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    • Ethereum
      • debug_traceBlockByHash
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      • eth_getBlockByNumber
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      • eth_getBlockTransactionCountByHash
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      • eth_getCode
      • eth_getFilterChanges
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      • eth_getTransactionByBlockNumberAndIndex
      • eth_getTransactionByHash
      • eth_getTransactionCount
      • eth_getTransactionReceipt
      • eth_getUncleByBlockHashAndIndex
      • eth_getUncleByBlockNumberAndIndex
      • eth_getUncleCountByBlockHash
      • eth_getUncleCountByBlockNumber
      • eth_maxPriorityFeePerGas
      • eth_newBlockFilter
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      • eth_protocolVersion
      • eth_sendRawTransaction
      • eth_subscribe
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      • net_peerCount
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      • trace_block
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      • trace_callMany
      • trace_filter
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      • trace_replayBlockTransactions
      • trace_replayTransaction
      • trace_transaction
      • web3_clientVersion
      • web3_sha3
    • Polygon (Mainnet / PoS)
      • bor_getAuthor
      • bor_getCurrentProposer
      • bor_getCurrentValidators
      • bor_getRootHash
      • bor_getSignersAtHash
      • debug_traceBlockByHash
      • debug_traceBlockByNumber
      • debug_traceCall
      • debug_traceTransaction
      • eth_accounts
      • eth_blockNumber
      • eth_call
      • eth_chainId
      • eth_createAccessList
      • eth_estimateGas
      • eth_feeHistory
      • eth_gasPrice
      • eth_getBalance
      • eth_getBlockByHash
      • eth_getBlockByNumber
      • eth_getBlockReceipts
      • eth_getBlockTransactionCountByHash
      • eth_getBlockTransactionCountByNumber
      • eth_getCode
      • eth_getFilterChanges
      • eth_getFilterLogs
      • eth_getLogs
      • eth_getProof
      • eth_getRootHash
      • eth_getStorageAt
      • eth_getTransactionByBlockHashAndIndex
      • eth_getTransactionByBlockNumberAndIndex
      • eth_getTransactionByHash
      • eth_getTransactionCount
      • eth_getTransactionReceipt
      • eth_maxPriorityFeePerGas
      • eth_newBlockFilter
      • eth_newFilter
      • eth_newPendingTransactionFilter
      • eth_protocolVersion
      • eth_sendRawTransaction
      • eth_subscribe
      • eth_syncing
      • eth_uninstallFilter
      • eth_unsubscribe
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      • net_peerCount
      • net_version
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      • trace_replayTransaction
      • trace_transaction
      • txpool_content
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      • txpool_status
      • web3_clientVersion
      • web3_sha3
    • Kava
      • debug_traceBlockByHash
      • debug_traceBlockByNumber
      • debug_traceTransaction
      • eth_accounts
      • eth_blockNumber
      • eth_call
      • eth_chainId
      • eth_estimateGas
      • eth_feeHistory
      • eth_gasPrice
      • eth_getBalance
      • eth_getBlockByHash
      • eth_getBlockByNumber
      • eth_getBlockTransactionCountByHash
      • eth_getBlockTransactionCountByNumber
      • eth_getCode
      • eth_getFilterChanges
      • eth_getFilterLogs
      • eth_getLogs
      • eth_getProof
      • eth_getRootHash
      • eth_getStorageAt
      • eth_getTransactionByBlockHashAndIndex
      • eth_getTransactionByBlockNumberAndIndex
      • eth_getTransactionByHash
      • eth_getTransactionCount
      • eth_getTransactionReceipt
      • eth_maxPriorityFeePerGas
      • eth_newBlockFilter
      • eth_newFilter
      • eth_newPendingTransactionFilter
      • eth_protocolVersion
      • eth_sendRawTransaction
      • eth_subscribe
      • eth_syncing
      • eth_uninstallFilter
      • eth_unsubscribe
      • net_listening
      • net_peerCount
      • net_version
      • txpool_content
      • txpool_inspect
      • txpool_status
      • web3_clientVersion
      • web3_sha3
    • Metis
      • debug_traceBlockByHash
      • debug_traceBlockByNumber
      • debug_traceTransaction
      • eth_accounts
      • eth_blockNumber
      • eth_call
      • eth_chainId
      • eth_coinbase
      • eth_estimateGas
      • eth_gasPrice
      • eth_getBalance
      • eth_getBlockByHash
      • eth_getBlockByNumber
      • eth_getBlockTransactionCountByHash
      • eth_getBlockTransactionCountByNumber
      • eth_getCode
      • eth_getFilterChanges
      • eth_getFilterLogs
      • eth_getLogs
      • eth_getProof
      • eth_getStorageAt
      • eth_getTransactionByBlockHashAndIndex
      • eth_getTransactionByBlockNumberAndIndex
      • eth_getTransactionByHash
      • eth_getTransactionCount
      • eth_getTransactionReceipt
      • eth_newBlockFilter
      • eth_newFilter
      • eth_newPendingTransactionFilter
      • eth_protocolVersion
      • eth_sendRawTransaction
      • eth_subscribe
      • eth_syncing
      • eth_uninstallFilter
      • eth_unsubscribe
      • net_listening
      • net_peerCount
      • net_version
      • txpool_content
      • txpool_inspect
      • txpool_status
      • web3_clientVersion
      • web3_sha3
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  1. Supported API Methods
  2. Kava

debug_traceTransaction

Provides a detailed record of how the transaction interacts with smart contracts, accounts, and other elements on the blockchain, helping developers understand what happened and troubleshoot issues.

Previousdebug_traceBlockByNumberNexteth_accounts

Last updated 1 year ago

Parameters

  1. Transaction Hash.

  2. Tracer - choose from one of these options:

    • 4byteTracer - Solidity contract functions are using the first four byte of the Keccak-256 hash of their signature. This tracer monitors and analyzes the usage of specific function signatures within smart contracts by capturing their unique first four bytes.

    • callTracer - collects data about all call frames executed within a transaction, creating a hierarchical list of call frames structured mirroring the EVM's operations. This is useful for debugging and analytical purposes.

    • prestateTracer - captures and analyzes the state of the blockchain before the execution of a specific transaction. It helps in understanding the state changes and effects that a transaction will have on the blockchain's data and accounts before the transaction is actually executed.

    • noopTracer - returns empty results. This is used for testing purpose.

    • opcountTracer - count and track the number of operations (or opcodes) executed during a specific transaction.

    • unigramTracer - counts the frequency of occurrence of each opcode.

    • bigramTracer - a bigram refers to a sequence of two bytes or characters. This tracer is designed to observe and provide insights into the patterns and occurrences of these two-byte sequences as they appear within the data of executed transactions.

    • trigramTracer - a trigram refers to a sequence of three bytes or characters. This tracer is designed to observe and provide insights into the patterns and occurrences of these three-byte sequences as they appear within the data of executed transactions.

    • evmdisTracer - generates the bytecode disassembly of executed transactions, providing developers with insights into how smart contracts operate at a low-level bytecode level for debugging, security audits, and performance optimization purposes.

Sample Request

curl https://lb.nodies.app/v1/<INSERT URL> \
   -H "x-api-key: <API-KEY>" \
   -X POST \
   -H "Content-Type: application/json" \
   -d '{ 
  "method": "debug_traceTransaction",
  "params": [
    "0x38f92e54c90766253656beaa11f91102e8ad5bd6e6dad0f526c9998900caadf0",
    {
      "tracer": "bigramTracer"
    }
  ],
  "id": 1,
  "jsonrpc": "2.0"
}'

Sample Response

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {
    "ADD-CALLDATALOAD": 1,
    "ADD-PUSH2": 1,
    "ADD-SWAP1": 2,
    "ADDRESS-EQ": 1,
    "AND-ADDRESS": 1,
    "AND-CALLER": 1,
    "AND-DUP2": 2,
    "AND-DUP5": 1,
    "AND-EQ": 1,
    "AND-ISZERO": 1,
    "AND-PUSH1": 2,
    "AND-PUSH2": 2,
    "AND-PUSH32": 1,
    "AND-SWAP2": 2,
    "CALLDATACOPY-PUSH1": 1,
    "CALLDATALOAD-PUSH1": 3,
    "CALLDATALOAD-SWAP4": 1,
    "CALLDATASIZE-LT": 2,
    "CALLDATASIZE-PUSH1": 3,
    "CALLER-DUP5": 1,
    "CALLER-PUSH1": 2,
    "CALLVALUE-DUP1": 1,
    "DUP1-CALLDATACOPY": 1,
    "DUP1-CALLDATALOAD": 1,
    "DUP1-CALLDATASIZE": 1,
    "DUP1-DUP1": 1,
    "DUP1-DUP3": 1,
    "DUP1-DUP6": 1,
    "DUP1-ISZERO": 2,
    "DUP1-PUSH1": 1,
    "DUP1-PUSH4": 10,
    "DUP1-RETURNDATACOPY": 1,
    "DUP1-SLOAD": 1,
    "DUP1-SWAP2": 2,
    "DUP2-AND": 1,
    "DUP2-DUP2": 1,
    "DUP2-EQ": 1,
    "DUP2-KECCAK256": 2,
    "DUP2-LT": 1,
    "DUP2-MSTORE": 6,
    "DUP2-SWAP1": 1,
    "DUP3-AND": 1,
    "DUP3-GT": 1,
    "DUP3-KECCAK256": 1,
    "DUP3-NOT": 1,
    "DUP3-PUSH1": 1,
    "DUP4-AND": 3,
    "DUP4-DUP4": 1,
    "DUP4-DUP6": 1,
    "DUP4-PUSH2": 2,
    "DUP5-DUP5": 1,
    "DUP5-GAS": 1,
    "DUP5-PUSH1": 2,
    "DUP5-PUSH2": 1,
    "DUP5-SWAP1": 1,
    "DUP5-SWAP3": 1,
    "DUP6-AND": 2,
    "DUP6-DUP6": 1,
    "DUP6-SUB": 2,
    "EQ-ISZERO": 2,
    "EQ-PUSH2": 8,
    "GAS-DELEGATECALL": 1,
    "GT-ISZERO": 1,
    "GT-PUSH2": 3,
    "ISZERO-DUP2": 1,
    "ISZERO-ISZERO": 1,
    "ISZERO-PUSH2": 8,
    "JUMP-JUMPDEST": 27,
    "JUMPDEST-CALLDATASIZE": 1,
    "JUMPDEST-CALLER": 1,
    "JUMPDEST-DUP1": 2,
    "JUMPDEST-JUMP": 1,
    "JUMPDEST-POP": 4,
    "JUMPDEST-PUSH1": 15,
    "JUMPDEST-PUSH2": 9,
    "JUMPDEST-SLOAD": 2,
    "JUMPDEST-SWAP1": 1,
    "JUMPDEST-SWAP2": 1,
    "JUMPDEST-SWAP3": 1,
    "JUMPDEST-SWAP4": 1,
    "JUMPDEST-SWAP5": 1,
    "JUMPI-DUP1": 7,
    "JUMPI-JUMPDEST": 12,
    "JUMPI-PUSH1": 2,
    "JUMPI-PUSH2": 1,
    "JUMPI-RETURNDATASIZE": 1,
    "KECCAK256-DUP1": 1,
    "KECCAK256-DUP6": 1,
    "KECCAK256-SLOAD": 2,
    "LOG3-PUSH2": 1,
    "LT-ISZERO": 1,
    "LT-PUSH2": 2,
    "MLOAD-DUP1": 2,
    "MLOAD-PUSH2": 1,
    "MLOAD-SWAP1": 1,
    "MSTORE-CALLVALUE": 1,
    "MSTORE-PUSH1": 9,
    "MSTORE-SWAP1": 1,
    "NOT-DUP3": 1,
    "POP-ADD": 1,
    "POP-DUP2": 1,
    "POP-DUP3": 1,
    "POP-JUMP": 7,
    "POP-POP": 9,
    "POP-PUSH1": 2,
    "POP-SWAP1": 1,
    "PUSH1-ADD": 2,
    "PUSH1-AND": 1,
    "PUSH1-CALLDATALOAD": 2,
    "PUSH1-CALLDATASIZE": 2,
    "PUSH1-DUP1": 5,
    "PUSH1-DUP2": 1,
    "PUSH1-DUP3": 1,
    "PUSH1-DUP4": 1,
    "PUSH1-DUP5": 1,
    "PUSH1-MLOAD": 4,
    "PUSH1-MSTORE": 5,
    "PUSH1-PUSH1": 29,
    "PUSH1-PUSH2": 3,
    "PUSH1-PUSH32": 2,
    "PUSH1-RETURN": 1,
    "PUSH1-SHL": 12,
    "PUSH1-SHR": 2,
    "PUSH1-SWAP1": 4,
    "PUSH1-SWAP3": 1,
    "PUSH1-SWAP4": 1,
    "PUSH2-CALLDATASIZE": 1,
    "PUSH2-CALLER": 1,
    "PUSH2-DUP4": 2,
    "PUSH2-JUMP": 16,
    "PUSH2-JUMPI": 23,
    "PUSH2-PUSH2": 7,
    "PUSH2-SWAP1": 1,
    "PUSH2-SWAP2": 1,
    "PUSH32-DUP5": 1,
    "PUSH32-JUMPDEST": 1,
    "PUSH32-PUSH2": 1,
    "PUSH4-EQ": 7,
    "PUSH4-GT": 3,
    "RETURNDATACOPY-DUP1": 1,
    "RETURNDATASIZE-PUSH1": 2,
    "SHL-SUB": 12,
    "SHR-DUP1": 2,
    "SLOAD-DUP2": 1,
    "SLOAD-DUP5": 1,
    "SLOAD-PUSH1": 3,
    "SLT-ISZERO": 1,
    "SSTORE-POP": 1,
    "SSTORE-SWAP2": 1,
    "SUB-AND": 6,
    "SUB-DUP1": 1,
    "SUB-DUP2": 1,
    "SUB-DUP3": 1,
    "SUB-DUP4": 3,
    "SUB-SLT": 1,
    "SUB-SWAP1": 3,
    "SWAP1-DUP2": 4,
    "SWAP1-DUP5": 1,
    "SWAP1-ISZERO": 1,
    "SWAP1-JUMP": 3,
    "SWAP1-KECCAK256": 1,
    "SWAP1-LOG3": 1,
    "SWAP1-POP": 4,
    "SWAP1-PUSH2": 2,
    "SWAP1-RETURN": 1,
    "SWAP1-SSTORE": 2,
    "SWAP1-SWAP4": 1,
    "SWAP2-DUP2": 1,
    "SWAP2-DUP6": 1,
    "SWAP2-POP": 1,
    "SWAP2-SUB": 2,
    "SWAP2-SWAP1": 3,
    "SWAP3-POP": 2,
    "SWAP3-SWAP1": 1,
    "SWAP3-SWAP2": 1,
    "SWAP4-ADD": 1,
    "SWAP4-POP": 1,
    "SWAP4-SWAP1": 1,
    "SWAP4-SWAP3": 1,
    "SWAP5-PUSH1": 1
  }
}
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