message Logging** - See traces for all of an LLM's MCP server activity

**💂 Message Approvals** - Approve and deny individual tool call messages in real time

**🤖 Automated Message Scans** - Realtime automated checks for safety, privacy, etc (Coming Soon)

    

MCP Guardian also makes it a breeze to manage multiple MCP server configurations. Quickly switch between server collections without having to manually manage configuration files for your MCP host applications.

## Development

This project uses [nix](https://nixos.org/) to manage a development environment that can be used on Linux and macOS.

### Quick Start - Linux / macOS

1. [Install nix](https://nixos.org/download/)

2. Enable nix flakes
```bash
sudo sh -c 'echo "experimental-features = nix-command flakes" >> /etc/nix/nix.conf'
```

3. Enter dev shell
```bash
nix develop
```

4. Build project
```bash
just build-release
```

5. `mcp-guardian` and `mcp-guardian-proxy` are now in `_build/bin/` which is in `PATH` of the dev shell.

### Quick Start - Windows

1. [Install git](https://git-scm.com/downloads/win) with symlink support (otherwise you will need to restore `./mcp-guardian/bindings` before building).

2. [Install rustup](https://www.rust-lang.org/tools/install).

3. [Install nodejs](https://nodejs.org/en/download).

4. Install `yarn`.
```bash
npm install --global yarn
```

5. Install .dll dependencies. The easiest way to do this is to [install Visual Studio](https://visualstudio.microsoft.com/downloads/) and install the C++ development packages.

6. Install just
```bash
cargo install just
```

7. Enter repo root with `git-bash` (otherwise `just` won't work and you'll need to call `cargo directly`)

8. Build project
```bash
just build-release
```

### Justfile

```present just --list
Available recipes:
    build
    build-release
    clean
    do DIR +RECIPE
    do-all +RECIPE
    fmt
    fmt-check
    lint
    readme-check
    readme-update
    test
```

## Source & license

This open-source MCP server is cataloged on AgentStack and links to its original source — we do not rehost the code.

- **Author:** [eqtylab](https://github.com/eqtylab)
- **Source:** [eqtylab/mcp-guardian](https://github.com/eqtylab/mcp-guardian)
- **License:** Apache-2.0
- **Homepage:** https://mcp-guardian.org/

Install and usage instructions live in the source repository linked above.

## Pricing

- **Free** — Free

## Security capabilities

Automated source analysis of v0.1.0 — what this tool can access:

- **Network access:** no
- **Filesystem access:** no
- **Shell / process execution:** no
- **Environment & secrets:** no
- **Dynamic code execution:** no

*"Yes" means the capability is present in the source — more access means more to trust, not that it is unsafe.*


## Versions

- **0.1.0** — security scan: passed — Imported from the upstream source.

## Links

- Listing page: https://agentstack.voostack.com/l/mcp-eqtylab-mcp-guardian
- Seller: https://agentstack.voostack.com/s/eqtylab
- Browse the marketplace: https://agentstack.voostack.com/browse

---
Listed on AgentStack — the marketplace for AI agent skills and MCP servers. Every listing is security-reviewed. Creators keep 70%.