Guide

ZKsync Era chain ID and RPC URL

ZKsync Era mainnet uses chain ID 324 / 0x144, RPC URL https://mainnet.era.zksync.io, explorer https://explorer.zksync.io, and ETH as the gas token.

Answer first

zkSync Era chain ID quick answer

Use 324 / 0x144 for ZKsync Era mainnet, with RPC URL https://mainnet.era.zksync.io, explorer https://explorer.zksync.io, and ETH as the gas token. The canonical indexed page for this chain is /status/zksync-era/.

Copy ZKsync Era config RPC and explorer Official docs and sources ETH gas token

Network ZKsync Era

Chain ID 324 / 0x144

RPC URL https://mainnet.era.zksync.io

Explorer https://explorer.zksync.io

Gas token ETH

Checked April 30, 2026

ZKsync Era mainnet settings

RPC URL: https://mainnet.era.zksync.io
Explorer: https://explorer.zksync.io
Chain ID: 324
Chain ID hex: 0x144
Currency symbol: ETH
Source docs: ZKsync docs

ZKsync Era EIP-3085 config JSON

Text-only wallet_addEthereumChain parameters generated from reviewed fields. Main.net does not connect wallets or request permissions.

Copy-ready JSON

Review source documentation before using this in an app or wallet flow.

{
  "chainId": "0x144",
  "chainName": "ZKsync Era",
  "nativeCurrency": {
    "name": "ETH",
    "symbol": "ETH",
    "decimals": 18
  },
  "rpcUrls": [
    "https://mainnet.era.zksync.io"
  ],
  "blockExplorerUrls": [
    "https://explorer.zksync.io"
  ]
}

Official docs and source links

Main.net links to source documentation for verification. It does not rank RPC providers or make uptime, latency, privacy, or production reliability claims about public endpoints.

ZKsync Era network details

Setup caution

ZK rollups can have different tooling, finality, and withdrawal assumptions. Verify network details in ZKsync docs before deployment.

Always verify important details in official documentation before configuring software that may sign transactions. Use the status page copy path for the current reviewed config: /status/zksync-era/#copy-ready-config.