How to make ChatGPT actions robust and work well

Cgrinde

I've set up the attached schema to let ChatGPT manipulate Smartsheet items. It is unformtunatly limited to 30 operations.
Make a custom GPT and add this schema along with a Smartsheet API key, and it works somewhat. My question is if anyone else has done this and got it to work robustly.

SmartsheetSchema_for_Chat_GPT.txt