A
Amethyst Chimpanzee
It should be fairly simple to implement support since it is an optimistic rollup fork of Optimism (OP) which is supported already.
Boba gateway: https://gateway.boba.network/
Boba blockexplorer: https://bobascan.com/ (Etherscan)
Metamask:
RPC URL: https://mainnet.boba.network
Chain ID: 288
Currency symbol: ETH