How to get the gasPrice from the RPC?

Created by Mayank Singhal, Modified on Tue, 14 Jul at 2:18 PM by Mayank Singhal

Yes, this is possible on Polygon Mainnet using the standard JSON-RPC method eth_gasPrice.

For available RPC endpoints, see our RPC Endpoints documentation and choose one that suits your needs. We don't recommend any single RPC provider.

Using curl

curl <YOUR_MAINNET_RPC_URL> \

-X POST \

-H "Content-Type: application/json" \

-d '{"jsonrpc":"2.0","method":"eth_gasPrice","params":[],"id":1}'

Response is hex-encoded wei — convert to decimal (divide by 1e9 for Gwei).

Using ethers.js

const provider = new ethers.JsonRpcProvider(RPC_URL);

const gasPrice = (await provider.getFeeData()).gasPrice;

Using web3.js

const gasPrice = await web3.eth.getGasPrice();

Polygon Mainnet supports EIP-1559, so eth_gasPrice gives a legacy estimate.

For more accurate fees, also consider eth_maxPriorityFeePerGas or eth_feeHistory.