Base

🔊 Base Builder Quest 5 🔊

when you combine Sub Accounts with Spend Limits, you create a powerful new onchain user experience — users can execute transactions without ever seeing a popup.

prompt: implement Smart Wallet Sub Accounts* and Spend Limits, in a new or existing app, to enable transaction execution without user authentication.

(* Sub Accounts are currently only available on Base Sepolia Testnet)

there’s 2 ETH in prizes: 1 ETH for the winner and 1 ETH split by up to 4 finalists.

for new apps, your submission must include a GitHub with the first commit after this announcement post. if submitting an existing app, please include the link to the first commit with the new functionality.

to submit your app, reply to this post by 1pm ET on May 8 (tomorrow!) with your project's GitHub link AND the live URL where we can test transactions without popups.

Base Builder Quest 5 is wrapped.

We asked builders to enable a seamless onchain user experience with Smart Wallet Sub Accounts and Spend Limits; Pop-ups were the enemy.

In <24 hours we had 14 apps that all had smooth user experiences.

However only 1 can win, with 4 finalists:

Winner // 1 ETH: DukeOphir with BasedPixels

Paint on a 10x10 NFT canvas where each stroke is a transaction behind the scenes.

🔊 Base Builder Quest 5 🔊

when you combine Sub Accounts with Spend Limits, you create a powerful new onchain user experience — users can execute transactions without ever seeing a popup.

prompt: implement Smart Wallet Sub Accounts* and Spend Limits, in a new or existing app,

@neodaoist My BBQ5 submission: BasedPixels 🔵

🎨 Mint 10x10 pixel canvas NFT
🧑‍🎨 Toggle Base logos on/off with seamless transactions
⚡️ No wallet popups using Smart Wallet Sub Accounts
⛓️ Fully onchain SVG with dynamic metadata

Mint, paint, repeat. No friction, all onchain. So based.

App: https://t.co/Es4OteElQO

DukeOphir

Finalist // 0.25 ETH: papajams with Imperfect Form

Onchain fitness challenges that can check your form in real-time, with leaderboards and sharing to compare with friends.

Finalist // 0.25 ETH: OppaiCyber with Tip ur Neighbor

Find your Farcaster ID neighbor and tip them, all without a pop-up getting in your way.

Finalist // 0.25 ETH: Mindtoasted0x with Artips

View the most valuable coin creators on @zora and tip them in one click.

Finalist // 0.25 ETH: uratmangun with a pop-up free coin buying experience

Create coins, buy coins, and top up your ETH balance to keep coining; All without pop-ups!

Keep building. Stay based.

More quests soon.

Awesome submissions. If you have pop ups in your app when users transact, this is your sign to fix it with sub accounts