Pimlico

Pimlico is an infrastructure platform and gas sponsorship engine for building onchain applications using Ethereum smart accounts. It provides ERC-4337 account abstraction services including bundlers, paymasters, and developer tooling via its permissionless.js SDK. With Pimlico, developers can sponsor gas fees for their users, accept ERC-20 tokens as gas payment, and set flexible sponsorship policies across 100+ EVM-compatible chains. The platform has processed over 250 million transactions and sponsored over 100 million, and integrates with every major smart account standard including Safe, Kernel, MetaMask Smart Accounts, and Coinbase Wallet. Pimlico co-authored the ERC-4337, ERC-7677, and ERC-7679 standards and is SOC 2 Type I certified. Its open-source bundler Alto powers the transaction infrastructure.