Sign Info#
This API can retrieve all information needed to assemble a transaction at once (gas-limit, gas-price, nonce).
Request Path#
POST https://www.okx.com/api/v5/wallet/pre-transaction/sign-info
Request Parameters#
| Parameter | Type | Required | Description |
|---|---|---|---|
| chainIndex | String | Yes | Unique identifier for the chain |
| fromAddr | String | Yes | From address |
| toAddr | String | Yes | To address |
| txAmount | String | No | Native token amount for the transaction, default is 0. Must include this parameter when involving mainnet coin transfer, otherwise it will affect the calculation of gas limit，passed in the smallest unit of the chain native token, such as ETH wei. |
| extJson | Object | Yes | Extension parameters, used to add calldata and other information |
extJson
| Parameter | Type | Required | Description |
|---|---|---|---|
| inputData | String | No | calldata |
| protocol | String | No | Query for specific protocol: 1: BRC-20 2: ARC-20 3: Runes 4: ordi_nft |
Response Parameters#
EVM#
| Parameter | Type | Description |
|---|---|---|
| gasLimit | String | Gas consumption |
| nonce | String | Current Number, This endpoint only returns the on-chain nonce. For example, if the maximum nonce that has successfully been confirmed on-chain for the current address is 10, the result of the request will be 11. If you need the nonce from the memory pool, please refer to Get Nonce. |
| gasPrice | Object | Gas consumption price |
| >normal | String | Medium gas price, in wei |
| >min | String | Low gas price, in wei |
| >max | String | High gas price, in wei |
| >supporteip1559 | Boolean | Whether supports EIP 1559 |
| >eip1559Protocol | Object | EIP 1559 protocol detail |
eip1559 Protocol
| Parameter | Type | Description |
|---|---|---|
| eip1559Protocol | Object | EIP 1559 protocol detail |
| >baseFee | String | Base fee |
| >proposePriorityFee | String | Medium priority fee, in wei |
| >safePriorityFee | String | Low priority fee, in wei |
| >fastPriorityFee | String | High priority fee, in wei |
UTXO#
| Parameter | Type | Description |
|---|---|---|
| normalFeeRate | String | Medium fee rate |
| maxFeeRate | String | High fee rate |
| minFeeRate | Object | Low fee rate |
| inscriptionOutput | String | Inscription output size |
| minOutput | String | Minimum inscription output size, in Satoshi (usually 546 Satoshi) |
| normalCost | String | Single inscription transaction cost, in Satoshi |
| maxCost | String | Maximum single inscription transaction cost, in Satoshi |
| minCost | String | Minimum single inscription transaction cost, in Satoshi |
Request Example#
shell
curl --location --request POST 'https://www.okx.com/api/v5/wallet/pre-transaction/sign-info' \
--header 'Content-Type: application/json' \
--header 'OK-ACCESS-PROJECT: 86af********d1bc' \
--header 'OK-ACCESS-KEY: 37c541a1-****-****-****-10fe7a038418' \
--header 'OK-ACCESS-SIGN: leaV********3uw=' \
--header 'OK-ACCESS-PASSPHRASE: 1****6' \
--header 'OK-ACCESS-TIMESTAMP: 2023-10-18T12:21:41.274Z' \
--data-raw '{
"accountId":"0x04ad62387d1f1c7034087bbe4d16163d06fae42d",
"chainIndex": "1",
"tokenAddress": "0xdf54b6c6195ea4d948d03bfd818d365cf175cfc2"
}'
Response Example#
200
// EVM
{
"code": "0",
"data": [
{ // EVM
"gasLimit" : "21000",
"nonce" : "15",
"gasPrice" : {
"normal" : "21289500000", // Medium gas price
"min" : "15670000000", // Low gas price
"max" : "29149000000", // High gas price
"supportEip1559" : true, // Whether supports 1559
"erc1599Protocol": {
"suggestBaseFee" : "15170000000", // Suggested base fee
"baseFee" : "15170000000", // Base fee
"proposePriorityFee" : "810000000", // Medium priority fee
"safePriorityFee" : "500000000", // Low priority fee
"fastPriorityFee" : "3360000000" // High priority fee
}
}
}
],
"msg": ""
}
// UTXO
{
"code": "0",
"data": [
{
"normalFeeRate": "27",
"maxFeeRate": "35",
"minFeeRate": "22",
"inscriptionOutput": "546",
"minOutput": "1500",
"normalCost": "1800",
"maxCost": "3600",
"minCost": "600"
}
],
"msg": ""
}