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dex.buy

Buys a specific amount of tokens from the Stablecoin DEX orderbook.

Usage

example.ts
import { parseUnits } from 'viem'
import { client } from './viem.config'
 
const { receipt } = await client.dex.buySync({
  amountOut: parseUnits('100', 6),
  maxAmountIn: parseUnits('105', 6),
  tokenIn: '0x20c0000000000000000000000000000000000001',
  tokenOut: '0x20c0000000000000000000000000000000000002',
})
 
console.log('Transaction hash:', receipt.transactionHash)

Asynchronous Usage

The example above uses a *Sync variant of the action, that will wait for the transaction to be included before returning.

If you are optimizing for performance, you should use the non-sync dex.buy action and wait for inclusion manually:

import { parseUnits } from 'viem'
import { client } from './viem.config'
 
const hash = await client.dex.buy({
  amountOut: parseUnits('100', 6),
  maxAmountIn: parseUnits('105', 6),
  tokenIn: '0x20c0000000000000000000000000000000000001',
  tokenOut: '0x20c0000000000000000000000000000000000002',
})
const receipt = await client.waitForTransactionReceipt({ hash })

Return Type

type ReturnType = {
  /** Transaction receipt */
  receipt: TransactionReceipt
}

Parameters

amountOut

  • Type: bigint

Amount of tokenOut to buy.

maxAmountIn

  • Type: bigint

Maximum amount of tokenIn to spend.

tokenIn

  • Type: Address

Address of the token to spend.

tokenOut

  • Type: Address

Address of the token to buy.

account (optional)

  • Type: Account | Address

Account that will be used to send the transaction.

feeToken (optional)

  • Type: Address | bigint

Fee token for the transaction.

Can be a TIP-20 token address or ID.

feePayer (optional)

  • Type: Account | true

Fee payer for the transaction.

Can be a Viem Account, or true if a Fee Payer Service will be used.

gas (optional)

  • Type: bigint

Gas limit for the transaction.

maxFeePerGas (optional)

  • Type: bigint

Max fee per gas for the transaction.

maxPriorityFeePerGas (optional)

  • Type: bigint

Max priority fee per gas for the transaction.

nonce (optional)

  • Type: number

Nonce for the transaction.

nonceKey (optional)

  • Type: 'random' | bigint

Nonce key for the transaction. Use 'random' to generate a random nonce key.

validBefore (optional)

  • Type: number

Unix timestamp before which the transaction must be included.

validAfter (optional)

  • Type: number

Unix timestamp after which the transaction can be included.

throwOnReceiptRevert (optional)

  • Type: boolean
  • Default: true

Whether to throw an error if the transaction receipt indicates a revert. Only applicable to *Sync actions.