Offers insights into a PSBT's contents, including inputs, outputs, and signatures, detailing the transaction's current state and what is needed to complete it.

How is this used?

Think of a PSBT like a mystery box that contains all the pieces needed to complete a transaction, but you're not exactly sure what's inside or if anything is missing. The 'decodepsbt' command is like having x-ray vision, allowing you to see inside the box without opening it. It shows you everything about the transaction in a way that's easy to understand: who needs to sign it, how much Bitcoin is being sent, where it's going, and if there are any parts still needed before the transaction can be fully completed and sent through the Bitcoin network.