Fintech AI agent design · Claude + Vercel

Order anything by voice, and pay with one hold

Click-through of the Solayer AI Pay prototype: choosing coffee, adding items, holding to pay with Face ID and the order confirmation

Solayer Pay made crypto spendable. Solayer AI Pay makes spending effortless: say what you want, the agent finds it nearby, and you pay with Face ID in USDC, gasless. I designed the agent end to end and built it as a working prototype.

Role
Product designer
Platform
iOS · voice + touch
Prototype
Live, built in code
The problem

The card made crypto spendable. Ordering still meant another app.

To buy a coffee with stablecoins, people still had to leave Solayer, order somewhere else, then come back to pay.

1
Spending happened elsewhere

The card worked everywhere, but the ordering lived in other apps.

2
Too many steps

Search, pick, check out, then confirm a payment.

3
Crypto checkout felt risky

Addresses, networks and fees made small purchases stressful.

Reframe

The best checkout is a sentence.

1
Voice first, touch always

Speak, type, or tap a craving. Every path works.

2
Show, then ask

Places and menus come before any money moves.

3
One gesture to pay

Hold for Face ID. No addresses, no gas.

The flow

From craving to paid, in one conversation.

Buying a coffee with stablecoins
Before
Open a delivery appFind the itemCheck outSwitch to the walletConfirm network + feeWait
Two apps, 6 steps
AI Pay
Say itPick a placeAdd to orderHold to pay
One app, 4 steps
Ask and choose

Talk to it like a friend who knows the neighborhood.

The agent listens first, but never traps you in voice: craving chips and a text field are always one tap away.

Order and pay

Money moves last, and only with your face.

Every price is visible before paying. Paying is a single hold: Face ID, USDC, $0.00 network fee.

Decision

A press-and-hold Face ID button instead of a tap, so paying is deliberate but still one gesture.

Trade-off

Holding takes a second longer than a tap, in exchange for no accidental payments from a misheard command.

Outcome

Spending, without the crypto part.

Result
Faster ordering, more card sign-ups

Users felt AI Pay made ordering faster, and the feature raised the Solayer Pay card sign-up rate.

What we heard
Something people use every day

Users said they love using it every day, because the flow is smooth and the experience is fun.

What I learned

Voice needs a visible fallback

Chips and typing made the agent usable anywhere, even with the mic blocked.

Trust is a sequence

Show the place, the menu and the total before asking for a face.

Hide the chain, keep the receipt

No gas or networks on screen, but a transaction link for anyone who wants it.