user130860: I want to be able to test bitcoin without waiting literal days, is it possible to run a local node that doesnt require sync?

user47827: Yes you can use regtest e.g. bitcoind -regtest which is a local node without any prior block history.
But even with mainnet, testnet, signet nodes you can still run most bitcoin-cli commands during IBD (initial block download). You can't use some Core wallet functionality (e.g. spending) until IBD has completed as the wallet needs to know how much Bitcoin it has etc.

130860: <p>I want to be able to test bitcoin without waiting literal days, is it possible to run a local node that doesnt require sync?</p>
 47827: <p>Yes you can use regtest e.g. <code>bitcoind -regtest</code> which is a local node without any prior block history.</p>
<p>But even with mainnet, testnet, signet nodes you can still run most bitcoin-cli commands during IBD (initial block download). You can't use some Core wallet functionality (e.g. spending) until IBD has completed as the wallet needs to know how much Bitcoin it has etc.</p>
