Debug module

debug_deleteChainSlice
Deletes a slice of a chain from the tree on all branches (Nethermind specific).
Invocation
{"method":"debug_deleteChainSlice","params":[startNumber]}
Parameter
Type
Description
startNumber
Quantity
​
Returned type
Description
Quantity
​
Example request of debug_deleteChainSlice
curl --data '{"method":"debug_deleteChainSlice","params":[startNumber],"id":1,"jsonrpc":"2.0"}' -H "Content-Type: application/json" -X POST localhost:8545
debug_getBlockRlp
Retrieves a block in the RLP-serialized form.
Invocation
{"method":"debug_getBlockRlp","params":[number]}
Parameter
Type
Description
number
Quantity
​
Returned type
Description
Data
​
Example request of debug_getBlockRlp
curl --data '{"method":"debug_getBlockRlp","params":[number],"id":1,"jsonrpc":"2.0"}' -H "Content-Type: application/json" -X POST localhost:8545
​See also CLI debug.getBlockRlp​
debug_getBlockRlpByHash
Retrieves a block in the RLP-serialized form.
Invocation
{"method":"debug_getBlockRlpByHash","params":[hash]}
Parameter
Type
Description
hash
Hash
​
Returned type
Description
Data
​
Example request of debug_getBlockRlpByHash
curl --data '{"method":"debug_getBlockRlpByHash","params":[hash],"id":1,"jsonrpc":"2.0"}' -H "Content-Type: application/json" -X POST localhost:8545
​See also CLI debug.getBlockRlpByHash​
debug_getChainLevel
Retrieves a representation of tree branches on a given chain level (Nethermind specific).
Invocation
{"method":"debug_getChainLevel","params":[number]}
Parameter
Type
Description
number
Quantity
​
Returned type
Description
ChainLevelForRpc object
​
Example request of debug_getChainLevel
Objects in debug_getChainLevel
curl --data '{"method":"debug_getChainLevel","params":[number],"id":1,"jsonrpc":"2.0"}' -H "Content-Type: application/json" -X POST localhost:8545
ChainLevelForRpc
Field name
Type
BlockInfos
BlockInfoForRpc[] object
HasBlockOnMainChain
Boolean
BlockInfoForRpc[]
Field name
Type
BlockHash
Hash
TotalDifficulty
Quantity
WasProcessed
Boolean
IsFinalized
Boolean
​See also CLI debug.getChainLevel​
debug_getConfigValue
Retrieves the Nethermind configuration value, e.g. JsonRpc.Enabled
Invocation
{"method":"debug_getConfigValue","params":[category, name]}
Parameter
Type
Description
category
String
​
name
String
​
Returned type
Description
Object
​
Example request of debug_getConfigValue
curl --data '{"method":"debug_getConfigValue","params":[category, name],"id":1,"jsonrpc":"2.0"}' -H "Content-Type: application/json" -X POST localhost:8545
debug_getSyncStage
Retrives Nethermind Sync Stage, With extra Metadata
Invocation
{"method":"debug_getSyncStage","params":[]}
Returned type
Description
SyncReportSymmary object
​
Example request of debug_getSyncStage
Objects in debug_getSyncStage
curl --data '{"method":"debug_getSyncStage","params":[],"id":1,"jsonrpc":"2.0"}' -H "Content-Type: application/json" -X POST localhost:8545
SyncReportSymmary
Field name
Type
CurrentStage
String
debug_insertReceipts
Insert receipts for the block after verifying receipts root correctness.
Invocation
{"method":"debug_insertReceipts","params":[blockParameter, receiptForRpc]}
Parameter
Type
Description
blockParameter
BlockParameter object
​
receiptForRpc
ReceiptForRpc[] object
​
Returned type
Description
Boolean
​
Example request of debug_insertReceipts
Objects in debug_insertReceipts
curl --data '{"method":"debug_insertReceipts","params":[blockParameter, receiptForRpc],"id":1,"jsonrpc":"2.0"}' -H "Content-Type: application/json" -X POST localhost:8545
BlockParameter
Field name
Type
Type
BlockParameterType object
BlockNumber
Quantity
BlockHash
Hash
RequireCanonical
Boolean
BlockParameterType
Quantity or String (latest, earliest, pending)
ReceiptForRpc[]
Field name
Type
TransactionHash
Hash
TransactionIndex
Quantity
BlockHash
Hash
BlockNumber
Quantity
CumulativeGasUsed
Quantity
GasUsed
Quantity
BlobGasUsed
Quantity
BlobGasPrice
Quantity
EffectiveGasPrice
Quantity
From
Address
To
Address
ContractAddress
Address
Logs
LogEntryForRpc[] object
LogsBloom
Bloom Object
Root
Hash
Status
Quantity
Error
String
Type
TxType object
debug_migrateReceipts
Sets the block number up to which receipts will be migrated to (Nethermind specific).
Invocation
{"method":"debug_migrateReceipts","params":[blockNumber]}
Parameter
Type
Description
blockNumber
Quantity
​
Returned type
Description
Boolean
​
Example request of debug_migrateReceipts
curl --data '{"method":"debug_migrateReceipts","params":[blockNumber],"id":1,"jsonrpc":"2.0"}' -H "Content-Type: application/json" -X POST localhost:8545
​See also CLI debug.migrateReceipts​
debug_resetHead
Updates / resets head block - use only when the node got stuck due to DB / memory corruption (Nethermind specific).
Invocation
{"method":"debug_resetHead","params":[blockHash]}
Parameter
Type
Description
blockHash
Hash
​
Returned type
Description
Boolean
​
Example request of debug_resetHead
curl --data '{"method":"debug_resetHead","params":[blockHash],"id":1,"jsonrpc":"2.0"}' -H "Content-Type: application/json" -X POST localhost:8545
debug_standardTraceBlockToFile
Writes to a file the full stack trace of all invoked opcodes of the transaction specified (or all transactions if not specified) that was included in the block specified. The parent of the block must be present or it will fail.
Invocation
{"method":"debug_standardTraceBlockToFile","params":[blockHash, options]}
Parameter
Type
Description
blockHash
Hash
​
options
GethTraceOptions object
​
Returned type
Description
Array
​
Example request of debug_standardTraceBlockToFile
Objects in debug_standardTraceBlockToFile
curl --data '{"method":"debug_standardTraceBlockToFile","params":[blockHash, options],"id":1,"jsonrpc":"2.0"}' -H "Content-Type: application/json" -X POST localhost:8545
GethTraceOptions
Field name
Type
DisableMemory
Boolean
DisableStack
Boolean
DisableStorage
Boolean
EnableMemory
Boolean
Timeout
String
Tracer
String
TxHash
Hash
Default
GethTraceOptions object
debug_traceBlock
Returns the full stack trace of all invoked opcodes of all transactions that were included in the block specified. The parent of the block must be present or it will fail.
Invocation
{"method":"debug_traceBlock","params":[blockRlp, options]}
Parameter
Type
Description
blockRlp
Data
​
options
GethTraceOptions object
​
Returned type
Description
GethLikeTxTrace object
​
Example request of debug_traceBlock
Objects in debug_traceBlock
curl --data '{"method":"debug_traceBlock","params":[blockRlp, options],"id":1,"jsonrpc":"2.0"}' -H "Content-Type: application/json" -X POST localhost:8545
GethTraceOptions
Field name
Type
DisableMemory
Boolean
DisableStack
Boolean
DisableStorage
Boolean
EnableMemory
Boolean
Timeout
String
Tracer
String
TxHash
Hash
Default
GethTraceOptions object
GethLikeTxTrace
Field name
Type
StoragesByDepth
Array
Gas
Quantity
Failed
Boolean
ReturnValue
Data
Entries
Array
​See also CLI debug.traceBlock​
debug_traceBlockByHash
Similar to debug_traceBlock, this method accepts a block hash and replays the block that is already present in the database.
Invocation
{"method":"debug_traceBlockByHash","params":[blockHash, options]}
Parameter
Type
Description
blockHash
Hash
​
options
GethTraceOptions object
​
Returned type
Description
GethLikeTxTrace object
​
Example request of debug_traceBlockByHash
Objects in debug_traceBlockByHash
curl --data '{"method":"debug_traceBlockByHash","params":[blockHash, options],"id":1,"jsonrpc":"2.0"}' -H "Content-Type: application/json" -X POST localhost:8545
GethTraceOptions
Field name
Type
DisableMemory
Boolean
DisableStack
Boolean
DisableStorage
Boolean
EnableMemory
Boolean
Timeout
String
Tracer
String
TxHash
Hash
Default
GethTraceOptions object
GethLikeTxTrace
Field name
Type
StoragesByDepth
Array
Gas
Quantity
Failed
Boolean
ReturnValue
Data
Entries
Array
​See also CLI debug.traceBlockByHash​
debug_traceBlockByNumber
Similar to debug_traceBlock, this method accepts a block number as well as "latest" or "finalized" and replays the block that is already present in the database.
Invocation
{"method":"debug_traceBlockByNumber","params":[blockParameter, options]}
Parameter
Type
Description
blockParameter
BlockParameter object
​
options
GethTraceOptions object
​
Returned type
Description
GethLikeTxTrace object
​
Example request of debug_traceBlockByNumber
Objects in debug_traceBlockByNumber
curl --data '{"method":"debug_traceBlockByNumber","params":[blockParameter, options],"id":1,"jsonrpc":"2.0"}' -H "Content-Type: application/json" -X POST localhost:8545
BlockParameter
Field name
Type
Type
BlockParameterType object
BlockNumber
Quantity
BlockHash
Hash
RequireCanonical
Boolean
BlockParameterType
Quantity or String (latest, earliest, pending)
GethTraceOptions
Field name
Type
DisableMemory
Boolean
DisableStack
Boolean
DisableStorage
Boolean
EnableMemory
Boolean
Timeout
String
Tracer
String
TxHash
Hash
Default
GethTraceOptions object
GethLikeTxTrace
Field name
Type
StoragesByDepth
Array
Gas
Quantity
Failed
Boolean
ReturnValue
Data
Entries
Array
​See also CLI debug.traceBlockByNumber​
debug_traceCall
This method lets you run an eth_call within the context of the given block execution using the final state of parent block as the base. The block can be specified either by hash or by number. It takes the same input object as a eth_call. It returns the same output as debug_traceTransaction.
Invocation
{"method":"debug_traceCall","params":[call, blockParameter, options]}
Parameter
Type
Description
call
TransactionForRpc object
​
blockParameter
BlockParameter object
​
options
GethTraceOptions object
​
Returned type
Description
GethLikeTxTrace object
​
Example request of debug_traceCall
Objects in debug_traceCall
curl --data '{"method":"debug_traceCall","params":[call, blockParameter, options],"id":1,"jsonrpc":"2.0"}' -H "Content-Type: application/json" -X POST localhost:8545
TransactionForRpc
Field name
Type
DefaultChainId
Quantity
Hash
Hash
Nonce
Quantity
BlockHash
Hash
BlockNumber
Quantity
TransactionIndex
Quantity
From
Address
To
Address
Value
Quantity
GasPrice
Quantity
MaxPriorityFeePerGas
Quantity
MaxFeePerGas
Quantity
Gas
Quantity
Input
Data
ChainId
Quantity
Type
TxType object
AccessList
AccessListItemForRpc[] object
MaxFeePerBlobGas
Quantity
BlobVersionedHashes
Data
V
Quantity
S
Quantity
R
Quantity
YParity
Quantity
TxType
​EIP2718 transaction type
AccessListItemForRpc[]
Field name
Type
Address
Address
StorageKeys
Array
BlockParameter
Field name
Type
Type
BlockParameterType object
BlockNumber
Quantity
BlockHash
Hash
RequireCanonical
Boolean
BlockParameterType
Quantity or String (latest, earliest, pending)
GethTraceOptions
Field name
Type
DisableMemory
Boolean
DisableStack
Boolean
DisableStorage
Boolean
EnableMemory
Boolean
Timeout
String
Tracer
String
TxHash
Hash
Default
GethTraceOptions object
GethLikeTxTrace
Field name
Type
StoragesByDepth
Array
Gas
Quantity
Failed
Boolean
ReturnValue
Data
Entries
Array
debug_traceTransaction
This method will attempt to run the transaction in the exact same manner as it was executed on the network. It will replay any transaction that may have been executed prior to this one before it will finally attempt to execute the transaction that corresponds to the given hash.
Invocation
{"method":"debug_traceTransaction","params":[transactionHash, options]}
Parameter
Type
Description
transactionHash
Hash
​
options
GethTraceOptions object
​
Returned type
Description
GethLikeTxTrace object
​
Example request of debug_traceTransaction
Objects in debug_traceTransaction
curl --data '{"method":"debug_traceTransaction","params":[transactionHash, options],"id":1,"jsonrpc":"2.0"}' -H "Content-Type: application/json" -X POST localhost:8545

Field name	Type
DefaultChainId	`Quantity`
Hash	`Hash`
Nonce	`Quantity`
BlockHash	`Hash`
BlockNumber	`Quantity`
TransactionIndex	`Quantity`
From	`Address`
To	`Address`
Value	`Quantity`
GasPrice	`Quantity`
MaxPriorityFeePerGas	`Quantity`
MaxFeePerGas	`Quantity`
Gas	`Quantity`
Input	`Data`
ChainId	`Quantity`
Type	`TxType object`
AccessList	`AccessListItemForRpc[] object`
MaxFeePerBlobGas	`Quantity`
BlobVersionedHashes	`Data`
V	`Quantity`
S	`Quantity`
R	`Quantity`
YParity	`Quantity`

Field name	Type
BlockInfos	`BlockInfoForRpc[] object`
HasBlockOnMainChain	`Boolean`

Field name	Type
BlockHash	`Hash`
TotalDifficulty	`Quantity`
WasProcessed	`Boolean`
IsFinalized	`Boolean`

Parameter	Type	Description
blockParameter	`BlockParameter object`
receiptForRpc	`ReceiptForRpc[] object`

Field name	Type
Type	`BlockParameterType object`
BlockNumber	`Quantity`
BlockHash	`Hash`
RequireCanonical	`Boolean`

Field name	Type
TransactionHash	`Hash`
TransactionIndex	`Quantity`
BlockHash	`Hash`
BlockNumber	`Quantity`
CumulativeGasUsed	`Quantity`
GasUsed	`Quantity`
BlobGasUsed	`Quantity`
BlobGasPrice	`Quantity`
EffectiveGasPrice	`Quantity`
From	`Address`
To	`Address`
ContractAddress	`Address`
Logs	`LogEntryForRpc[] object`
LogsBloom	`Bloom Object`
Root	`Hash`
Status	`Quantity`
Error	`String`
Type	`TxType object`

Field name	Type
DisableMemory	`Boolean`
DisableStack	`Boolean`
DisableStorage	`Boolean`
EnableMemory	`Boolean`
Timeout	`String`
Tracer	`String`
TxHash	`Hash`
Default	`GethTraceOptions object`

Field name	Type
StoragesByDepth	`Array`
Gas	`Quantity`
Failed	`Boolean`
ReturnValue	`Data`
Entries	`Array`

Parameter	Type	Description
blockParameter	`BlockParameter object`
options	`GethTraceOptions object`

Parameter	Type	Description
call	`TransactionForRpc object`
blockParameter	`BlockParameter object`
options	`GethTraceOptions object`