Shell FAQs

Question 1

What is Shell (shell-mcp)?

Accepted Answer

Shell is a Model Context Protocol (MCP) server designed for secure shell command execution. It provides advanced command whitelisting, user confirmation, and comprehensive security controls, ideal for developers and LLM agents.

Question 2

What transports are supported by Shell?

Accepted Answer

Shell offers support for multiple transports to facilitate integration, including standard I/O (stdio), Server-Sent Events (SSE), and streamable HTTP.

Question 3

How does Shell ensure secure command execution?

Accepted Answer

Shell secures execution through advanced command whitelisting/blacklisting, user confirmation for non-whitelisted commands (via MCP elicitation), restrictions on shell features (like pipes and redirects), timeout protection, and AST-based command validation.

Question 4

Who can benefit from using Shell?

Accepted Answer

Developers, AI engineers, and LLM agents seeking a robust and controlled environment for executing shell commands. It's particularly useful for integrating shell operations into automated workflows or AI systems where security and control are paramount.

Question 5

What types of command security policies does Shell support?

Accepted Answer

Shell supports flexible command security policies, including traditional whitelisting (only allowed commands run), 'allow-all' with specific exceptions (blacklisting), and enhanced default security where only explicitly disabled commands are blocked.

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