The Solana API allows applications to connect to a Solana node that is part of the Solana blockchain. Developers can interact with on-chain data and send different types of transactions to the network by utilizing the endpoints provided by the API.
The Solana API follows a JSON-RPC 2.0 standard. We extended a field named chainId to specify which Solana network we use.
chainId Value (int)
So the entire JSON RPC request body will look as follows：