{
  "name": "shell_exec",
  "version": "1.0",
  "entrypoint": "Tool",
  "description": "Execute shell commands in sandboxed environment",
  "args_schema": {
    "command": {"type": "string", "required": true, "description": "Shell command to execute"},
    "cwd": {"type": "string", "required": false, "description": "Working directory"},
    "stdin_secret": {"type": "string", "required": false, "description": "Data to pass via stdin"}
  },
  "requires_permission": true
}