Pay mode is optimized for payment use cases such as cross-chain swaps, stablecoin trades, NFT & ecommerce purchases, and general transactions. It enables users to pay using any token from any supported chain, and is ideal when you know the exact amount the recipient should receive. At a glance: Pay fixes the destination amount (exact-output). You set toAmount; the widget figures out what the user spends.

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Trade Type: Output

Pay mode lets you specify an exact_output trade, meaning:
  • You specify the exact amount the recipient will receive (toAmount)
  • The user pays whatever amount is needed from their available tokens
  • Perfect for fixed-price purchases (NFTs, swaps, functions with specific token amounts)
This is also ideal when you want to execute functions on the destination side that have dynamic calldata

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Basic Example

import { TrailsWidget } from '0xtrails/widget'

export function PayExample() {
  return (
    <TrailsWidget
      mode="pay"
      toAddress="0x1234567890123456789012345678901234567890"
      toAmount="10" 
      toChainId={8453}
      toToken="USDC"
      renderInline
    />
  )
}

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Advanced Examples

For detailed implementation examples including NFT purchases, complex payment flows, see our Pay Examples page.