Permissionless
Last updated 17 October 2026Last verified 17 October 2026
What does permissionless mean in DeFi?
Open to any participant without requiring approval. The defining property of public DeFi: anyone can deploy a contract, add liquidity, or borrow. This also means anyone can deploy malicious code, create fraudulent tokens, or drain a protocol with no prior relationship required. Permissionlessness is not a neutral property: it shapes the risk profile of everything built on top of it.
TradFi equivalentThe inverse of a membership exchange or a correspondent relationship, where access itself is the control. Here there is no approval, no account opening and no eligibility test, which also means no counterparty has been screened before the first trade.