Is Kaspa's new Toccata minimum fee a consensus rule or a node policy?

The Toccata minimum fee is a node policy and mempool rule, not a consensus rule — which means zero-fee transactions remain valid at the consensus layer. In Kaspa, consensus rules are the absolute laws every node must agree on to maintain a shared view of the blockchain. A mempool rule, by contrast, is a local filter: individual nodes will refuse to relay or include transactions that fall below the fee floor, but those transactions are not fundamentally illegal on the protocol itself. For most users this distinction is invisible because wallets handle fees automatically. For developers building transaction software directly, it matters: your transactions won't be rejected as invalid by the protocol, but they will be filtered out by every node running the standard policy until you update your fee logic.