Connecting to the Polygon PoS Mainnet requires the correct RPC URL, Chain ID, and network settings. The official Polygon RPC URL is https://polygon-rpc.com/ and the Chain ID is 137. The network name is 'Polygon Mainnet', the currency symbol is POL (previously MATIC), and the block explorer URL is ht

tps://polygonscan.com. To add Polygon to MetaMask, navigate to Networks > Add Network and enter these values. ChainList.org also lists all available Polygon endpoints and allows one-click wallet connection. For zkEVM Mainnet, the Chain ID is 1101 and the RPC URL is https://zkevm-rpc.com.