Wallet API
Get estimated gas (gasLimit)

Get estimated gas (gasLimit)#

[Only supports evm, cosmos] Get the estimated gasLimit based on the transaction information.

Request URL#

POST https://www.okx.com/api/v5/waas/transaction/get-estimate-gas

Request parameters#

ParameterTypeRequiredDescription
chainIdStringYesUnique identifier of the chain
addrFromStringYesFrom address for fee estimation
addrToStringYesTo address for fee estimation
txAmountStringYesAmount for fee estimation
extJsonJson ObjectYesExtended parameters
>inputdataStringNocallData for making contract call

Response parameters#

ParameterTypeDescription
gasLimitStringEstimated gas consumption

Request example#

shell
curl --location --request POST 'https://www.okx.com/api/v5/waas/transaction/get-estimate-gas' \
--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 '{
  "addrFrom": "0x383c8208b4711256753b70729ba0cf0cda55efad",
  "addrTo": "0x4ad041bbc6fa102394773c6d8f6d634320773af4",
  "txAmount": "31600000000000000",
  "chainId": "1",
  "extJson": {
    "inputData": "041bbc6fa102394773c6d8f6d634320773af4"
  }
}'

Response example#

200
{
  "code": 0,
  "msg": "success",
  "data": [{
    "gasLimit": "308781"
  }]
}