# USDFI - Decentralized Stablecoin & DeFi Banking Protocol > USDFI is a decentralized multichain stablecoin protocol with lending, liquidity pools, swaps and yield aggregation in one universal banking layer. Smart contracts are audited by ChainSecurity, SolidProof and CertiK. ## App - [Home](https://usdfi.com/): Protocol overview and entry point - [Pools](https://usdfi.com/pools): Provide liquidity and earn yield - [Money Legos](https://usdfi.com/money-legosV2): Composable DeFi yield strategies - [Vote](https://usdfi.com/vote): Governance, emissions voting, bribes and fees - [Swap](https://usdfi.com/swap): Cross-chain crypto swaps - [Bridge](https://usdfi.com/bridge): Cross-chain asset transfers ## Docs - [Documentation](https://docs.usdfi.com/): Working paper, contracts and security audits - [Full version](https://usdfi.com/llms-full.txt) ## Ecosystem - [Lending](https://lending.usdfi.com/): USDFI lending market - [Perpetuals](https://perpetuals.usdfi.com/): USDFI perpetuals trading