Transaction Notification

Question

is there any tool that sends a notification when a incoming transaction happening on your wallet?

Or what is the best way to check it with a script

Answer 1

You want to poll the list transaction endpoint: https://input-output-hk.github.io/cardano-wallet/api/edge/#operation/listTransactions

Answer 2

Blockfrost.io has an open source project called websocket-link.