Starkware Layer2 Offchain-Transactions

I'm searching for a blockchain expert, that knows if it's possible to get L2 Offchain-Transactions through Starkware in the Ethereum Network. And if it's possible, how do i get them in real-time with filtering.

Starkware:
https://docs.starkware.co/starkex-v4/

I'm search for real-time Transactions for the following versions of Starkware:
spot Trading V4
spot Trading V3