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Biconomy Proposes ERC-8211 to Let AI Agents Batch DeFi in One Transaction

The contract-layer standard resolves parameters at runtime to let AI agents run guarded multi-step DeFi flows.

Overview

  • Biconomy introduced ERC-8211, called smart batching, to let AI agents and smart wallets run complex DeFi actions in a single atomic call.
  • The standard sets each input at execution time so later steps can use the real output from earlier calls instead of guessed numbers.
  • Built-in predicates, including assertion-only checks, act as gates that halt the entire batch if a balance or condition is not met.
  • It ships as a contract-layer encoding that works with today’s account-abstraction tools and can be built into TypeScript clients without a fork.
  • Ethereum Foundation researcher Barnabé Monnot said the work fits the group’s Improve UX priority after a 2025 workshop with Biconomy.