Gas and Fees

Gas and Fees

Paxeer supports both legacy and EIP-1559 transactions, but the fee model differs from Ethereum in three ways that affect how you estimate and set gas.

Legacy Gas Price Floor

Legacy transactions (type 0) on Paxeer must meet a minimum gas price set by on-chain governance. This floor can change via governance proposals - do not hard-code a specific value.

Use eth_gasPrice to read the current minimum:

import { createPublicClient, http } from 'viem';
import { sei } from 'viem/chains';

const client = createPublicClient({ chain: sei, transport: http() });
const gasPrice = await client.getGasPrice();

import { ethers } from 'ethers';

const provider = new ethers.JsonRpcProvider('https://evm-rpc.sei-apis.com');
const feeData = await provider.getFeeData();
const gasPrice = feeData.gasPrice;

EIP-1559 Fee Model

Paxeer supports EIP-1559 transactions (type 2), but does not burn the base fee. Fees go entirely to validators rather than being partially burned as on Ethereum.

This does not affect how you construct or send transactions - maxFeePerGas and maxPriorityFeePerGas work as expected. It is relevant only if your application models token supply or displays fee-burn information to users.

const fees = await client.estimateFeesPerGas();
// fees.maxFeePerGas and fees.maxPriorityFeePerGas are usable as-is

const feeData = await provider.getFeeData();
// feeData.maxFeePerGas and feeData.maxPriorityFeePerGas are usable as-is

SSTORE Cost

The gas cost of SSTORE (writing to contract storage) is governance-adjustable on Paxeer. It is currently 72,000 gas - the same on mainnet and testnet (see Divergence from Ethereum) - but treat that as the current value, not a constant: do not hard-code storage write estimates in your application.

Always use eth_estimateGas for any transaction that writes to storage:

const gas = await client.estimateGas({
  account,
  to: contractAddress,
  data: encodedCalldata,
});

// Add a buffer for governance changes during high-activity periods
const gasWithBuffer = (gas * 120n) / 100n; // 20% buffer

const gas = await provider.estimateGas({
  from: signer.address,
  to: contractAddress,
  data: encodedCalldata,
});

Summary