模拟交易#
在执行交易之前进行模拟,以了解预期结果和潜在风险。 交易模拟API仅向我们的企业客户提供。如果您感兴趣,请联系我们 dexapi@okx.com。
请求地址#
GET /api/v5/dex/pre-transaction/simulate
请求参数#
Parameter | Type | Required | Description |
---|---|---|---|
fromAddress | String | 是 | From 地址。 |
toAddress | String | 是 | To 地址。 |
chainIndex | String | 是 | 链的唯一标识。 如 501 : Solana,更多可查看这里。目前支持 EVM、SOL、SUI 链,更多的链即将被支持。 |
txAmount | String | 否 | 交易金额。默认值:0 。1.对于主链币交易(当fromToken为主链币时,例如 ETH ),txAmount可设置为主链币的数量,或通过 /swap API获取(例如: txAmount = swapResponse.tx.value )。2.对于代币交易,需将 txAmount 设为0。 金额必须使用主链币的基础单位(如ETH对应wei)。 |
extJson | Object | 是 | 扩展参数,用于添加 calldata 等信息 |
> inputData | String | 是 | Call data |
priorityFee | String | 否 | 优先费。只适用于Solana |
gasPrice | String | 否 | Gas price |
响应参数#
Parameter | Type | Description |
---|---|---|
intention | String | 交易目的。 有效值: Swap , Token Approval |
assetChange | Array | 交易导致的资产变化。 |
> assetType | String | 资产类型。 有效值: NATIVE , ERC20 , SPLTOKEN , SUITOKEN |
> name | String | 资产名称(例如, "Ethereum") |
> symbol | String | 资产符号 (例如 "ETH") |
> decimals | Number | 精度 |
> address | String | 合约地址 |
> imageUrl | String | 图片地址 |
> rawValue | String | 资产金额。正数代表资产增加/接收,负数代表资产减少/转出。 |
gasUsed | String | Gas 消耗 |
failReason | String | 失败原因 |
risks | Array | 潜在的风险 |
> address | String | 地址 |
> addressType | String | 地址类型。有效值: contract , eos |
请求示例#
shell
curl --location --request POST 'https://web3.okx.com/api/v5/dex/pre-transaction/simulate' \
--header 'OK-ACCESS-KEY: your-access-key' \
--header 'OK-ACCESS-SIGN: your-access-sign' \
--header 'OK-ACCESS-PASSPHRASE: your-passphrase' \
--header 'OK-ACCESS-TIMESTAMP: 2025-05-19T10:00:00.000Z' \
--header 'Content-Type: application/json' \
--data-raw '{
"fromAddress": "0x742d35Cc6634C0532925a3b844Bc454e4438f44e",
"toAddress": "0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D",
"chainIndex": "1",
"txAmount": "0",
"extJson": {
"inputData": "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"
},
"gasPrice": "12000000000"
}'
响应示例#
200
{
"code": "0",
"data": [
{
"intention": "SWAP",
"assetChange": [
{
"assetType": "NATIVE",
"name": "Ether",
"symbol": "ETH",
"decimals": 18,
"address": "",
"imageUrl": "",
"rawValue": "1000000000000000"
},
{
"assetType": "ERC20",
"name": "USD Coin",
"symbol": "USDC",
"decimals": 6,
"address": "0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48",
"imageUrl": "",
"rawValue": "1000000000000000"
}
],
"gasUsed": "180000",
"failReason": "",
"risks": []
}
],
"msg": "success"
}