Base

🧵 Smart Wallet Sub Accounts: Making @base Simpler

Fakhou | Builder & Educator 🚀


Helping new builders level up on Base.


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1/ @base  is evolving with Smart Wallet Sub Accounts—a new feature designed to make onchain experiences smoother and more user-friendly. 🚀

2/ With Sub Accounts, apps on @base can now enjoy:
✅ Fewer wallet popups
✅ Fine-grained spend limits
✅ A universal account experience

3/ These upgrades are powered by @base’s new accounts framework, which integrates:
🔹 Spend Permissions
🔹 Hierarchical account ownership
🔹 A new ERC standard developed by the Base team

4/ Builders can already integrate Smart Wallet Sub Accounts on @base testnet today. 🌐 And they’re coming to mainnet in Q2!

5/ This journey started 6 months ago when @coinbasedev explored Session Keys—temporary signers with limited permissions. They seemed like the perfect solution for:

Subscription payments
Seamless low-value transactions
 Q2. 🚀

6/ But using Session Keys safely in smart contracts posed challenges. Efficiently inspecting call data while minimizing gas costs was complex.

7/ After months of R&D (and even an external audit),@coinbasedev  pivoted towards Smart Wallet Sub Accounts—a more flexible and secure approach. 💡

8/ Want to dive deeper into how @coinbasedev  got here? Check out full technical blog: https://blog.base.dev/subaccounts 📖

9/ Builders, have begun integrating Smart Wallet Sub Accounts on @base testnet and are ready for mainnet integrating in Q2.