cPanel automation script issue

We're currently scaling up our Website Maintenance & cPanel Management Services, and a core part of this involves automating routine cPanel tasks for our client accounts. Specifically, we're developing custom scripts for new email provisioning and service restarts to streamline our server management operations.

We're encountering an intermittent, non-descriptive error when attempting to execute a PHP script that leverages the uapi for cpanel automation. This script is designed to handle multiple sequential API calls—for instance, creating an email account, then setting its quota, then adding a forwarder. The issue isn't consistently reproducible, but when it occurs, the uapi command seems to fail with a generic exit status, providing no specific error message in the output.

# Example of the intermittent failure
/usr/local/cpanel/bin/uapi Email add_pop [email protected] password=securepass
json_output: {
  "status": 0,
  "errors": [
    "An unknown error occurred."
  ],
  "messages": null,
  "metadata": {}
}
# Subsequent uapi calls often fail or behave unexpectedly after this.

We're seeking expert advice on best practices for robust cpanel automation with uapi when dealing with complex sequential operations. Are there common pitfalls related to API throttling that might not manifest with explicit error codes? Or perhaps alternative methods or libraries that offer better reliability and error handling for critical server management tasks?