RPC Reference

Complete reference for the 51 JSON-RPC methods available through MegaETH's public HTTP and WebSocket endpoints.

This reference documents the JSON-RPC methods available through the public MegaETH HTTP and WebSocket endpoints. Use JSON-RPC for request framing, shared wire types, errors, and gateway limits.

Available Methods

The table below reflects the public MegaETH Mainnet endpoint. "Unavailable" includes methods recognized by the gateway but disabled or unimplemented upstream. Managed providers may expose additional methods.

Method	Availability	Additional restrictions or behavior
debug_getHistoryTransactionCount	Available	MegaETH-specific.
debug_getRawHeader	Available
debug_traceBlockByHash	Available	Large responses are streamed.
debug_traceBlockByNumber	Available	Large responses are streamed.
debug_traceCall	Unavailable	The public endpoint returns -32601.
debug_traceTransaction	Available	Large responses are streamed.
eth_accounts	Available	Returns an empty array because the gateway does not manage user keys.
eth_blockNumber	Available
eth_call	Available	Compute gas limited to 60,000,000.
eth_callAfter	Unavailable	The public endpoint returns -32601.
eth_callMany	Available	100 bundles and 100 total calls; 60,000,000 compute gas per call; timeout capped at 25 seconds.
eth_chainId	Available
eth_createAccessList	Available	Routed to the compute pool; no separate 60M compute override is added.
eth_estimateGas	Available	Uses an internal CPU-time limit; the source default is 0.5 seconds.
eth_feeHistory	Available	Block range limited to 256.
eth_gasPrice	Available
eth_getBalance	Available
eth_getBlockByHash	Available
eth_getBlockByNumber	Available
eth_getBlockReceipts	Available
eth_getBlockTransactionCountByHash	Available
eth_getBlockTransactionCountByNumber	Available
eth_getCode	Available
eth_getCodeByHash	Available	MegaETH-specific.
eth_getFilterChanges	Unavailable	The public endpoint returns -32601.
eth_getFilterLogs	Unavailable	The public endpoint returns -32601.
eth_getHeaderByHash	Available	MegaETH-specific.
eth_getHeaderByNumber	Available	MegaETH-specific.
eth_getLogs	Available
eth_getLogsWithCursor	Unavailable	The public endpoint returns -32601.
eth_getStorageAt	Available
eth_getTransactionByBlockHashAndIndex	Unavailable	The public endpoint returns -32601.
eth_getTransactionByBlockNumberAndIndex	Unavailable	The public endpoint returns -32601.
eth_getTransactionByHash	Available
eth_getTransactionCount	Available
eth_getTransactionReceipt	Available
eth_getUncleByBlockHashAndIndex	Available	Returns null for valid MegaETH blocks.
eth_getUncleByBlockNumberAndIndex	Available	Returns null for valid MegaETH blocks.
eth_getUncleCountByBlockHash	Available	Returns 0x0 for valid MegaETH blocks.
eth_getUncleCountByBlockNumber	Available	Returns 0x0 for valid MegaETH blocks.
eth_getWithdrawalProof	Available	OP Stack withdrawal proof method.
eth_maxPriorityFeePerGas	Available
eth_mining	Unavailable	The node reports the method as unimplemented.
eth_newBlockFilter	Unavailable	The public endpoint returns -32601.
eth_newFilter	Unavailable	The public endpoint returns -32601.
eth_newPendingTransactionFilter	Unavailable	The public endpoint returns -32601.
eth_protocolVersion	Available	Legacy compatibility method.
eth_sendRawTransaction	Available
eth_sendRawTransactionSync	Available	MegaETH-specific synchronous receipt method.
eth_subscribe	WebSocket only	Supports six subscription types; see the method page.
eth_syncing	Available
eth_uninstallFilter	Available	Returns false when the filter ID does not exist.
eth_unsubscribe	WebSocket only
mega_getBlockWitness	Available	MegaETH-specific.
mega_getWithdrawalProof	Available	Alias routed to eth_getWithdrawalProof.
mega_outputAtBlock	Available	OP Stack output-root method.
net_listening	Available
net_peerCount	Available
net_version	Available
optimism_outputAtBlock	Available	Alias of mega_outputAtBlock.
realtime_sendRawTransaction	Available	MegaETH-specific synchronous receipt method.
trace_block	Unavailable	The public endpoint returns -32601.
trace_call	Unavailable	The public endpoint returns -32601.
trace_transaction	Unavailable	The public endpoint returns -32601.
web3_clientVersion	Available

State and simulation

• eth_accounts
• eth_call
• eth_callMany
• eth_createAccessList
• eth_estimateGas
• eth_getBalance
• eth_getCode
• eth_getCodeByHash
• eth_getStorageAt
• eth_getTransactionCount

Blocks, transactions, and receipts

• eth_blockNumber
• eth_getBlockByHash
• eth_getBlockByNumber
• eth_getBlockReceipts
• eth_getBlockTransactionCountByHash
• eth_getBlockTransactionCountByNumber
• eth_getHeaderByHash
• eth_getHeaderByNumber
• eth_getTransactionByHash
• eth_getTransactionReceipt
• eth_getUncleByBlockHashAndIndex
• eth_getUncleByBlockNumberAndIndex
• eth_getUncleCountByBlockHash
• eth_getUncleCountByBlockNumber
• eth_syncing

Logs and subscriptions

• eth_getLogs
• eth_subscribe — WebSocket only
• eth_uninstallFilter
• eth_unsubscribe — WebSocket only

Fees and transaction submission

• eth_feeHistory
• eth_gasPrice
• eth_maxPriorityFeePerGas
• eth_sendRawTransaction
• eth_sendRawTransactionSync
• realtime_sendRawTransaction

Debug methods

• debug_getHistoryTransactionCount
• debug_getRawHeader
• debug_traceBlockByHash
• debug_traceBlockByNumber
• debug_traceTransaction

MegaETH and OP Stack methods

• eth_getWithdrawalProof
• mega_getBlockWitness
• mega_getWithdrawalProof
• mega_outputAtBlock
• optimism_outputAtBlock

Network and client information

• eth_chainId
• eth_protocolVersion
• net_listening
• net_peerCount
• net_version
• web3_clientVersion