cmdxray MCP server

cmdxray is a small tool that reads a shell command and tells you what each part means and whether it is risky. It works fully offline, so nothing you paste leaves your computer. It is handy for anyone who copies commands from the internet or runs scripts they did not write.

What this MCP server does

You paste a command into your chat and ask your AI to check it. The AI sends that command to the cmdxray helper running on your machine. cmdxray breaks the command into pieces, explains each flag, pipe, redirect and subshell, and rates the whole thing as danger, caution or none. The AI then tells you what the command does and whether it is safe to run. Nothing is uploaded anywhere; it all happens on your computer.

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What you can do with it

• Explain what every flag and argument in a command does
• Rate a command as danger, caution or none
• Warn you about commands that download and run code unread
• Point out commands that run as root or delete critical files
• Show what a pipe, redirect or subshell is doing
• Give you a safer alternative for a risky command

What it gives back to you

You get a plain-English breakdown of the command, piece by piece. You also get a risk rating: danger, caution or none. If something is risky, you get a short explanation of why. All of this shows up right in your chat, so you can read it before you decide to run anything.

Before you start

Who it's for

Anyone who copies shell commands from the internet, runs scripts they did not write, or wants a second opinion before hitting Enter.