Account Abstraction (ERC-4337) — Lesson overview

What you’ll learnHow ERC-4337 smart accounts (account abstraction) work: UserOperations, bundlers, entry points, paymasters, and signature schemes.

Why it mattersAA changes UX (seedless wallets, sponsored gas) and moves risk to new layers (bundlers, paymasters, mempools).

DeliverableFormulas for userOp costs, a minimal AA wallet skeleton, and tests to prove validation and gas payment rules.