This is the field reference you wish NetSuite had built into their docs from the start. It gives you internal IDs, field types, required status, and search capabilities for all 272 record types in one queryable JSON file. When you're writing SuiteScript and can't remember if a field supports nlapiSubmitField or whether a record even allows server-side updates, this answers it without opening five browser tabs. Oracle NetSuite authored it, so the data matches what their APIs actually expect. The scripting level table alone saves you from a lot of trial and error deploys.
npx skills add https://github.com/oracle/netsuite-suitecloud-sdk --skill netsuite-suitescript-records-reference