LLM Sandbox MCP Server

What the code does

We read the source, 6 d ago · rules 995398eba69f

What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.

                process = subprocess.Popen(  # noqa: S603 # nosec B603

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Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

claude mcp add llm-sandbox -- uvx llm-sandbox

{
  "mcpServers": {
    "llm-sandbox": {
      "command": "uvx",
      "args": [
        "llm-sandbox"
      ]
    }
  }
}

[mcp_servers.llm-sandbox]
command = "uvx"
args = ["llm-sandbox"]

{
  "mcpServers": {
    "llm-sandbox": {
      "command": "uvx",
      "args": [
        "llm-sandbox"
      ]
    }
  }
}

{
  "servers": {
    "llm-sandbox": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "llm-sandbox"
      ]
    }
  }
}

Optional settings from the registry entry, left out of the block above: BACKEND (Container backend to use. Must match the installed extra: mcp-docker, mcp-podman, or mcp-k8s), DOCKER_HOST (Docker or Podman socket URL, e.g. unix:///var/run/docker.sock), KUBECONFIG (Path to kubeconfig file when BACKEND=kubernetes), NAMESPACE (Kubernetes namespace used for sandbox pods when BACKEND=kubernetes), COMMIT_CONTAINER (Commit the container after a run so installed libraries persist between sessions), KEEP_TEMPLATE (Keep the base image after the session ends to avoid re-pulling it on the next run), SANDBOX_NETWORK_MODE (Network mode for the sandbox container. Set to 'none' for hardened isolation. Docker and Podman backends only), SANDBOX_READ_ONLY (Mount the sandbox root filesystem read-only. Recommended: true. Docker and Podman backends only), SANDBOX_CAP_DROP (Comma-separated Linux capabilities to drop. Recommended: ALL. Docker and Podman backends only), SANDBOX_SECURITY_OPT (Comma-separated container security options, e.g. no-new-privileges. Docker and Podman backends only), SANDBOX_MEMORY (Memory limit for the sandbox container, e.g. 4g. Docker and Podman backends only), SANDBOX_CPUS (Fractional CPU allocation for the sandbox container, e.g. 1.5. Docker and Podman backends only).