How to estimate the gas price

Prerequisites

Before getting started, make sure you have the following ready:

• Node v.14+ or Python
• NPM/Yarn or Pip

Step 1: Setup Moralis

First register your Moralis account and get your Moralis API Key.

Once you have your Moralis API Key, install the Moralis SDK in your project.

npm

npm install moralis

yarn

yarn add moralis

pnpm

pnpm add moralis

pip

pip install moralis

Step 2: Estimate gas price

In order to estimate the gas price, Moralis provides you a estimateGasPrice endpoint to do so.

Here you'll need one parameter: network.

Once you have obtained the network, you can copy the following code:

index.js (JavaScript)

const Moralis = require("moralis").default;

const runApp = async () => {
  await Moralis.start({
    apiKey: "YOUR_API_KEY",
    // ...and any other configuration
  });

  const network = "mainnet";

  const response = await Moralis.AptosApi.transactions.estimateGasPrice({
    network,
  });

  console.log(response);
};

runApp();

index.ts (TypeScript)

import Moralis from "moralis";

const runApp = async () => {
  await Moralis.start({
    apiKey: "YOUR_API_KEY",
    // ...and any other configuration
  });

  const network = "mainnet";
  
  const response = await Moralis.AptosApi.transactions.estimateGasPrice({
    network,
  });

  console.log(response);
};

runApp();

index.py (Python)

from moralis import aptos_api

api_key = "YOUR_API_KEY"

params = {
    "network": "mainnet",
}

result = aptos_api.transactions.estimate-gas-price(
    api_key=api_key,
    params=params,
)

print(result)

Step 3: Run the script

To run the script, enter the following command:

Shell (JavaScript)

node index.js

Shell (TypeScript)

ts-node index.ts

Shell (Python)

python index.py

In your terminal, you should see the following JSON response:

{
  "deprioritized_gas_estimate": 100,
  "gas_estimate": 100,
  "prioritized_gas_estimate": 150,
  "__headers": {
    "date": "Wed, 12 Apr 2023 15:09:16 GMT",
    "content-type": "application/json",
    "content-length": "84",
    "connection": "close",
    "x-aptos-chain-id": "1",
    "x-aptos-ledger-version": "119821921",
    "x-aptos-ledger-oldest-version": "0",
    "x-aptos-ledger-timestampusec": "1681312155079381",
    "x-aptos-epoch": "2186",
    "x-aptos-block-height": "46554718",
    "x-aptos-oldest-block-height": "0"
  }
}

Congratulations 🥳 You just estimate the gas price with just a few lines of code using the Moralis Transaction API!

Youtube Video

API Reference

If you want to know more details on the endpoint and optional parameters, check out:

• estimateGasPrice

Support

If you face any trouble following the tutorial, feel free to reach out to our community engineers in our Discord or Forum to get 24/7 developer support.