EVM chain info for MetaMask support

evm_chain_rpcs

Optimistic Ethereum

Network Name: Optimistic Ethereum
New RPC Url: https://mainnet.optimism.io/
ChainID: 10
Symbol: ETH
Block Explorer URL: https://optimistic.etherscan.io

Binance Smart Chain

Network Name: BSC
New RPC Url: https://bsc-dataseed.binance.org/
ChainID: 56
Symbol: BNB
Block Explorer URL: https://bscscan.com

Polygon (Matic)

Network Name: Polygon
New RPC Url: https://rpc-mainnet.maticvigil.com/
ChainID: 137
Symbol: MATIC
Block Explorer URL: https://explorer.matic.network/

Huobi ECO

Network Name: HECO
New RPC Url: https://http-mainnet-node.huobichain.com
ChainID: 128
Symbol: HT
Block Explorer URL: https://hecoinfo.com

Avalanche Network

Network Name: Avalanche
New RPC Url: https://api.avax.network/ext/bc/C/rpc
ChainID: 0xa86a
Symbol: AVAX
Block Explorer URL: https://cchain.explorer.avax.network/

Fantom Opera

Network Name: Fantom
New RPC Url: https://rpcapi.fantom.network
ChainID: 250
Symbol: FTM
Block Explorer URL: https://ftmscan.com/

Harmony

Network Name: Harmony
New RPC Url: https://api.harmony.one
ChainID: 1666600000
Symbol: ONE
Block Explorer URL: https://explorer.harmony.one/#/

xDai

Network Name: xDai
New RPC Url: https://rpc.xdaichain.com/
ChainID: 0x64
Symbol: xDai
Block Explorer URL: https://blockscout.com/xdai/mainnet

Hi, you can get all evm-based chains info from a dApp https://evmchain.info, includes rpc, chainId, explorer.