ESP32 Forum

Is there an API to access the last exception address(es) or backtrace(es)?
This would be incredibly helpful for debugging remote equipment in the field so that after a reset, it could report not just the reason for reset, but the address(es) or backtrace(es) indicating where the exception took place.

You probably want to look at core dumps. Basically, you create a partition for a core dump, and whenever the ESP32 crashes, it writes relevant data there and reboots. After that, you can detect a coredump was created and do whatever with it; for instance, for systems I maintain, it uploads them via http to a server so I can inspect them without needing to physically access the device.