Payment Flow

How payments work on xpay✦ Hub.

Overview

xpay✦ Hub uses USDC on Base network for instant micropayments.


Deposit → Lock → Execute → Settle

Currency & Network

USDC

Type: Stablecoin (1 USDC = $1 USD)
Contract: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 (Base)
Decimals: 6

Base Network

Type: Layer 2 (Coinbase)
Chain ID: 8453 (mainnet), 84532 (testnet)
Speed: ~2 second finality
Cost: Very low gas fees

Payment Steps

1. Deposit

Users add USDC to their xpay✦ wallet:

Send USDC on Base to wallet address
Transaction confirms (~2 seconds)
Balance updates automatically

2. Lock

When running an RDA:

Click “Run”
Cost is locked from available balance
Locked funds reserved for this run

3. Execute

The RDA runs:

Inputs processed
Execution happens
Output generated

4. Settle

After execution:

On Success:

Locked funds deducted
Creator receives payment
User sees result

On Failure:

Locked funds released
Balance restored
User not charged

Non-Custodial Design

xpay✦ never holds your funds:

Your keys - Controlled via Privy
Your wallet - On Base network
Direct settlement - Creator paid directly

Spending Controls

Global Allowance

Set maximum spending:


{
  allowance: 10.00, // Max $10 per session
  refreshOnLogin: true
}

Per-Transaction Limit

Limit individual runs:


{
  maxPerTransaction: 1.00 // Max $1 per run
}

API Integration

Check Balance


GET /wallet/balance


{
  "balance": 100.50,
  "availableBalance": 95.00,
  "totalLocked": 5.50
}

Record Deposit


POST /wallet/deposit
{
  "amount": 50.00,
  "transactionHash": "0x..."
}

Fee Structure

Platform Fee

~10% of transaction
Covers infrastructure
Instant settlement

Network Fees

Base gas fees (very low)
Paid by platform
No user gas needed

Security

Transaction Safety

Funds locked only for execution
Released on failure
No pre-authorization abuse

Wallet Security

Privy-managed keys
MPC technology
Non-custodial

Troubleshooting

Balance Not Updating

Check transaction on Base explorer
Wait for confirmation
Refresh the page

Transaction Failed

Check sufficient balance
Verify inputs are valid
Try again

Funds Locked

Funds are released:

After successful execution
On execution failure
If timeout occurs

xpay✦ Infrastructure

xpay✦ Hub uses the xpay✦ payment infrastructure:

x402 protocol support
Spending controls
Transaction logging
Instant settlement

Learn more in the xpay✦ documentation.