Ethereum API Methods

Returns the EIP-155 chain ID of the network the endpoint is serving. Use it to confirm a wallet is connected to the chain you expect.

Returns the height of the most recent block. The simplest possible health check for an EVM endpoint.

Returns the full block (header + transactions) for a given block number or tag. The canonical "give me block N" call.

Returns the native-token balance of an account at the requested block. The canonical "how much ETH does this address hold?" call.

Returns the node's suggested legacy gas price in wei. On EIP-1559 chains, prefer eth_feeHistory or eth_maxPriorityFeePerGas.

Execute a message call against the EVM without writing to the chain. The workhorse method for reading contract state.

Retrieve event logs matching a filter. The right call for indexers, analytics, and any backfill that doesn't need real-time subscriptions.

Broadcast a signed transaction to the network. The only way to write to an EVM chain through a stateless RPC.

Learn how to use the eth_estimateGas method to calculate the estimated gas required for Ethereum transactions. Includes parameters, examples, and best practices.

Learn how to use the eth_feeHistory method to retrieve historical gas fee information from the Ethereum blockchain. Includes examples of fee analysis and percentile calculations.

Learn how to use the eth_getBlockByHash method to fetch detailed information about Ethereum blocks using their hash. Includes transaction details and block properties.

Learn how to use the eth_getBlockReceipts method to retrieve complete transaction receipt data for an entire Ethereum block. Includes field documentation and usage examples.

Learn how to use the eth_getBlockTransactionCountByHash method to retrieve the number of transactions in an Ethereum block identified by its hash.

Learn how to use the eth_getBlockTransactionCountByNumber method to retrieve the number of transactions in an Ethereum block identified by its number.

Learn how to use the eth_getCode method to retrieve compiled bytecode from Ethereum smart contracts. Includes examples for bytecode verification and analysis.

Learn how to efficiently poll for new blockchain events using eth_getFilterChanges - essential for monitoring smart contract activity, token transfers, and blockchain state changes.

Learn how to use eth_getFilterLogs to fetch all historical logs matching a filter's criteria in one request - essential for event analysis and initial data loading in dApps.

Learn how to use the eth_getProof method to retrieve cryptographic proofs for account and storage data on the Ethereum blockchain. Includes verification examples.

Learn how to use the eth_getStorageAt method to access raw storage data from Ethereum smart contracts. Includes storage layout explanations and practical examples.

Learn how to use the eth_getTransactionByBlockHashAndIndex method to get transaction information using a block hash and transaction index position.

Learn how to use the eth_getTransactionByBlockNumberAndIndex method to fetch transaction details using a block number and index position in the Ethereum blockchain.

Learn how to use the eth_getTransactionByHash method to fetch detailed transaction information using a transaction hash. Includes examples for various transaction types.

Learn how to use the eth_getTransactionCount method to retrieve the number of transactions sent from an Ethereum address, also known as the nonce.

Learn how to use the eth_getTransactionReceipt method to fetch transaction execution results, including status, gas used, logs, and contract deployment information.

Learn how to use the eth_getUncleByBlockHashAndIndex method to fetch uncle (ommer) block information using a block hash and uncle index.

Learn how to use the eth_getUncleByBlockNumberAndIndex method to fetch uncle (ommer) block information using a block number and uncle index.

Learn how to use the eth_getUncleCountByBlockHash method to retrieve the number of uncle blocks in a specified block on the Ethereum blockchain.

Learn how to use the eth_getUncleCountByBlockNumber method to retrieve the number of uncle blocks in a specified block height on the Ethereum blockchain.

Learn how to use the eth_maxPriorityFeePerGas method to retrieve the current recommended priority fee (tip) needed for transaction inclusion on the Ethereum network.

Learn how to use eth_newBlockFilter to monitor new blocks on the Ethereum blockchain - essential for tracking transaction confirmations, syncing applications, and building real-time blockchain explorers.

Learn how to use eth_newFilter to create filters for Ethereum event logs - the key to monitoring smart contract events, tracking token transfers, and building real-time blockchain applications.

Learn how to use eth_newPendingTransactionFilter to monitor the Ethereum mempool in real-time - essential for transaction tracking, gas price optimization, and market analysis.

Learn how to use the eth_subscribe method to receive real-time notifications about blockchain events including new blocks, pending transactions, logs, and synchronization status via WebSocket connections.

Learn how to use eth_syncing to check if your Ethereum node is currently synchronizing with the blockchain network, track sync progress, and understand different synchronization states.

Learn how to use eth_uninstallFilter to clean up unused filters in Ethereum - avoid resource leaks and optimize node performance by properly removing filters that are no longer needed.

Learn how to use the eth_unsubscribe method to cancel WebSocket-based subscriptions to Ethereum blockchain events and efficiently manage connection resources.

Learn how to use the debug_getBadBlocks method to retrieve, analyze, and understand invalid blocks detected by your Ethereum node, essential for network operators and investigators of consensus issues.

Learn how to use the debug_storageRangeAt method to inspect and retrieve contract storage data within a specified range for comprehensive smart contract debugging, state analysis, and contract auditing on Ethereum.

Learn how to use the debug_traceBlock method to obtain comprehensive trace information for all transactions in an Ethereum block, providing deep visibility into opcode execution for advanced debugging and analysis.

Learn how to use the debug_traceBlockByHash method to retrieve detailed opcode-level execution traces for all transactions in a specific Ethereum block identified by its hash, essential for debugging and analyzing complex blockchain behavior.

Learn how to use the debug_traceBlockByNumber method to obtain a full trace of all invoked opcodes of all transactions included in a specific Ethereum block identified by its number.

Learn how to use the debug_traceCall method to simulate and trace contract calls with opcode-level details, allowing deep inspection of EVM execution for debugging and analysis without affecting the blockchain.

Learn how to use the debug_traceTransaction method to get opcode-level execution details for any historical transaction, with exact reproduction of the original blockchain state for accurate debugging and analysis.

Learn how to use the trace_block method to retrieve comprehensive execution traces for all transactions in a specified Ethereum block, providing detailed insight into smart contract interactions.

Learn how to use the trace_call method to simulate transaction execution and trace the call without modifying the blockchain state. Perfect for smart contract testing and debugging.

Learn how to use the trace_filter method to effectively search for and filter transaction traces based on multiple criteria, including address, block range, and more.

Learn how to use the trace_replayBlockTransactions method to replay all transactions in a block with trace information for detailed analysis and debugging.

Learn how to use the trace_replayTransaction method to replay a transaction with detailed traces and state changes for comprehensive debugging and analysis.

Learn how to use the trace_transaction method to retrieve detailed execution trace information for a specific transaction by its hash.

Learn how to use the net_listening method to check whether your Ethereum node is actively listening for network connections and troubleshoot connectivity issues.

Learn how to use the net_peerCount method to check how many peers are connected to your Ethereum node, monitor network health, and diagnose connectivity issues.

Learn how to use the net_version method to identify which Ethereum network your client is connected to, including mainnet, testnets, and other EVM-compatible networks.

Learn how to use the txpool_inspect method to get a human-readable overview of pending and queued transactions in your Ethereum node's mempool for monitoring and diagnostics.

Learn how to use the txpool_status method to monitor pending and queued transactions in your Ethereum node's mempool, check network congestion, and optimize gas price strategies.

Learn how to use the web3_clientVersion method to identify which Ethereum client software and version your node is running, useful for debugging and compatibility checks.

Learn how to use the web3_sha3 method to generate Keccak-256 hashes for various Ethereum operations including function signatures, event topics, and blockchain data verification.