> ## Documentation Index
> Fetch the complete documentation index at: https://documentation.suby.fi/llms.txt
> Use this file to discover all available pages before exploring further.

# Stablecoin & Crypto Payments

Crypto payments on Suby settle instantly, wallet-to-wallet. No holding period, no manual reconciliation, no delayed payouts.

## Paying at Checkout

Users can pay in two ways at checkout.

<CardGroup cols={2}>
  <Card title="Sign & Pay" icon="wallet">
    The user connects their wallet, reviews the payment amount, and signs the transaction directly on-chain. This includes MetaMask, Phantom, Rabby, Coinbase Wallet, Binance Wallet, and any other non-custodial wallet.
  </Card>

  <Card title="Deposit" icon="qrcode">
    A QR code and deposit address are displayed at checkout. The user sends funds from any wallet or centralized exchange, no wallet connection required.
  </Card>
</CardGroup>

<Note>
  The deposit address shown at checkout is not your wallet. Suby creates a dedicated smart account per customer to receive and track funds accurately.
</Note>

## Settlement

Both payment methods route through the same smart contract logic.

<Steps>
  <Step title="Funds received">
    The smart contract receives the payment from the user.
  </Step>

  <Step title="Fee deducted">
    Suby's 1.5% fee is routed to Suby's fee wallet automatically.
  </Step>

  <Step title="Instant payout">
    The remainder is sent to your configured wallet, instantly, on every transaction.
  </Step>
</Steps>

<Note>
  There is no holding period, no aggregation across transactions, and no manual action required on your end.
</Note>

## Pricing & Conversion

All product prices are defined in USD. At checkout, Suby calculates the equivalent token amount in real time.

<Card title="Pyth Price Feeds" icon="chart-line" href="https://insights.pyth.network/price-feeds">
  Token conversion rates are powered by Pyth, providing accurate, real-time pricing across all supported assets. The rate is locked at the moment the user initiates payment.
</Card>

<Warning>
  Suby does not use on-chain swaps or variable pricing mechanisms. The amount shown at checkout is the exact amount the user pays.
</Warning>

## Supported Networks & Tokens

Enable or disable tokens individually from **Settings → Payment Methods**.

| Network   | Supported Tokens |
| --------- | ---------------- |
| Base      | USDC, ETH        |
| Ethereum  | USDC, USDT, ETH  |
| Arbitrum  | USDC, ETH        |
| BNB Chain | USDC, USDT, BNB  |
| Solana    | USDC, USDT, SOL  |
| Polygon   | USDC, USDT0, POL |
| Monad     | USDC, USDT0, MON |

<Note>
  Payouts for fiat payments are settled in USDC on Base, Polygon, Solana, or Arbitrum, depending on your configured payout network in **Settings → Payouts**.
</Note>

## Verified Smart Contracts

All Suby contracts are publicly deployed and verified on their respective block explorers. Source code is fully auditable, no hidden logic, no upgrade backdoors.

<CardGroup cols={2}>
  <Card title="Base" icon="link" href="https://basescan.org/address/0x8b8f73282c06f1c170101f228618b76eefd02550">
    0x8b8f...2550
  </Card>

  <Card title="Ethereum" icon="link" href="https://etherscan.io/address/0xb331dc9b1b140c4af40ae8abe4e1d8a1529e5bbe">
    0xb331...5bbe
  </Card>

  <Card title="BNB Chain" icon="link" href="https://bscscan.com/address/0x6cf4f2d9a328180fccc312c6c75fe9e0cea4d631">
    0x6cf4...4e1d
  </Card>

  <Card title="Arbitrum" icon="link" href="https://arbiscan.io/address/0x997cd72dc8b25a5cdc1dbe34fa3fa0f1600124e1">
    0x997c...24e1
  </Card>
</CardGroup>

<CardGroup cols={2}>
  <Card title="Monad" icon="link" href="https://monadscan.com/address/0x272a3f2C6e60ca6AB7d543cc2820a7353C167772">
    0x8b8f...2550
  </Card>

  <Card title="Polygon" icon="link" href="https://polygonscan.com/address/0x272a3f2C6e60ca6AB7d543cc2820a7353C167772">
    0xb331...5bbe
  </Card>
</CardGroup>