Overview
A bundler is an infrastructure actor that collects user operations and submits them to the entry point in ERC-4337. It bundles multiple operations into one transaction to save gas. Bundlers are the validators of account abstraction.
How It Works
Bundlers gather user operations from a mempool, validate them, and submit them in a bundle to the entry point contract. They are incentivized by fees or subsidies. They play a role similar to miners or validators.
Why It Matters
Bundlers make account abstraction operational, enabling smart accounts at scale. They introduce a new infrastructure layer and potential MEV dynamics. They are essential to the ERC-4337 ecosystem.
Related Concepts
Bundlers relate to User Operations, Paymasters, and the Entry Point in ERC-4337. They are part of Account Abstraction infrastructure.