This section documents the core Ethereum JSON-RPC API methods that provide essential functionality for interacting with the Ethereum blockchain. These methods form the foundation of most Ethereum applications and development workflows.

Core Ethereum Methods (eth_)

These methods provide core functionality for interacting with the Ethereum blockchain, including account balances, transaction data, block information, and smart contract interactions.

Method Calls	HTTP!	WS!
eth_blockNumber Returns the current block number
eth_call Executes a new message call immediately without creating a transaction
eth_chainId Returns the chain ID of the current network
eth_estimateGas Generates and returns an estimate of how much gas is necessary to execute a transaction
eth_feeHistory Returns transaction fee history data for the requested block range
eth_gasPrice Returns the current gas price in wei
eth_getBalance Returns the balance of an account for a given address
eth_getBlockByHash Returns information about a block specified by its hash
eth_getBlockByNumber Returns information about a block specified by its number
eth_getBlockReceipts Returns all transaction receipts for a given block
eth_getBlockTransactionCountByHash Returns the number of transactions in a block specified by its hash
eth_getBlockTransactionCountByNumber Returns the number of transactions in a block specified by its number
eth_getCode Returns the compiled smart contract code at a given address
eth_getFilterChanges Polling method for a filter, returns an array of logs which occurred since last poll
eth_getFilterLogs Returns an array of all logs matching filter with given id
eth_getLogs Returns an array of logs matching the given filter criteria
eth_getProof Returns the merkle proof for an account's state
eth_getStorageAt Returns the value from a storage position at a given address
eth_getTransactionByBlockHashAndIndex Returns transaction information by block hash and transaction index
eth_getTransactionByBlockNumberAndIndex Returns transaction information by block number and transaction index
eth_getTransactionByHash Returns transaction details by transaction hash
eth_getTransactionCount Returns the number of transactions sent from an address (nonce)
eth_getTransactionReceipt Returns the receipt of a transaction specified by its hash
eth_getUncleByBlockHashAndIndex Returns information about an uncle block by block hash and uncle index
eth_getUncleByBlockNumberAndIndex Returns information about an uncle block by block number and uncle index
eth_getUncleCountByBlockHash Returns the number of uncles in a block specified by its hash
eth_getUncleCountByBlockNumber Returns the number of uncles in a block specified by its number
eth_maxPriorityFeePerGas Returns the current maximum priority fee per gas in wei
eth_newBlockFilter Creates a filter in the node, to notify when a new block arrives
eth_newFilter Creates a filter object, based on filter options, to notify when the state changes
eth_newPendingTransactionFilter Creates a filter in the node, to notify when new pending transactions arrive
eth_sendRawTransaction Submits a raw transaction to the network
eth_subscribe Creates a subscription for specific blockchain events via WebSocket.
eth_syncing Returns information about the sync status of the node
eth_uninstallFilter Uninstalls a filter with given id
eth_unsubscribe Cancels an existing subscription via WebSocket.

Network Methods (net_)

These methods provide information about the network status and connections, helping developers monitor node connectivity and network configuration.

Method Calls	HTTP!	WS!
net_listening Returns true if the client is actively listening for network connections
net_peerCount Returns the number of peers currently connected to the client
net_version Returns the current network protocol version

Transaction Pool Methods (txpool_)

These methods allow inspection of the transaction pool status, providing visibility into pending transactions and mempool state.

Method Calls	HTTP!	WS!
txpool_inspect Returns a detailed list of transactions currently pending in the transaction pool
txpool_status Returns the number of transactions currently pending and queued

Web3 Utility Methods (web3_)

Basic web3 utility methods for general blockchain interaction, including hashing and client information.

Method Calls	HTTP!	WS!
web3_clientVersion Returns the current client version
web3_sha3 Returns the Keccak-256 hash of the given data

Ethereum Core Methods

Core Ethereum Methods (eth_)

Network Methods (net_)

Transaction Pool Methods (txpool_)

Web3 Utility Methods (web3_)

See also