High-confidence security finding: this module is effectively a file-based remote command execution mechanism. It reads untrusted JSON from command_file and executes command_data['command'] verbatim via exec() inside the Houdini process, with access to the hou runtime and with stdout/results persisted to response_file. It also lacks authentication/authorization, validation, and sandboxing. If an attacker can write to or influence the command file (or influence the file paths via argv in the deployment context), they can achieve arbitrary code execution, data theft/exfiltration via returned stdout, and sabotage. Recommended action: treat as extremely dangerous; remove or strictly isolate and redesign (e.g., eliminate exec, use a constrained command DSL, add authentication, and lock down file paths/permissions).