Professor kevin

The more I study DeFi, the more I feel that its biggest unfinished problem is not liquidity, speed, or even scalability. Those are important, but they are not the deepest issue anymore. The deeper issue is authorization.
For years, DeFi has been built around execution. We built automated market makers, lending markets, staking systems, vaults, bridges, derivatives, and increasingly complex onchain strategies. The industry became very good at making assets move. But it has been much slower at answering a more basic question: who should be allowed to move those assets, under what conditions, and for how long?
That question sounds simple, but in practice it sits at the center of almost every major DeFi risk. Most users still interact with protocols through approvals, signatures, and wallet popups they barely understand. A user wants to swap a token, deposit into a vault, or interact with a lending market, and suddenly they are asked to approve a contract. Sometimes that approval is limited. Sometimes it is effectively unlimited. Sometimes the user understands the difference. Most of the time, they do not.
Thi is where I believe DeFi is entering a new phase. The next generation of DeFi will not be defined only by better financial products. It will be defined by better permission systems.
The early ERC-20 approval model made sense for a simpler era. A token holder approved a spender, and the spender could move tokens within that allowance. It was practical, but blunt. It treated authorization like a switch: either permission exists or it does not. But modern DeFi is not that simple. A user may want to allow one protocol to rebalance a position, another to execute a limit order, a wallet module to pay gas, an agent to manage liquidity, and a treasury system to approve payments. Each of these actions carries a different level of risk. Yet too often, they are still squeezed into the same basic approval pattern.
In my view, this mismatch is one of the reasons authorization layers are becoming essential. DeFi cannot keep relying on users to manually inspect every transaction and understand every contract interaction. That expectation is unrealistic. Even experienced users make mistakes. Even researchers miss edge cases. And as smart accounts, cross-chain systems, and automated agents become more common, the number of possible actions will only increase.
A strong authorization layer changes the model. Instead of asking, “Did the user approve this contract?” we start asking, “What exactly did the user authorize?” That is a much more powerful question. It allows permissions to become specific. A user might authorize a protocol to spend only one asset, only up to a fixed amount, only before a certain expiry, only for a specific strategy, or only after another condition is met. This is the difference between handing someone your entire wallet and giving them a carefully limited instruction.
I see this as a natural evolution of DeFi from raw programmability toward controlled programmability. In the beginning, the miracle of DeFi was that anyone could interact directly with open financial contracts. But openness alone is not enough. As the system grows, users need boundaries. Institutions need policies. DAOs need role-based control. Agents need constrained authority. Wallets need recovery and spending rules. Protocols need safer delegation patterns. Without these layers, DeFi becomes powerful but fragile.
Smart accounts make this shift especially important. Once wallets become programmable, authorization can move beyond simple private-key control. A wallet can enforce spending limits, session keys, multisig rules, recovery processes, gas sponsorship, batched transactions, and app-specific permissions. That is a major improvement, but it also creates a new responsibility. If a wallet can behave like a programmable account, then its permission logic becomes part of the user’s security perimeter. A bad authorization design can be just as dangerous as a bad smart contract.
This is why I do not think of authorization as a user-interface feature. It is infrastructure. It belongs at the same level as custody, execution, and settlement. A clear authorization layer can reduce the damage from phishing, malicious approvals, compromised front ends, and careless integrations. It can also make DeFi more usable because users no longer need to approve every action blindly. They can delegate limited authority while keeping ownership intact.
The rise of onchain agents makes this even more urgent. If autonomous systems are going to trade, rebalance, compound rewards, manage collateral, or execute strategies for users, they cannot operate safely with unlimited control. They need boundaries. An agent should be able to do its job, but only inside a defined permission box. It should not be able to drain unrelated assets, change its own limits, or continue acting forever after the user has forgotten about it. Authorization layers are what make this kind of automation realistic.
The same applies to institutions. A fund, DAO, or company cannot depend on a single signer clicking approve on high-value transactions. They need role separation, approval thresholds, spending policies, audit trails, and emergency controls. Traditional finance has always understood this. No serious financial organization runs entirely on one person’s unrestricted authority. DeFi, if it wants to serve serious capital, must internalize the same lesson without sacrificing openness and self-custody.
Still, authorization layers are not automatically safe. They can introduce complexity, and complexity can hide risk. If permissions are too abstract, users may approve dangerous actions without realizing it. If wallets display permissions poorly, attackers will exploit confusion. If delegation logic is upgradeable or poorly initialized, the authorization layer itself can become the attack vector. So the goal is not merely to add more permission systems. The goal is to make permissions understandable, minimal, enforceable, and revocable.
My observation is that the future of DeFi will belong to protocols and wallets that treat authorization as a design discipline. The best systems will not ask users for broad trust when narrow permission is enough. They will make approvals expire by default. They will show users what an app can actually do, not just that a signature is required. They will separate ownership from operation. They will allow automation without surrendering control.
This is the direction DeFi has to move in. The old model was built around signing transactions. The new model will be built around expressing intent and granting limited authority. That may sound like a small shift, but I think it is one of the most important changes happening in the industry.
DeFi’s promise has always been self-custody and open access. But self-custody does not mean every user must personally approve every tiny action forever. It means users should remain in control of the rules. Authorization layers are how that control becomes practical at scale.
In the next era of DeFi, the most important question will not be whether a transaction can execute. It will be whether it should execute, according to the user’s own boundaries. That is why authorization is no longer optional. It is becoming the trust layer of decentralized finance.
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