Quick Start

Add Onyx Mainnet to a wallet and make a safe first transaction.

Add Onyx Mainnet

The fastest way to add Onyx to MetaMask or another EVM wallet is from the Onyx Explorer: open the explorer and use the Add Onyx Network control in the bottom-left corner for a one-click wallet prompt.

You can also enter the network details manually:

Setting	Value
Network name	Onyx Mainnet
RPC URL	https://rpc.onyx.org
Chain ID	327
Currency symbol	XCN
Explorer	https://explorer.onyx.org

For dApp / programmatic wallet setup (wallet_addEthereumChain) and RPC eth_chainId verification, see Developer Guide → Getting Started.

Important transaction rules

• XCN is represented with 18 decimals through JSON-RPC, but the native ledger has 8-decimal precision. See XCN Decimal Handling.

• A transfer to a new address can require substantially more gas because the account is created on first receipt. Always use eth_estimateGas; never hardcode 21,000. See Lazy Account Creation.

• Read eth_gasPrice when preparing a transaction and handle RPC errors instead of assuming Ethereum Mainnet fee-market behavior. See Network Fees for the current snapshot, calculation, and USD denomination.