LocalFree server, account needed

Cyberchef API MCP server

slouchd/cyberchef-api-mcp-server

Use CyberChef operations through the CyberChef server API.

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Install Cyberchef API in Claude Code

This server doesn't publish a package to a registry, so follow the install steps in its README. Once it runs, register it with Claude Code:

Claude Code
claude mcp add cyberchef-api -- <command to start the server>

Frequently asked questions

What does the Cyberchef API MCP server do?

Use CyberChef operations through the CyberChef server API.

Is the Cyberchef API MCP server free?

The server is free, but you will likely need an account. The server itself is free, but it connects to a service that needs an account or API key, which may have paid tiers. Check the provider for current pricing.

Does Cyberchef API run locally or remotely?

Local. Runs on your machine (stdio). You install it with npx, uvx, Docker or from source.

How do I add Cyberchef API to Claude Code?

Follow the install steps in the project's README at https://github.com/slouchd/cyberchef-api-mcp-server, then register it with "claude mcp add".

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