Python execution
Python is optional. Nerve omits python_exec when no runtime is discovered, and Settings can disable the tool or set the executable path. A Python path change is the server setting confirmed to refresh runtime availability immediately.
A call accepts exactly one inline script or script-file path. It is finite, non-interactive, has no stdin, and allows a timeout up to 600 seconds. Large output and files can be written under NERVE_PYTHON_ARTIFACT_DIR and returned as artifacts.
Environment overrides with sensitive-looking keys are rejected so an agent cannot casually supply obvious secrets through the tool argument. This does not scrub secrets inherited by the Python process or printed by user code.
Choose tasks for servers
Section titled “Choose tasks for servers”Do not use Python execution for web servers, watchers, daemons, or scripts waiting for input. Use a supervised background task.