Gas Estimator Platform API

A Real-time ETH & BSC Gas Estimator for trading bots and DApps. Predict precise gas prices for the next block. The no-brainer necessity for seamless on-chain performance.

Overview

Gas Estimator Platform provides access to:

• Get X% probability for next-block inclusion and choose your ideal balance between confirmation and gas savings. Unlock the power of precise gas predictions! With our Gas Price Predictor, you can choose 99% probability for quick confirmation or 70% probability to save gas over multiple blocks. Take control of your transactions now!

Authentication

A valid Mempool Node API Key is required in the Authorization Header of every request.

Create an account and retrieve your API Key here

API

To interact with our Gas Estimation Platform via API, you must utilise our API Endpoints:

ethGasEstimator

GET https://gasapi.mempoolnode.com/ethGasEstimator

Returns a range of confidence intervals for gas prices needed to qualify a transaction for inclusion in the next block. Order of confidence intervals is subject to change.

Headers

Name	Type	Description
apiKey*	String

200: OK Success

401: Unauthorized Invalid or non-existent API Key

429: Too Many Requests Rate limit exceeded

Example Ethereum Gas Prediction request

curl -X GET 'https://gasapi.mempoolnode.com/ethGasEstimator' -H 'Authorization: Bearer <your-api-key-here>'

Example Ethereum Gas Prediction response payload

{
  "unit": "gwei",
  "last_blocknumber": 17762404,
  "last_blocknumber_time": 1690194947,
  "pending_blocknumber": 17762405,
  "baseFeePerGas": 27557585893,
  "expected_gasprice": [
    {
      "block": "pending",
      "gasPrice": [
        {
          "percent": 70,
          "priorityFeePerGas": 513031648,
          "maxFeePerGas": 28070617541
        },
        {
          "percent": 80,
          "priorityFeePerGas": 732904128,
          "maxFeePerGas": 28290490021
        },
        {
          "percent": 90,
          "priorityFeePerGas": 795091584,
          "maxFeePerGas": 28352677477
        },
        {
          "percent": 95,
          "priorityFeePerGas": 1116344576,
          "maxFeePerGas": 28673930469
        },
        {
          "percent": 99,
          "priorityFeePerGas": 2454116864,
          "maxFeePerGas": 30011702757
        }
      ]
    },
    {
      "block": "pending+1",
      "gasPrice": [
        {
          "percent": 70,
          "priorityFeePerGas": 576127232,
          "maxFeePerGas": 28133713125
        },
        {
          "percent": 80,
          "priorityFeePerGas": 608016704,
          "maxFeePerGas": 28165602597
        },
        {
          "percent": 90,
          "priorityFeePerGas": 870244224,
          "maxFeePerGas": 28427830117
        },
        {
          "percent": 95,
          "priorityFeePerGas": 1013630464,
          "maxFeePerGas": 28571216357
        },
        {
          "percent": 99,
          "priorityFeePerGas": 2250716416,
          "maxFeePerGas": 29808302309
        }
      ]
    },
    {
      "block": "pending+2",
      "gasPrice": [
        {
          "percent": 70,
          "priorityFeePerGas": 507536544,
          "maxFeePerGas": 28065122437
        },
        {
          "percent": 80,
          "priorityFeePerGas": 619043264,
          "maxFeePerGas": 28176629157
        },
        {
          "percent": 90,
          "priorityFeePerGas": 824116608,
          "maxFeePerGas": 28381702501
        },
        {
          "percent": 95,
          "priorityFeePerGas": 1008242304,
          "maxFeePerGas": 28565828197
        },
        {
          "percent": 99,
          "priorityFeePerGas": 2249058816,
          "maxFeePerGas": 29806644709
        }
      ]
    },
    {
      "block": "pending+3",
      "gasPrice": [
        {
          "percent": 70,
          "priorityFeePerGas": 485718144,
          "maxFeePerGas": 28043304037
        },
        {
          "percent": 80,
          "priorityFeePerGas": 561420736,
          "maxFeePerGas": 28119006629
        },
        {
          "percent": 90,
          "priorityFeePerGas": 772132480,
          "maxFeePerGas": 28329718373
        },
        {
          "percent": 95,
          "priorityFeePerGas": 947171264,
          "maxFeePerGas": 28504757157
        },
        {
          "percent": 99,
          "priorityFeePerGas": 2189099776,
          "maxFeePerGas": 29746685669
        }
      ]
    },
    {
      "block": "pending+4",
      "gasPrice": [
        {
          "percent": 70,
          "priorityFeePerGas": 485143936,
          "maxFeePerGas": 28042729829
        },
        {
          "percent": 80,
          "priorityFeePerGas": 572721728,
          "maxFeePerGas": 28130307621
        },
        {
          "percent": 90,
          "priorityFeePerGas": 776616960,
          "maxFeePerGas": 28334202853
        },
        {
          "percent": 95,
          "priorityFeePerGas": 952743488,
          "maxFeePerGas": 28510329381
        },
        {
          "percent": 99,
          "priorityFeePerGas": 2187988992,
          "maxFeePerGas": 29745574885
        }
      ]
    }
  ]
}

Key Description of Terms

baseFeePerGas

Base fee per gas in gwei

last_blocknumber

Last block number at the time of prediction

last_blocknumber_time

Last Block creation timestamp

pending_blocknumber

Current pending block number at the time of prediction

expected_gasprice

An array of all prediction levels for future and currently pending blocks

block

The block order state "pending + n", for example "pending" refers to the current pending block, "pending + 1" refers to the pending block after the current pending block, and so on

gasPrice

An array of all gas price predictions in order of probability levels

percent

The probability percentage level

priorityFeePerGas

Predicted priority fee per gas in gwei also known as the "tip"

maxFeePerGas

Max fee per gas in gwei