One Transaction to Rule Them All: Biconomy's ERC-8211 Lets AI Agents Finally Do DeFi Without the Infinite Approve Button

Biconomy just dropped ERC-8211, a new Ethereum standard that lets AI agents and apps execute complex DeFi trades in a single step instead of signing away their digital soul multiple times. Finally, a solution for degens who got carpal tunnel from clicking "approve" 47 times just to move some tokens around.

The system, dubbed "smart batching," bundles several blockchain operations together while resolving transaction values in real time. It's targeting a classic DeFi headache: many transactions depend on outputs that can't be known in advance. Think of it like trying to order lunch while your stomach is still digesting breakfast—you just don't know how much space you've got until you're in the moment.

"When you have an output from something like a swap, you don't know how much that will be," Biconomy co-founder Ahmed Al-Balaghi told Decrypt. "Developers have to either hard code that or find another way for that output to be used as an input for something else, like a deposit." It's the blockchain equivalent of trying to pack for a trip when you haven't finished laundry yet.

Currently, Ethereum batch systems lock transaction parameters before execution starts. ERC-8211 flips that by letting each step reference the previous one's result dynamically, rather than relying on fixed numbers locked at signing time. Old batch transactions were like writing a check—you're locked in before you know what actually happened. ERC-8211 is more like Venmo'ing yourself after you see your bank balance.

It's worth noting ERC-8211 isn't an Ethereum Improvement Proposal—it's an ERC that developers can implement directly without touching the core protocol. "EIPs are still somewhat harder on Ethereum, just because that does needs more stakeholders," Al-Balaghi explained. "That's why ERCs exist, because they don't need a protocol change." Basically, it's the difference between changing the constitution and just decorating your house.

With smart batching, each step resolves its value at execution time and must meet predefined conditions before continuing. An AI agent could withdraw from a lending protocol, swap the exact amount received, and deposit into another protocol all in one signed transaction. There are also controls to restrict what agents can do. One transaction to rule them all, one transaction to find them, one transaction to bring them all and in the darkness bind them.

"What we've built lets developers just say: Whatever the balance is of the user, just compose that with the next action. And it's done," Al-Balaghi added. "That means you can create these really powerful flows without writing new smart contracts. You can just do it in TypeScript." It's like Lego for DeFi, but instead of plastic bricks, you're snapping together financial transactions.

Barnabé Monnot, a research scientist at the Ethereum Foundation, said the proposal fits the organization's strategic focus on improving UX. "The protocol cluster of the Ethereum Foundation has 'Improve UX' as one of its strategic priorities," he told Decrypt. "ERC-8211 support is coming from this strategic priority." Finally, someone at the Foundation noticed that clicking "confirm" fifty times isn't exactly a frictionless experience.

Monnot noted the collaboration began during a 2025 workshop organized under the Foundation's Improve UX initiative. "The agentic execution angle is new, but has imposed itself given the rapid developments of agents over the last three months. It's a perfect use case since agents can orchestrate complex cross-chain interactions, and ERC-8211 gives them the right platform to do it." The AI agent renaissance arrived faster than anyone expected, like a酒店 breakfast buffet—suddenly everyone's scrambling to keep up.

The Ethereum Foundation recognized it hadn't explored this area and couldn't tackle every challenge alone—hence the partnership with Biconomy. Sometimes you just need to bring in the experts instead of pretending you can do everything yourself. Even the Foundation has FOMO.

"I think the Ethereum Foundation, and this is from what I've seen personally by working with them—they're way more willing to win," Al-Balaghi said. "Seeing that level of interactivity, that more competitive nature, wanting things to get done quicker, and being willing to work with the ecosystem is very promising compared to what it was just two years ago." The vibes have shifted. The Foundation is in growth mode.

Meanwhile, Vitalik Buterin recently detailed his personal AI setup in a blog post, describing it as both "private" and "secure." The Ethereum co-founder said he runs his AI entirely on local hardware and has built custom tools around the LLM to prevent his AI agents from sending messages or moving crypto without human sign-off. "The new two-factor authentication is the human and the LLM," he wrote. Basically, Vitalik built a chaperone for his AI. Smart man.

On the AI wallet front, MoonPay launched an open-source wallet standard designed for AI agents to manage funds across multiple blockchains. The Open Wallet Standard (OWS), announced Monday, was developed with contributions from PayPal, the Ethereum Foundation, the Solana Foundation, Ripple, OKX, Tron, TON Foundation, and Base, among others. Everyone and their mother is getting into the AI wallet space. It's like 2021 DeFi summer, but instead of yield farming, everyone's farming for agentic infrastructure.