The Polygon API follows a JSON-RPC standard. This doc contains the methods that Unifra supports for Polygon development (smart contracts & decentralized applications) on mainnet and Mumbai testnet.
Here are the atricles in this section:
eth_getBlockTransactionCountByHash
eth_getBlockTransactionCountByNumber
eth_getTransactionByBlockNumberAndIndex
eth_getTransactionReceiptsByBlock
eth_getTransactionByBlockHashAndIndex
eth_newPendingTransactionFilter
eth_getUncleByBlockNumberAndIndex
eth_getUncleByBlockHashAndIndex