get final changed state of a transacion

Question

I want to call 'eth_call' and get all changed state after this call. How I can do that?

I want to use it as 'stateDiff' for next 'eth_call'.

Answer 1

you can execute an "eth_call" and get all the state changes due to it using the stateDiff option of the trace_call method. You can access this method using Alchemy's trace_call endpoint:

https://docs.alchemy.com/reference/trace-call

Alternatively, you can also get state changes due to an eth_call by using the prestateTracer option of the debug_traceCall method. You can access this method using Alchemy's debug_traceCall endpoint:

https://docs.alchemy.com/reference/debug-tracecall

(Disclosure: I'm with Alchemy)