Is Stdio Shellguard free?

Yes, Stdio Shellguard is free to use.

How do I install Stdio Shellguard?

Stdio Shellguard is a local plugin. Install it using npm package: mcp-stdio-shellguard and add the generated configuration snippet to your AI app's MCP config file. Then restart your AI app.

Is Stdio Shellguard safe to use?

Stdio Shellguard scored 6.2/10 (moderate risk) in MCP Marketplace's automated security scan. It has 1 high or critical finding to review. It's listed, but review the security report on this page before installing.

What AI apps work with Stdio Shellguard?

Stdio Shellguard uses the Model Context Protocol (MCP) and works with any MCP-compatible AI app, including Claude, ChatGPT / Codex, Gemini, Copilot, Cursor, and more.

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Stdio Shellguard MCP Server

by Studiomeyer Io

Developer ToolsModerate6.2MCP RegistryLocal

Free

Server data from the Official MCP Registry

Defense-in-depth for MCP stdio servers: shell-injection guard, AST audit CLI, RCE blocking.

About

Defense-in-depth for MCP stdio servers: shell-injection guard, AST audit CLI, RCE blocking.

Security Report

6.2

Moderate6.2Moderate Risk

mcp-stdio-shellguard is a well-engineered defensive security library with clear purpose and proper implementation. The server correctly implements access controls through an allowlist-based architecture, includes comprehensive anti-pattern detection for shell injection vulnerabilities, and properly validates user input. Minimal code quality observations (environment variable scope, error message consistency) do not materially impact security posture. Supply chain analysis found 1 known vulnerability in dependencies (1 critical, 0 high severity). Package verification found 1 issue.

6 files analyzed · 5 issues found

Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.

Permissions Required

This plugin requests these system permissions. Most are normal for its category.

File System Read

Reads files on your machine. Normal for tools that analyze or process local data.

File System Write

Writes or modifies files on your machine. Check that this is expected for the tool.

HTTP Network Access

Connects to external APIs or services over the internet.

Shell Command Execution

Runs commands on your machine. Be cautious — only use if you trust this plugin.

env_vars

Check that this permission is expected for this type of plugin.

process_spawn

Check that this permission is expected for this type of plugin.

system_info

Check that this permission is expected for this type of plugin.

How to Install

Add this to your MCP configuration file:

{
  "mcpServers": {
    "io-studiomeyer-stdio-shellguard": {
      "args": [
        "-y",
        "mcp-stdio-shellguard"
      ],
      "command": "npx"
    }
  }
}

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Stdio Shellguard MCP Server

About

Security Report

Findings (5)Action required

Permissions Required

How to Install

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