eth_gasPrice - BNB Smart Chain

Access the eth_gasPrice method via the JSON-RPC API Interface on BSC to retrieve current gas price estimations for transaction fees.

The RPC method fetches the current gas price in wei for transactions on the BNB Smart Chain, helping users estimate transaction costs.

The eth_gasPrice method in the BSC protocol is a JSON-RPC API call that retrieves the current gas price in wei, which is essential for determining transaction fees. This method is integral to both eth_gasPrice Web3 and eth_gasPrice RPC protocol implementations, providing users with real-time gas price data to optimize transaction costs.

When invoked, eth_gasPrice returns the network's median gas price, enabling developers to set appropriate gas fees for transactions on the BNB Smart Chain. This ensures efficient transaction processing and cost management, making it a critical tool for developers and users navigating the blockchain environment.

Supported Networks

The eth_gasPrice JSON-RPC API method supports the following network types:

• Mainnet

• Testnet

Parameters

None: This method does not require any parameters.

Request Example

API Endpoint

https://go.getblock.io/<ACCESS-TOKEN>/

Request

Here’s a sample cURL request using eth_gasPrice :

curl

curl --location --request POST https://go.getblock.io/<ACCESS-TOKEN>/
--header 'Content-Type: application/json' 
--data-raw {
  "jsonrpc": "2.0",
  "method": "eth_gasPrice",
  "params": [],
  "id": "getblock.io"
}

wss

wscat -c wss://go.getblock.io/{ACCESS_TOKEN}/
{"jsonrpc": "2.0",
"method": "eth_gasPrice",
"params": [],
"id": "getblock.io"}

Response

Below is a sample JSON response returned by eth_gasPrice upon a successful call:

{
  "jsonrpc": "2.0",
  "id": "getblock.io",
  "result": "0x3b9aca00"
}

Body Parameters

Here is the list of body parameters for the eth_gasPrice method:

1. jsonrpc: The version of the JSON-RPC protocol being used. In this case, it is "2.0".

2. id: A unique identifier for the request. Here, it is set to "getblock.io".

3. result: The gas price returned by the Ethereum network, expressed in hexadecimal format. In this example, it is "0x3b9aca00".

Use Cases

Here are some use-cases for eth_gasPrice method:

1. Estimating Transaction Costs: The eth_gasPrice method is commonly used to estimate the cost of a transaction on the Ethereum network. By calling this method, developers can retrieve the current gas price, which helps in calculating the total transaction fee. This is crucial for users who want to ensure they have sufficient funds in their wallets to cover transaction costs.

2. Dynamic Gas Price Adjustment: In Web3 applications, developers can use the eth_gasPrice method to dynamically adjust the gas price for transactions based on network conditions. For example, during periods of high network congestion, the gas price may increase significantly. By continually querying the current gas price, applications can adaptively set higher gas prices to ensure timely transaction processing or lower them during periods of low congestion to save on costs.

3. Optimizing Smart Contract Interactions: When interacting with smart contracts, it is important to optimize the gas usage to make transactions cost-effective. By using eth_gasPrice, developers can analyze and adjust the gas prices for different contract calls, ensuring that interactions are executed efficiently without overpaying for gas. This is particularly useful for applications with frequent on-chain operations, where minimizing gas costs can lead to significant savings over time.

Code for eth_gasPrice

Python

import requests
import json
url = "https://go.getblock.io/<ACCESS-TOKEN>/"
headers = {
    "Content-Type": "application/json"
}
payload = {
  "jsonrpc": "2.0",
  "method": "eth_gasPrice",
  "params": [],
  "id": "getblock.io"
}

response = requests.post(url, headers=headers, data=json.dumps(payload))

# Check the response and print the result
if response.status_code == 200:
    print("Result:", response.json().get("result"))
else:
    print("Error:", response.status_code, response.text)

JavaScript

const axios = require('axios');

const url = "https://go.getblock.io/<ACCESS-TOKEN>/";
const payload = {
  "jsonrpc": "2.0",
  "method": "eth_gasPrice",
  "params": [],
  "id": "getblock.io"
};

axios.post(url, payload, {
  headers: { "Content-Type": "application/json" }
})
.then(response => {
  console.log("Result:", response.data.result);
})
.catch(error => {
  if (error.response) {
    console.error("Error:", error.response.status, error.response.data);
  } else {
    console.error("Request failed:", error.message);
  }
});

Common Errors

When using the eth_gasPrice JSON-RPC API BSC method, the following issues may occur:

• Network Latency: The response time for eth_gasPrice may be affected by network congestion, leading to delayed or outdated gas price information. To mitigate this, consider implementing a retry mechanism with exponential backoff to ensure timely data retrieval.

• Node Synchronization: If the BSC node is not fully synchronized with the network, it may return inaccurate gas price estimates. Ensure your node is fully synced or use a reliable third-party node service to obtain accurate data.

• Rate Limiting: Excessive requests to the eth_gasPrice method may trigger rate limiting by the node provider, resulting in temporary access blocks. To prevent this, optimize your application's request patterns and consider caching gas price data for short intervals.

• Inconsistent Data: Variability in gas price data across different nodes can lead to inconsistencies. Cross-reference multiple sources or nodes to validate the gas price and enhance your application's reliability.

Using the eth_gasPrice method provides Web3 applications with critical data to estimate transaction costs dynamically, enhancing user experience by allowing for timely and cost-effective transaction submissions. By leveraging real-time gas price information, developers can optimize their applications for both cost efficiency and performance, ensuring users are not overpaying for transactions on the BSC network.

Conclusion

The eth_gasPrice method in JSON-RPC is essential for retrieving the current gas price on blockchain networks like Ethereum and BNB Smart Chain (BSC). By calling eth_gasPrice, developers can efficiently estimate transaction costs and optimize their smart contract interactions. Understanding the nuances of eth_gasPrice helps ensure cost-effective and timely transactions on platforms like BSC.