zkSync Era
zkSync Era API is available on Web3 API platform.
The zkSync Era Sepolia testnet endpoint reaches end of support on Ankr RPC on 15 September 2026 and stops answering on that date. zkSync Era mainnet is not affected. See the changelog for the full list and what to change.
zkSync Era is a layer 2 rollup that uses zero-knowledge proofs to scale Ethereum without compromising on security or decentralization. Since it's EVM compatible (Solidity/Vyper), 99% of Ethereum projects can redeploy without refactoring or re-auditing a single line of code. zkSync Era also uses an LLVM-based compiler that will eventually let developers write smart contracts in C++, Rust, and other popular languages.
In order for your Web3 application to interact with zkSync Era — either by reading blockchain data or sending transactions to the network — it must connect to a zkSync Era node. Developers interact with the blockchain using the methods provided by the API.
The API interaction follows the JSON-RPC which is a stateless, light-weight remote procedure call (RPC) protocol. It defines several data structures and the rules around their processing. It is transport agnostic in that the concepts can be used within the same process, over sockets, over HTTP, or in other message-passing environments. It uses JSON (RFC 4627) as data format.
Methods supported
web3_clientVersion— returns the current client version.net_version— returns the current network ID.net_listening— returns true if client is actively listening for network connections.eth_syncing— returns data on the sync status or false.eth_gasPrice— returns the current price per gas in wei.eth_accounts— returns a list of addresses owned by client.eth_blockNumber— returns the number of most recent block.eth_getBalance— returns the balance of the account specified by address.eth_getStorageAt— returns the value from a storage position at an address specified.eth_getTransactionCount— returns the number of transactions sent from an address.eth_getBlockTransactionCountByHash— returns the number of transactions in a block specified by block hash.eth_getBlockTransactionCountByNumber— returns the number of transactions in the block specified by number.eth_getUncleCountByBlockHash— returns the number of uncles in a block specified by block hash.eth_getUncleCountByBlockNumber— returns the number of uncles in a block specified by block number.eth_getCode— returns code at an address specified.eth_sendRawTransaction— creates a new message call transaction or a contract creation for signed transactions.eth_call— executes a new message call immediately without creating a transaction on the blockchain.eth_estimateGas— generates and returns an estimate of how much gas is necessary to allow the transaction to complete.eth_getBlockByHash— returns information for the block specified by block hash.eth_getBlockByNumber— returns information for the block specified by block number.eth_getTransactionByHash— returns information on a transaction specified by transaction hash.eth_getTransactionByBlockHashAndIndex— returns information on a transaction specified by block hash and transaction index position.eth_getTransactionByBlockNumberAndIndex— returns information on a transaction by block number and transaction index position.eth_getTransactionReceipt— returns the receipt of a transaction by transaction hash.eth_getLogs— returns logs matching the parameters specified.
Premium-only methods (zkSync Era Sepolia Testnet):
debug_traceBlockByHash— traces the execution of all transactions within a block specified by hash.debug_traceBlockByNumber— traces the execution of all transactions within a block specified by number.debug_traceBlock— traces the execution of all transactions within a block.
Methods
web3, net, eth
web3_clientVersionnet_versionnet_listeningeth_syncingeth_gasPriceeth_accountseth_blockNumbereth_getBalanceeth_getStorageAteth_getTransactionCounteth_getBlockTransactionCountByHasheth_getBlockTransactionCountByNumbereth_getUncleCountByBlockHasheth_getUncleCountByBlockNumbereth_getCodeeth_sendRawTransactioneth_calleth_estimateGaseth_getBlockByHasheth_getBlockByNumbereth_getTransactionByHasheth_getTransactionByBlockHashAndIndexeth_getTransactionByBlockNumberAndIndex