RPC method

eth_getBalance on Sei

Supported on SwiftNodes

Everything below was measured on 2026-10-13 by calling eth_getBalance on Sei through the same endpoint customers use, and is re-measured weekly.

What eth_getBalance does

Returns an account's balance of the chain's native token in wei (the smallest unit, 10^-18), at a given block. It works for contracts as well as wallets; ERC-20 balances need eth_call to the token's balanceOf instead.

eth_getBalance on Sei: what we measured

The zero address held 1,384 SEI on Sei when we measured. On most chains a zero-address balance is funds sent there by mistake or burned; either way it differs from chain to chain, so reading it is a quick sanity test that your client is talking to Sei and not another network.

You can pin a read to an exact block with {"blockHash": "0x..."} (EIP-1898). Unlike a block number, a hash fails loudly if that block was reorganised away.

Balances at blocks older than about 1,000,000 blocks need historical state. Archive routing did not measure as available for this chain.

Unit	wei of SEI (1 SEI = 10^18 wei)
Balance of 0x0000…0000 (zero address)	1,384 SEI
Balance of 0x…dEaD (burn address)	187.30 SEI
Block given by hash (EIP-1898)	accepted
History on default routing	about the last 1,000,000 blocks
Older blocks (archive=1)	not measured as available

Example request

curl -s https://rpc.swiftnodes.io/rpc/sei?key=YOUR_API_KEY \
  -X POST -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","id":1,"method":"eth_getBalance","params":["0x000000000000000000000000000000000000dEaD","latest"]}'

import { createPublicClient, formatEther, http } from "viem";

const client = createPublicClient({
  transport: http("https://rpc.swiftnodes.io/rpc/sei?key=YOUR_API_KEY"),
});

const wei = await client.getBalance({ address: "0x000000000000000000000000000000000000dEaD" });
console.log(formatEther(wei), "SEI");

// At a past block
const then = await client.getBalance({ address: "0x000000000000000000000000000000000000dEaD", blockNumber: 237363964n });

// Many balances in one request: Multicall3 is deployed on Sei
const balances = await client.multicall({
  contracts: addresses.map((a) => ({ address: "0xcA11bde05977b3631167028862bE2a173976CA11", abi: [{ name: "getEthBalance", type: "function", stateMutability: "view", inputs: [{ type: "address" }], outputs: [{ type: "uint256" }] }], functionName: "getEthBalance", args: [a] })),
});

Other methods on Sei

eth_blockNumberSupported
eth_chainIdSupported
eth_getBlockByNumberSupported
eth_getTransactionByHashNot measured
eth_getTransactionReceiptNot measured
eth_callSupported
eth_estimateGasSupported
eth_gasPriceSupported
eth_maxPriorityFeePerGasSupported
eth_sendRawTransactionSupported
eth_getTransactionCountNot measured
eth_getCodeSupported
eth_subscribeSupported
eth_getLogsSupported
eth_getBlockReceiptsSupported
eth_feeHistorySupported
eth_getProofNot available
eth_createAccessListSupported
debug_traceCallSupported
trace_blockNot available
trace_transactionNot available

eth_getBalance on other chains

Frequently asked questions

Does Sei support eth_getBalance?

Yes. eth_getBalance answered on the SwiftNodes Sei endpoint when our weekly probe called it through the customer path (2026-10-13).

What unit does eth_getBalance return on Sei?

Wei of SEI, as a hex string: divide by 10^18 for SEI. viem's formatEther does this.

Can I get historical balances on Sei?

Default routing keeps about 1,000,000 blocks of state. Older balances did not measure as available.

Sei endpoints, live block height and WebSocket status are on the Sei RPC page.

One key covers every chain we serve, and SwiftNodes has a free tier.