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POST
/
evm
eth_gasPrice
curl --request POST \
  --url https://hyperliquid-mainnet.core.chainstack.com/4f8d8f4040bdacd1577bff8058438274/evm \
  --header 'Content-Type: application/json' \
  --data '
{
  "jsonrpc": "2.0",
  "method": "eth_gasPrice",
  "params": [],
  "id": 1
}
'
{
  "jsonrpc": "2.0",
  "id": 1,
  "result": "0x3b9aca00"
}
The eth_gasPrice JSON-RPC method returns the base fee for the next small block on Hyperliquid EVM. This method provides the gas price for standard (small) block transactions.
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​
Parameters

This method takes no parameters.

​
Response

The method returns the current gas price as a hexadecimal string representing wei.

​
Response structure

Gas price:
  • result — The base fee for the next small block in wei as a hexadecimal string

​
Data interpretation

Gas price format:
  • Returned as hexadecimal string with 0x prefix
  • Value represents wei (smallest unit of ether)
  • Convert to gwei by dividing by 10^9
  • Convert to ether by dividing by 10^18
Price calculation:
  • 1 gwei = 10^9 wei
  • 1 ether = 10^18 wei
  • Example: 0x3b9aca00 = 1,000,000,000 wei = 1 gwei

​
Usage example

​
Basic implementation

// Get gas price for small blocks on Hyperliquid
const getGasPrice = async () => {
  const response = await fetch('https://hyperliquid-mainnet.core.chainstack.com/YOUR_ENDPOINT/evm', {
    method: 'POST',
    headers: {
      'Content-Type': 'application/json',
    },
    body: JSON.stringify({
      jsonrpc: '2.0',
      method: 'eth_gasPrice',
      params: [],
      id: 1
    })
  });
  
  const data = await response.json();
  const gasPriceWei = parseInt(data.result, 16);
  
  return {
    hex: data.result,
    wei: gasPriceWei,
    gwei: gasPriceWei / 1e9,
    ether: gasPriceWei / 1e18
  };
};

// Compare small block vs big block gas prices
const compareGasPrices = async () => {
  const [smallBlockPrice, bigBlockPrice] = await Promise.all([
    // Small block gas price
    fetch('https://hyperliquid-mainnet.core.chainstack.com/YOUR_ENDPOINT/evm', {
      method: 'POST',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify({
        jsonrpc: '2.0',
        method: 'eth_gasPrice',
        params: [],
        id: 1
      })
    }).then(r => r.json()),
    
    // Big block gas price
    fetch('https://hyperliquid-mainnet.core.chainstack.com/YOUR_ENDPOINT/evm', {
      method: 'POST',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify({
        jsonrpc: '2.0',
        method: 'eth_bigBlockGasPrice',
        params: [],
        id: 2
      })
    }).then(r => r.json())
  ]);
  
  return {
    smallBlock: {
      hex: smallBlockPrice.result,
      gwei: parseInt(smallBlockPrice.result, 16) / 1e9
    },
    bigBlock: {
      hex: bigBlockPrice.result,
      gwei: parseInt(bigBlockPrice.result, 16) / 1e9
    }
  };
};

// Usage
getGasPrice()
  .then(price => console.log(`Small block gas price: ${price.gwei} gwei`))
  .catch(error => console.error('Error:', error));

​
Hyperliquid gas pricing

​
Small vs big blocks

Small block pricing:
  • eth_gasPrice returns the base fee for the next small block
  • Used for standard transactions
  • Default pricing for most operations
Big block pricing:
  • eth_bigBlockGasPrice returns the base fee for the next big block
  • Used for addresses that are using big blocks
  • Check with eth_usingBigBlocks to determine if an address uses big blocks

​
Transaction fee calculation

Basic calculation:
  • Transaction cost = gas price × gas limit
  • Use eth_gasPrice for standard transactions
  • Use eth_bigBlockGasPrice if the address uses big blocks
Unit conversions:
  • 1 gwei = 10^9 wei
  • 1 ether = 10^18 wei
  • Example: 0x3b9aca00 = 1,000,000,000 wei = 1 gwei

​
Example request

Shell
curl -X POST \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_gasPrice","params":[],"id":1}' \
  https://hyperliquid-mainnet.core.chainstack.com/4f8d8f4040bdacd1577bff8058438274/evm

​
Use cases

The eth_gasPrice method is essential for applications that need to:
  • Standard transaction pricing: Get gas price for small block transactions
  • Fee estimation: Calculate transaction costs for standard operations
  • Wallet applications: Display gas prices for regular transactions
  • Cost comparison: Compare small block vs big block pricing
  • Transaction planning: Determine appropriate gas pricing strategy
  • Development tools: Test applications with current small block pricing
  • Analytics platforms: Monitor small block gas price trends
  • Automated systems: Set gas prices for standard automated transactions
On Hyperliquid, eth_gasPrice returns the base fee for the next small block. For addresses using big blocks, use eth_bigBlockGasPrice instead. Check if an address uses big blocks with eth_usingBigBlocks.

Body

application/json
​
jsonrpc
enum<string>
default:2.0
required

JSON-RPC version

Available options:
2.0
​
method
enum<string>
default:eth_gasPrice
required

The RPC method name

Available options:
eth_gasPrice
​
params
array
required

No parameters required

​
id
integer
default:1
required

Request identifier

Response

200 - application/json

Successful response with the current gas price

​
jsonrpc
string

JSON-RPC version

​
id
integer

Request identifier

​
result
string

The current gas price in wei as a hexadecimal string

Last modified on October 19, 2025