CyberChef MCP server

This is a helper that connects your AI assistant to CyberChef, a well known free toolbox for working with data. CyberChef was made by GCHQ, and it can decode, encode, encrypt, compress and inspect all kinds of files and text. If you ever need to figure out what a strange block of text or a file actually is, this server lets your AI do that work for you.

What this MCP server does

You paste some text or data into the chat and tell your AI what you want to know or do with it. The AI picks the right CyberChef operation, or a chain of them, and asks this helper to run it. The helper runs the operation on your computer and sends the result back. Your AI then shows you the decoded text, the file, the numbers or the answer in the chat. You can also save a chain of steps as a recipe and reuse it later.

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What you can do with it

• Decode Base64, hex, URL encoding and many other formats
• Decrypt data with common methods like AES or XOR
• Compress or decompress files with gzip and similar formats
• Identify what kind of hash you are looking at
• Solve simple classical ciphers and RSA puzzles
• Generate QR codes and render images from data
• Save and reuse multi-step recipes for repeated work

Try asking your AI

• “Decode this Base64 string for me and tell me what it says”
• “What kind of hash is this and can you crack it”
• “This looks like a script someone obfuscated, can you clean it up so I can read it”
• “Take this file, unzip it and show me the JSON inside in a readable form”

What it gives back to you

You get the result of the operation right in the chat: decoded text, a cleaned up script, a list of possible hashes, an image, or a short explanation of what the data is. For bigger jobs you also get a summary of which steps were run. If something fails, the AI tells you what went wrong instead of guessing.

Before you start

Who it's for

Anyone who regularly deals with encoded, encrypted or messy data, like IT support, security analysts, developers and curious office workers.