Khalkos Smart Wallet

Inspiration

We wanted to make saving effortless for crypto users. A wallet that helps you grow wealth automatically while you spend.

What it does

Khalkos Smart Wallet lets you save a set percentage of every transaction into Trove.fi yield vaults, earning passive income automatically.

How we built it

We developed invisible account creation, using Sign in with Google for easy onboarding. Accounts are deployed via Avnu Gas Paymaster, and private keys are stored securely in the user’s device using secure enclave, no backend needed.

Challenges we ran into

Integrating account deployment with gas paymaster and managing private keys securely without a backend.

Accomplishments that we're proud of

Built a fully client-side, non-custodial wallet that automates saving while maintaining full user ownership.

What we learned

We learned how to combine account abstraction, secure key management, and DeFi automation seamlessly on Starknet.

What's next for Khalkos Smart Wallet

We plan to add multi-vault support and analytics for saving habits

Built With

• cair
• react-native