Case Study: Exa App achieves gasless, seed-phrase-free DeFi banking with Alchemy Smart Wallets

Exa App cuts gas fees 20x and processes $1M onchain with Alchemy

Exa App, an onchain banking application, faced the challenge of making decentralized finance (DeFi) accessible by eliminating the complexity of seed phrases, manual transaction signing, and prohibitive gas fees that deterred mainstream users. To build a secure, self-custodial app with a seamless user experience, they partnered with vendor Alchemy and utilized their smart wallets.

Alchemy's solution enabled Exa App to implement smart wallets with a custom ERC-6900 module. This eliminated seed phrases by using passkeys for biometric authentication and slashed the gas fees Exa App sponsored by 20x. The results were significant, with the platform processing over $1 million onchain across 1,300 credit cards, providing a secure and user-friendly blueprint for the future of onchain DeFi apps.

Exa App