ERC‑8211 smart batching

A new Ethereum request for comment called ERC‑8211 would let a wallet or software agent bundle a multi-step trade into one transaction instead of several separate clicks. (thedefiant.io) The proposal was published on April 6, 2026, and Biconomy said on April 7 that it was co-developed with the Ethereum Foundation under the foundation’s “Improve UX” work on user experience. The public discussion thread for “ERC‑8211: Smart Batching” appeared in the Fellowship of Ethereum Magicians forum on April 7. (thedefiant.io) (ethereum-magicians.org) Decentralized finance often requires chained actions such as swapping one token, depositing the output into a lending market, and then staking the receipt token. In today’s batch systems, many of those numbers must be fixed before the transaction is signed, even though swap output, bridge fees, and vault ratios can change by the block. (decrypt.co) (thedefiant.io) ERC‑8211 is meant to solve that by letting later steps use values discovered during execution, not values guessed in advance. Biconomy co-founder Ahmed Al-Balaghi told Decrypt that developers otherwise have to hard-code an amount or find another workaround when one step’s output becomes the next step’s input. (decrypt.co) The proposal describes three parts for that flow: “fetchers” that read live on-chain state, “constraints” that check whether the resolved values are still acceptable, and “predicate entries” that test whether a condition has been met before the next call runs. Those checks are meant to keep a bundled transaction from continuing if market conditions move outside the user’s limits. (thedefiant.io) That design matters for software agents because automated strategies break when every parameter has to be known before execution starts. Biconomy’s example was a trade that swaps Ether for USD Coin and then deposits the proceeds into Aave, where estimating too high can revert the batch and estimating too low can leave funds unused. (thedefiant.io) ERC‑8211 is not a change to Ethereum’s base protocol. Ethereum’s standards process says Ethereum requests for comment cover application-level standards and contract conventions, while protocol changes follow the broader Ethereum improvement proposal track with later stages such as Draft, Review, Last Call, and Final. (eips.ethereum.org) (decrypt.co) Biconomy and its collaborators are pitching the format as account-agnostic, meaning it is supposed to work across existing smart-account setups rather than requiring a new wallet architecture. The Defiant reported that the authors say it is compatible with ERC‑7683, ERC‑4337, and related interoperability work already backed by the Ethereum Foundation’s user-experience track. (thedefiant.io) The proposal is still early. The Ethereum Improvement Proposals site says an idea is only formally tracked after it is merged into the EIP repository as a Draft, and the public Magicians listing shows ERC‑8211 as a fresh forum topic with limited discussion so far. (eips.ethereum.org) (ethereum-magicians.org) For now, ERC‑8211 is best understood as an execution format for wallets and agents, not a rule change for Ethereum itself. If developers adopt it, the pitch is simple: fewer separate signatures for users, and fewer broken handoffs between one DeFi step and the next. (decrypt.co) (thedefiant.io)