Main.netChain settings lookup

Chain profile

Sei chain ID 1329 and mainnet RPC URL

Reviewed

Checked June 26, 2026. Sei publishes EVM network information for mainnet. Sei documentation lists chain ID 1329, the official EVM RPC URL, and mainnet explorer links.

Chain ID1329 / 0x531
RPC URLhttps://evm-rpc.sei-apis.com
Explorerhttps://seiscan.io
Gas tokenSEI
VerificationVerified metadata
Manual reviewJune 26, 2026
Evidence snapshot

Verification record

Manual metadata review and automated evidence checks are tracked separately. This is not a live uptime, latency, or production reliability monitor.

Manual metadata review
Verification status
Verified metadata
Verification run
source-monitoring-2026-06-26
Verification tool
source-monitoring-refresh
Source set
Sei docs
Manual review cadence
monthly; after July 26, 2026
Latest recorded chain ID probe
eth_chainId matched expected 0x531; observed 0x531 on

MethodologyReport a correction

Sei wallet-add fields

Wallet directory sites often expose a connect button. Main.net keeps the same setup fields as text so developers can compare them with official/source docs before callingwallet_addEthereumChain.

chainId
0x531 (1329)
chainName
Sei
nativeCurrency
SEI; name SEI, symbol SEI, decimals 18
rpcUrls
https://evm-rpc.sei-apis.com
blockExplorerUrls
https://seiscan.io
GlossaryChain IDHow wallet and RPC software identify a mainnet network.GlossaryRPC endpointWhat an RPC URL does and why public endpoints can be rate-limited.GlossaryMainnetThe production network context for these chain settings.Gas tokenSEI gas tokenOther mainnet rows that use SEI for gas.Network categoryEVM mainnetsCompare Sei with related evm mainnets by chain ID, RPC URL, explorer, and source links.Network categoryL1 mainnetsCompare Sei with related l1 mainnets by chain ID, RPC URL, explorer, and source links.GuideChain ID listChain IDs, RPC URLs, explorers, and source links across Main.net.

Monitoring evidence

These checks are review signals only. They are not uptime, latency, privacy, or production reliability claims.

Snapshot generated
Source checks
2 sources checked
Source changes
0 changes since the previous source hash snapshot
Source fetch failures
0
eth_chainId probe
matched expected 0x531
Per-source check timing
Included in the monitoring snapshot, not used as this page's review date

View monitoring snapshots orsource change history.

Network endpoints

Primary public RPC
https://evm-rpc.sei-apis.com
Explorer
https://seiscan.io
Official/source documentation
Sei docs
Chain type
EVM L1 mainnet
Chain ID hex
0x531
Manual review cadence
monthly; next review after July 26, 2026

Sei common questions

What is the Sei mainnet RPC URL?
Sei's listed primary public RPC URL is https://evm-rpc.sei-apis.com.
What is Sei's chain ID?
Sei's listed chain ID is 1329.
What block explorer does Sei use?
Sei's listed block explorer is https://seiscan.io.
What gas token does Sei use?
Sei's listed gas token is SEI.

Copy-ready config

Neutral app configuration built from the verified fields above. Copy buttons only place text on your clipboard; they do not connect a wallet, request permissions, or rank RPC providers.

Chain ID decimal1329
Chain ID hex0x531
RPC URLhttps://evm-rpc.sei-apis.com
Explorer URLhttps://seiscan.io
EIP-3085-shaped JSON

Rendered as text for manual review before use.

{
  "chainId": "0x531",
  "chainName": "Sei",
  "nativeCurrency": {
    "name": "SEI",
    "symbol": "SEI",
    "decimals": 18
  },
  "rpcUrls": [
    "https://evm-rpc.sei-apis.com"
  ],
  "blockExplorerUrls": [
    "https://seiscan.io"
  ]
}

Developer snippets

Static examples generated from Main.net fields. These snippets are for manual configuration review and read-only RPC checks; they do not connect wallets, create signers, submit writes, or rank providers.

ts

viem chain definition

Read-only snippet generated from Main.net fields. Review official sources before production use.

import { defineChain } from 'viem'

export const seiMainnet = defineChain({
  id: 1329,
  name: "Sei",
  nativeCurrency: {
    name: "SEI",
    symbol: "SEI",
    decimals: 18,
  },
  rpcUrls: {
    default: { http: ["https://evm-rpc.sei-apis.com"] },
    public: { http: ["https://evm-rpc.sei-apis.com"] },
  },
  blockExplorers: {
    default: {
      name: "seiscan.io",
      url: "https://seiscan.io",
    },
  },
})
ts

wagmi read-only config

Read-only transport example generated from Main.net fields. It does not include account adapters or transaction actions.

import { createConfig, http } from 'wagmi'
import { seiMainnet } from './sei'

export const config = createConfig({
  chains: [seiMainnet],
  transports: {
    [seiMainnet.id]: http("https://evm-rpc.sei-apis.com"),
  },
})
ts

ethers read-only provider

Read-only JsonRpcProvider example generated from Main.net fields. It does not create a signer.

import { JsonRpcProvider } from 'ethers'

export const provider = new JsonRpcProvider("https://evm-rpc.sei-apis.com", {
  chainId: 1329,
  name: "sei",
})

const network = await provider.getNetwork()
console.log(network.chainId)
bash

curl eth_chainId check

Minimal JSON-RPC identity check. This verifies the endpoint-reported chain ID only, not uptime or production suitability.

curl -s -X POST \
  -H 'content-type: application/json' \
  --data '{"jsonrpc":"2.0","id":1,"method":"eth_chainId","params":[]}' \
  https://evm-rpc.sei-apis.com

# Expected chain ID: 1329 / 0x531

Developer signals

External dashboards a developer may inspect before choosing where to deploy. Main.net links to these references but does not collect the metric values, normalize methodologies, rank chains, or recommend deployments.

liquidityDeFiLlama chain pageExternal TVL, stablecoin, volume, fee, and protocol coverage where this chain is covered.explorerSei explorerExplorer-hosted blocks, transactions, contracts, token transfers, and verification tools from the listed explorer.

Source links

Sei EVM networksSei EVM overview

Safety note

Sei documentation notes that public endpoints have rate limits. Production apps should consider a dedicated RPC provider or running their own node.

Main.net is an independent reference site. It does not operate this chain, custody assets, execute transactions, or provide investment advice.

Report a correction

If this page has stale RPC, explorer, chain ID, or source information, open a public correction issue with a source link so it can be checked.

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