> For the complete documentation index, see [llms.txt](https://docs.getblock.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.getblock.io/api-reference/polygon-matic/polygon-json-rpc-api.md). # Polygon JSON-RPC API The Polygon JSON-RPC API is the standard interface developers use to communicate with the Polygon blockchain. It allows decentralized applications (dApps) to read on-chain data, query smart contracts, and submit transactions without the need to run a local copy of a full blockchain node ### API Method Categories #### Account Methods Methods for retrieving account-related information: * `eth_accounts` - Returns accounts managed by the node * `eth_getBalance` - Returns account balance * `eth_getTransactionCount` - Returns transaction count (nonce) * `eth_getCode` - Returns contract bytecode * `eth_getStorageAt` - Returns storage value at position * `eth_getProof` - Returns Merkle proof for account state #### Block Methods Methods for retrieving block information: * `eth_blockNumber` - Returns latest block number * `eth_getBlockByHash` - Returns block by hash * `eth_getBlockByNumber` - Returns block by number * `eth_getBlockTransactionCountByHash` - Returns transaction count in block by hash * `eth_getBlockTransactionCountByNumber` - Returns transaction count in block by number #### Transaction Methods Methods for transaction operations: * `eth_getTransactionByHash` - Returns transaction by hash * `eth_getTransactionByBlockHashAndIndex` - Returns transaction by block hash and index * `eth_getTransactionByBlockNumberAndIndex` - Returns transaction by block number and index * `eth_getTransactionReceipt` - Returns transaction receipt * `eth_sendRawTransaction` - Submits signed transaction * `eth_sendTransaction` - Creates and sends transaction * `eth_sign` - Signs data with account * `eth_pendingTransactions` - Returns pending transactions #### Smart Contract Methods Methods for smart contract interaction: * `eth_call` - Executes contract call without transaction * `eth_estimateGas` - Estimates gas for transaction #### Filter Methods Methods for event filtering and subscription: * `eth_newFilter` - Creates log filter * `eth_newBlockFilter` - Creates block filter * `eth_newPendingTransactionFilter` - Creates pending transaction filter * `eth_getFilterChanges` - Returns filter changes * `eth_getFilterLogs` - Returns filter logs * `eth_getLogs` - Returns logs matching criteria * `eth_uninstallFilter` - Removes filter * `eth_subscribe` - Creates subscription (WebSocket) * `eth_unsubscribe` - Removes subscription (WebSocket) #### Gas Methods Methods for gas price information: * `eth_gasPrice` - Returns current gas price * `eth_feeHistory` - Returns historical gas fees * `eth_maxPriorityFeePerGas` - Returns max priority fee suggestion #### Network Methods Methods for network information: * `eth_chainId` - Returns chain ID * `eth_syncing` - Returns sync status * `eth_protocolVersion` - Returns protocol version * `net_version` - Returns network ID * `net_listening` - Returns listening status * `net_peerCount` - Returns peer count #### Node Methods Methods for node information: * `eth_coinbase` - Returns coinbase address * `eth_mining` - Returns mining status * `eth_hashrate` - Returns hashrate * `rpc_modules` - Returns enabled RPC modules * `web3_clientVersion` - Returns client version * `web3_sha3` - Returns Keccak-256 hash #### Uncle Methods Methods for uncle block information: * `eth_getUncleByBlockHashAndIndex` - Returns uncle by block hash and index * `eth_getUncleByBlockNumberAndIndex` - Returns uncle by block number and index * `eth_getUncleCountByBlockHash` - Returns uncle count by block hash * `eth_getUncleCountByBlockNumber` - Returns uncle count by block number