Management APIs

Beside the official DApp APIs interface go-ethereum has support for additional management APIs. Similar to the DApp APIs, these are also provided using JSON-RPC and follow exactly the same conventions. Geth comes with a console client which has support for all additional APIs described here.

Enabling the management APIs

To offer these APIs over the Geth RPC endpoints, please specify them with the --${interface}api command line argument (where ${interface} can be rpc for the HTTP endpoint, ws for the WebSocket endpoint and ipc for the unix socket (Unix) or named pipe (Windows) endpoint).

For example: geth --ipcapi admin,eth,miner --rpcapi eth,web3 --rpc

Enables the admin, official DApp and miner API over the IPC interface
Enables the official DApp and web3 API over the HTTP interface

The HTTP RPC interface must be explicitly enabled using the --rpc flag.

Please note, offering an API over the HTTP (rpc) or WebSocket (ws) interfaces will give everyone access to the APIs who can access this interface (DApps, browser tabs, etc). Be careful which APIs you enable. By default Geth enables all APIs over the IPC (ipc) interface and only the db, eth, net and web3 APIs over the HTTP and WebSocket interfaces.

To determine which APIs an interface provides, the modules JSON-RPC method can be invoked. For example over an ipc interface on unix systems:

echo '{"jsonrpc":"2.0","method":"modules","params":[],"id":1}' | nc -U $datadir/geth.ipc

will give all enabled modules including the version number:

{  
   "id":1,
   "jsonrpc":"2.0",
   "result":{  
      "admin":"1.0",
      "db":"1.0",
      "debug":"1.0",
      "eth":"1.0",
      "miner":"1.0",
      "net":"1.0",
      "personal":"1.0",
      "shh":"1.0",
      "txpool":"1.0",
      "web3":"1.0"
   }
}

Consuming the management APIs

These additional APIs follow the same conventions as the official DApp APIs. Web3 can be extended and used to consume these additional APIs.

The different functions are split into multiple smaller logically grouped APIs. Examples are given for the JavaScript console but can easily be converted to an RPC request.

2 examples:

Console: miner.start()
IPC: echo '{"jsonrpc":"2.0","method":"miner_start","params":[],"id":1}' | nc -U $datadir/geth.ipc
HTTP: curl -X POST --data '{"jsonrpc":"2.0","method":"miner_start","params":[],"id":74}' localhost:8545

With the number of THREADS as an arguments:

Console: miner.start(4)
IPC: echo '{"jsonrpc":"2.0","method":"miner_start","params":[4],"id":1}' | nc -U $datadir/geth.ipc
HTTP: curl -X POST --data '{"jsonrpc":"2.0","method":"miner_start","params":[4],"id":74}' localhost:8545

List of management APIs

Beside the officially exposed DApp API namespaces (eth, shh, web3), Geth provides the following extra management API namespaces:

admin: Geth node management
debug: Geth node debugging
miner: Miner and DAG management
personal: Account management
txpool: Transaction pool inspection

admin	debug	miner	personal	txpool
addPeer	backtraceAt	hashrate	importRawKey	content
datadir	blockProfile	makeDAG	listAccounts	inspect
nodeInfo	cpuProfile	setExtra	lockAccount	status
peers	dumpBlock	setGasPrice	newAccount
setSolc	gcStats	start	unlockAccount
startRPC	getBlockRlp	startAutoDAG	sendTransaction
startWS	goTrace	stop
stopRPC	memStats	stopAutoDAG
stopWS	seedHash
	setBlockProfileRate
	setHead
	stacks
	startCPUProfile
	startGoTrace
	stopCPUProfile
	stopGoTrace
	traceBlock
	traceBlockByNumber
	traceBlockByHash
	traceBlockFromFile
	traceTransaction
	verbosity
	vmodule
	writeBlockProfile
	writeMemProfile

Admin

The admin API gives you access to several non-standard RPC methods, which will allow you to have a fine grained control over your Geth instance, including but not limited to network peer and RPC endpoint management.

admin_addPeer

The addPeer administrative method requests adding a new remote node to the list of tracked static nodes. The node will try to maintain connectivity to these nodes at all times, reconnecting every once in a while if the remote connection goes down.

The method accepts a single argument, the enode URL of the remote peer to start tracking and returns a BOOL indicating whether the peer was accepted for tracking or some error occurred.

Client	Method invocation
Go	`admin.AddPeer(url string) (bool, error)`
Console	`admin.addPeer(url)`
RPC	`{"method": "admin_addPeer", "params": [url]}`

Example

> admin.addPeer("enode://a979fb575495b8d6db44f750317d0f4622bf4c2aa3365d6af7c284339968eef29b69ad0dce72a4d8db5ebb4968de0e3bec910127f134779fbcb0cb6d3331163c@52.16.188.185:30303")
true

admin_datadir

The datadir administrative property can be queried for the absolute path the running Geth node currently uses to store all its databases.

Client	Method invocation
Go	`admin.Datadir() (string, error`)
Console	`admin.datadir`
RPC	`{"method": "admin_datadir"}`

Example

> admin.datadir
"/home/karalabe/.ethereum"

admin_nodeInfo

The nodeInfo administrative property can be queried for all the information known about the running Geth node at the networking granularity. These include general information about the node itself as a participant of the ÐΞVp2p P2P overlay protocol, as well as specialized information added by each of the running application protocols (e.g. eth, les, shh, bzz).

Client	Method invocation
Go	`admin.NodeInfo() (*p2p.NodeInfo, error`)
Console	`admin.nodeInfo`
RPC	`{"method": "admin_nodeInfo"}`

Example

> admin.nodeInfo
{
  enode: "enode://44826a5d6a55f88a18298bca4773fca5749cdc3a5c9f308aa7d810e9b31123f3e7c5fba0b1d70aac5308426f47df2a128a6747040a3815cc7dd7167d03be320d@[::]:30303",
  id: "44826a5d6a55f88a18298bca4773fca5749cdc3a5c9f308aa7d810e9b31123f3e7c5fba0b1d70aac5308426f47df2a128a6747040a3815cc7dd7167d03be320d",
  ip: "::",
  listenAddr: "[::]:30303",
  name: "Geth/v1.5.0-unstable/linux/go1.6",
  ports: {
    discovery: 30303,
    listener: 30303
  },
  protocols: {
    eth: {
      difficulty: 17334254859343145000,
      genesis: "0xd4e56740f876aef8c010b86a40d5f56745a118d0906a34e69aec8c0db1cb8fa3",
      head: "0xb83f73fbe6220c111136aefd27b160bf4a34085c65ba89f24246b3162257c36a",
      network: 1
    }
  }
}

admin_peers

The peers administrative property can be queried for all the information known about the connected remote nodes at the networking granularity. These include general information about the nodes themselves as participants of the ÐΞVp2p P2P overlay protocol, as well as specialized information added by each of the running application protocols (e.g. eth, les, shh, bzz).

Client	Method invocation
Go	`admin.Peers() ([]*p2p.PeerInfo, error`)
Console	`admin.peers`
RPC	`{"method": "admin_peers"}`

Example

> admin.peers
[{
    caps: ["eth/61", "eth/62", "eth/63"],
    id: "08a6b39263470c78d3e4f58e3c997cd2e7af623afce64656cfc56480babcea7a9138f3d09d7b9879344c2d2e457679e3655d4b56eaff5fd4fd7f147bdb045124",
    name: "Geth/v1.5.0-unstable/linux/go1.5.1",
    network: {
      localAddress: "192.168.0.104:51068",
      remoteAddress: "71.62.31.72:30303"
    },
    protocols: {
      eth: {
        difficulty: 17334052235346465000,
        head: "5794b768dae6c6ee5366e6ca7662bdff2882576e09609bf778633e470e0e7852",
        version: 63
      }
    }
}, /* ... */ {
    caps: ["eth/61", "eth/62", "eth/63"],
    id: "fcad9f6d3faf89a0908a11ddae9d4be3a1039108263b06c96171eb3b0f3ba85a7095a03bb65198c35a04829032d198759edfca9b63a8b69dc47a205d94fce7cc",
    name: "Geth/v1.3.5-506c9277/linux/go1.4.2",
    network: {
      localAddress: "192.168.0.104:55968",
      remoteAddress: "121.196.232.205:30303"
    },
    protocols: {
      eth: {
        difficulty: 17335165914080772000,
        head: "5794b768dae6c6ee5366e6ca7662bdff2882576e09609bf778633e470e0e7852",
        version: 63
      }
    }
}]

admin_setSolc

The setSolc administrative method sets the Solidity compiler path to be used by the node when invoking the eth_compileSolidity RPC method. The Solidity compiler path defaults to /usr/bin/solc if not set, so you only need to change it for using a non-standard compiler location.

The method accepts an absolute path to the Solidity compiler to use (specifying a relative path would depend on the current – to the user unknown – working directory of Geth), and returns the version string reported by solc --version.

Client	Method invocation
Go	`admin.SetSolc(path string) (string, error`)
Console	`admin.setSolc(path)`
RPC	`{"method": "admin_setSolc", "params": [path]}`

Example

> admin.setSolc("/usr/bin/solc")
"solc, the solidity compiler commandline interface\nVersion: 0.3.2-0/Release-Linux/g++/Interpreter\n\npath: /usr/bin/solc"

admin_startRPC

The startRPC administrative method starts an HTTP based JSON RPC API webserver to handle client requests. All the parameters are optional:

host: network interface to open the listener socket on (defaults to "localhost")
port: network port to open the listener socket on (defaults to 8545)
cors: cross-origin resource sharing header to use (defaults to "")
apis: API modules to offer over this interface (defaults to "eth,net,web3")

The method returns a boolean flag specifying whether the HTTP RPC listener was opened or not. Please note, only one HTTP endpoint is allowed to be active at any time.

Client	Method invocation
Go	`admin.StartRPC(host string, port rpc.HexNumber, cors string, apis string) (bool, error)`
Console	`admin.startRPC(host, port, cors, apis)`
RPC	`{"method": "admin_startRPC", "params": [host, port, cors, apis]}`

Example

> admin.startRPC("127.0.0.1", 8545)
true

admin_startWS

The startWS administrative method starts an WebSocket based JSON RPC API webserver to handle client requests. All the parameters are optional:

host: network interface to open the listener socket on (defaults to "localhost")
port: network port to open the listener socket on (defaults to 8546)
cors: cross-origin resource sharing header to use (defaults to "")
apis: API modules to offer over this interface (defaults to "eth,net,web3")

The method returns a boolean flag specifying whether the WebSocket RPC listener was opened or not. Please note, only one WebSocket endpoint is allowed to be active at any time.

Client	Method invocation
Go	`admin.StartWS(host string, port rpc.HexNumber, cors string, apis string) (bool, error)`
Console	`admin.startWS(host, port, cors, apis)`
RPC	`{"method": "admin_startWS", "params": [host, port, cors, apis]}`

Example

> admin.startWS("127.0.0.1", 8546)
true

admin_stopRPC

The stopRPC administrative method closes the currently open HTTP RPC endpoint. As the node can only have a single HTTP endpoint running, this method takes no parameters, returning a boolean whether the endpoint was closed or not.

Client	Method invocation
Go	`admin.StopRPC() (bool, error`)
Console	`admin.stopRPC()`
RPC	`{"method": "admin_stopRPC"`

Example

> admin.stopRPC()
true

admin_stopWS

The stopWS administrative method closes the currently open WebSocket RPC endpoint. As the node can only have a single WebSocket endpoint running, this method takes no parameters, returning a boolean whether the endpoint was closed or not.

Client	Method invocation
Go	`admin.StopWS() (bool, error`)
Console	`admin.stopWS()`
RPC	`{"method": "admin_stopWS"`

Example

> admin.stopWS()
true

Debug

The debug API gives you access to several non-standard RPC methods, which will allow you to inspect, debug and set certain debugging flags during runtime.

debug_backtraceAt

Sets the logging backtrace location. When a backtrace location is set and a log message is emitted at that location, the stack of the goroutine executing the log statement will be printed to stderr.

The location is specified as <filename>:<line>.

Client	Method invocation
Console	`debug.backtraceAt(string)`
RPC	`{"method": "debug_backtraceAt", "params": [string]}`

Example:

> debug.backtraceAt("server.go:443")

debug_blockProfile

Turns on block profiling for the given duration and writes profile data to disk. It uses a profile rate of 1 for most accurate information. If a different rate is desired, set the rate and write the profile manually using debug_writeBlockProfile.

Client	Method invocation
Console	`debug.blockProfile(file, seconds)`
RPC	`{"method": "debug_blockProfile", "params": [string, number]}`

debug_cpuProfile

Turns on CPU profiling for the given duration and writes profile data to disk.

Client	Method invocation
Console	`debug.cpuProfile(file, seconds)`
RPC	`{"method": "debug_cpuProfile", "params": [string, number]}`

debug_dumpBlock

Retrieves the state that corresponds to the block number and returns a list of accounts (including storage and code).

Client	Method invocation
Go	`debug.DumpBlock(number uint64) (state.World, error)`
Console	`debug.traceBlockByHash(number, [options])`
RPC	`{"method": "debug_dumpBlock", "params": [number]}`

Example

> debug.dumpBlock(10)
{
    fff7ac99c8e4feb60c9750054bdc14ce1857f181: {
      balance: "49358640978154672",
      code: "",
      codeHash: "c5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470",
      nonce: 2,
      root: "56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
      storage: {}
    },
    fffbca3a38c3c5fcb3adbb8e63c04c3e629aafce: {
      balance: "3460945928",
      code: "",
      codeHash: "c5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470",
      nonce: 657,
      root: "56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
      storage: {}
    }
  },
  root: "19f4ed94e188dd9c7eb04226bd240fa6b449401a6c656d6d2816a87ccaf206f1"
}

debug_gcStats

Returns GC statistics.

See https://golang.org/pkg/runtime/debug/#GCStats for information about the fields of the returned object.

Client	Method invocation
Console	`debug.gcStats()`
RPC	`{"method": "debug_gcStats", "params": []}`

debug_getBlockRlp

Retrieves and returns the RLP encoded block by number.

Client	Method invocation
Go	`debug.GetBlockRlp(number uint64) (string, error)`
Console	`debug.getBlockRlp(number, [options])`
RPC	`{"method": "debug_getBlockRlp", "params": [number]}`

References: RLP

debug_goTrace

Turns on Go runtime tracing for the given duration and writes trace data to disk.

Client	Method invocation
Console	`debug.goTrace(file, seconds)`
RPC	`{"method": "debug_goTrace", "params": [string, number]}`

debug_memStats

Returns detailed runtime memory statistics.

See https://golang.org/pkg/runtime/#MemStats for information about the fields of the returned object.

Client	Method invocation
Console	`debug.memStats()`
RPC	`{"method": "debug_memStats", "params": []}`

debug_seedHash

Fetches and retrieves the seed hash of the block by number

Client	Method invocation
Go	`debug.SeedHash(number uint64) (string, error)`
Console	`debug.seedHash(number, [options])`
RPC	`{"method": "debug_seedHash", "params": [number]}`

debug_setHead

Sets the current head of the local chain by block number. Note, this is a destructive action and may severely damage your chain. Use with extreme caution.

Client	Method invocation
Go	`debug.SetHead(number uint64)`
Console	`debug.setHead(number)`
RPC	`{"method": "debug_setHead", "params": [number]}`

References: Ethash

debug_setBlockProfileRate

Sets the rate (in samples/sec) of goroutine block profile data collection. A non-zero rate enables block profiling, setting it to zero stops the profile. Collected profile data can be written using debug_writeBlockProfile.

Client	Method invocation
Console	`debug.setBlockProfileRate(rate)`
RPC	`{"method": "debug_setBlockProfileRate", "params": [number]}`

debug_stacks

Returns a printed representation of the stacks of all goroutines. Note that the web3 wrapper for this method takes care of the printing and does not return the string.

Client	Method invocation
Console	`debug.stacks()`
RPC	`{"method": "debug_stacks", "params": []}`

debug_startCPUProfile

Turns on CPU profiling indefinitely, writing to the given file.

Client	Method invocation
Console	`debug.startCPUProfile(file)`
RPC	`{"method": "debug_startCPUProfile", "params": [string]}`

debug_startGoTrace

Starts writing a Go runtime trace to the given file.

Client	Method invocation
Console	`debug.startGoTrace(file)`
RPC	`{"method": "debug_startGoTrace", "params": [string]}`

debug_stopCPUProfile

Stops an ongoing CPU profile.

Client	Method invocation
Console	`debug.stopCPUProfile()`
RPC	`{"method": "debug_stopCPUProfile", "params": []}`

debug_stopGoTrace

Stops writing the Go runtime trace.

Client	Method invocation
Console	`debug.startGoTrace(file)`
RPC	`{"method": "debug_stopGoTrace", "params": []}`

debug_traceBlock

The traceBlock method will return a full stack trace of all invoked opcodes of all transaction that were included included in this block. Note, the parent of this block must be present or it will fail.

Client	Method invocation
Go	`debug.TraceBlock(blockRlp []byte, config. *vm.Config) BlockTraceResult`
Console	`debug.traceBlock(tblockRlp, [options])`
RPC	`{"method": "debug_traceBlock", "params": [blockRlp, {}]}`

References: RLP

Example

> debug.traceBlock("0xblock_rlp")
{
  gas: 85301,
  returnValue: "",
  structLogs: [{
      depth: 1,
      error: "",
      gas: 162106,
      gasCost: 3,
      memory: null,
      op: "PUSH1",
      pc: 0,
      stack: [],
      storage: {}
  },
    /* snip */
  {
      depth: 1,
      error: "",
      gas: 100000,
      gasCost: 0,
      memory: ["0000000000000000000000000000000000000000000000000000000000000006", "0000000000000000000000000000000000000000000000000000000000000000", "0000000000000000000000000000000000000000000000000000000000000060"],
      op: "STOP",
      pc: 120,
      stack: ["00000000000000000000000000000000000000000000000000000000d67cbec9"],
      storage: {
        0000000000000000000000000000000000000000000000000000000000000004: "8241fa522772837f0d05511f20caa6da1d5a3209000000000000000400000001",
        0000000000000000000000000000000000000000000000000000000000000006: "0000000000000000000000000000000000000000000000000000000000000001",
        f652222313e28459528d920b65115c16c04f3efc82aaedc97be59f3f377c0d3f: "00000000000000000000000002e816afc1b5c0f39852131959d946eb3b07b5ad"
      }
  }]

debug_traceBlockByNumber

Similar to debug_traceBlock, traceBlockByNumber accepts a block number and will replay the block that is already present in the database.

Client	Method invocation
Go	`debug.TraceBlockByNumber(number uint64, config. *vm.Config) BlockTraceResult`
Console	`debug.traceBlockByNumber(number, [options])`
RPC	`{"method": "debug_traceBlockByNumber", "params": [number, {}]}`

References: RLP

debug_traceBlockByHash

Similar to debug_traceBlock, traceBlockByHash accepts a block hash and will replay the block that is already present in the database.

Client	Method invocation
Go	`debug.TraceBlockByHash(hash common.Hash, config. *vm.Config) BlockTraceResult`
Console	`debug.traceBlockByHash(hash, [options])`
RPC	`{"method": "debug_traceBlockByHash", "params": [hash {}]}`

References: RLP

debug_traceBlockFromFile

Similar to debug_traceBlock, traceBlockFromFile accepts a file containing the RLP of the block.

Client	Method invocation
Go	`debug.TraceBlockFromFile(fileName string, config. *vm.Config) BlockTraceResult`
Console	`debug.traceBlockFromFile(fileName, [options])`
RPC	`{"method": "debug_traceBlockFromFile", "params": [fileName, {}]}`

References: RLP

debug_traceTransaction

The traceTransaction debugging 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.

In addition to the hash of the transaction you may give it a secondary optional argument, which specifies the options for this specific call. The possible options are:

disableStorage: BOOL. Setting this to true will disable storage capture (default = false).
disableMemory: BOOL. Setting this to true will disable memory capture (default = false).
disableStack: BOOL. Setting this to true will disable stack capture (default = false).
fullStorage: BOOL. Setting this to true will return you, for each opcode, the full storage, including everything which hasn't changed. This is a slow process and is therefor defaulted to false. By default it will only ever give you the changed storage values.

Client	Method invocation
Go	`debug.TraceTransaction(txHash common.Hash, logger vm.LogConfig) (ExecutionResurt, error)`
Console	`debug.traceTransaction(txHash, [options])`
RPC	`{"method": "debug_traceTransaction", "params": [txHash, {}]}`

Example

> debug.traceTransaction("0x2059dd53ecac9827faad14d364f9e04b1d5fe5b506e3acc886eff7a6f88a696a")
{
  gas: 85301,
  returnValue: "",
  structLogs: [{
      depth: 1,
      error: "",
      gas: 162106,
      gasCost: 3,
      memory: null,
      op: "PUSH1",
      pc: 0,
      stack: [],
      storage: {}
  },
    /* snip */
  {
      depth: 1,
      error: "",
      gas: 100000,
      gasCost: 0,
      memory: ["0000000000000000000000000000000000000000000000000000000000000006", "0000000000000000000000000000000000000000000000000000000000000000", "0000000000000000000000000000000000000000000000000000000000000060"],
      op: "STOP",
      pc: 120,
      stack: ["00000000000000000000000000000000000000000000000000000000d67cbec9"],
      storage: {
        0000000000000000000000000000000000000000000000000000000000000004: "8241fa522772837f0d05511f20caa6da1d5a3209000000000000000400000001",
        0000000000000000000000000000000000000000000000000000000000000006: "0000000000000000000000000000000000000000000000000000000000000001",
        f652222313e28459528d920b65115c16c04f3efc82aaedc97be59f3f377c0d3f: "00000000000000000000000002e816afc1b5c0f39852131959d946eb3b07b5ad"
      }
  }]

debug_verbosity

Sets the logging verbosity ceiling. Log messages with level up to and including the given level will be printed.

The verbosity of individual packages and source files can be raised using debug_vmodule.

Client	Method invocation
Console	`debug.verbosity(level)`
RPC	`{"method": "debug_vmodule", "params": [number]}`

debug_vmodule

Sets the logging verbosity pattern.

Client	Method invocation
Console	`debug.vmodule(string)`
RPC	`{"method": "debug_vmodule", "params": [string]}`

Examples

If you want to see messages from a particular Go package (directory) and all subdirectories, use:

> debug.vmodule("eth/*=6")

If you want to restrict messages to a particular package (e.g. p2p) but exclude subdirectories, use:

> debug.vmodule("p2p=6")

If you want to see log messages from a particular source file, use

> debug.vmodule("server.go=6")

You can compose these basic patterns. If you want to see all output from peer.go in a package below eth (eth/peer.go, eth/downloader/peer.go) as well as output from package p2p at level <= 5, use:

debug.vmodule("eth/*/peer.go=6,p2p=5")

debug_writeBlockProfile

Writes a goroutine blocking profile to the given file.

Client	Method invocation
Console	`debug.writeBlockProfile(file)`
RPC	`{"method": "debug_writeBlockProfile", "params": [string]}`

debug_writeMemProfile

Writes an allocation profile to the given file. Note that the profiling rate cannot be set through the API, it must be set on the command line using the --memprofilerate flag.

Client	Method invocation
Console	`debug.writeMemProfile(file string)`
RPC	`{"method": "debug_writeBlockProfile", "params": [string]}`

Miner

The miner API allows you to remote control the node's mining operation and set various mining specific settings.

miner_hashrate

Returns the current amount of hashes per second generated by the CPU miner and any other external miners connected to the node.

Client	Method invocation
Go	`miner.Hashrate() *rpc.HexNumber`
Console	`miner.hashrate()`
RPC	`{"method": "miner_hashrate", "params": []}`

miner_makeDAG

Initiates a new DAG creation process for the given block number. This procces is required for the CPU (and GPU) mining operations unless auto DAG generation is turned on. This also allows you to create DAGs far in advance and might be diserable for slower running devices.

Client	Method invocation
Go	`miner.MakeDAG(number *rpc.HexNumber) bool`
Console	`miner.makeDAG(number)`
RPC	`{"method": "miner_makeDAG", "params": [number]}`

miner_setExtra

Sets the extra data a miner can include when miner blocks. This is capped at 32 bytes.

Client	Method invocation
Go	`miner.setExtra(extra string) (bool, error)`
Console	`miner.setExtra(string)`
RPC	`{"method": "miner_setExtra", "params": [string]}`

miner_setGasPrice

Sets the minimal accepted gas price when mining transactions. Any transactions that are below this limit are excluded from the mining process.

Client	Method invocation
Go	`miner.setGasPrice(number *rpc.HexNumber) bool`
Console	`miner.setGasPrice(number)`
RPC	`{"method": "miner_setGasPrice", "params": [number]}`

miner_start

Start the CPU mining process with the given number of threads and generate a new DAG if need be.

Client	Method invocation
Go	`miner.Start(threads *rpc.HexNumber) (bool, error)`
Console	`miner.start(number)`
RPC	`{"method": "miner_start", "params": [number]}`

miner_startAutoDAG

Pregenerate the DAG, this will allow for a seamless transition between the different epochs. If not enabled the miner will need to generate the DAG when a new epoch begins (each 30k blocks). This takes some time and will stop the miner until the DAG is generated.

Client	Method invocation
Go	`miner.StartAutoDAG() bool`
Console	`miner.startAutoDAG()`
RPC	`{"method": "miner_startAutoDAG", "params": [number]}`

miner_stop

Stop the CPU mining operation.

Client	Method invocation
Go	`miner.Stop() bool`
Console	`miner.stop()`
RPC	`{"method": "miner_stop", "params": []}`

miner_stopAutoDAG

Stop DAG pregeneration.

Client	Method invocation
Go	`miner.StopAutoDAG() bool`
Console	`miner.setGasPrice()`
RPC	`{"method": "miner_stopAutoDAG", "params": []}`

Personal

The personal API manages private keys in the key store.

personal_importRawKey

Imports the given unencrypted private key (hex string) into the key store, encrypting it with the passphrase.

Returns the address of the new account.

Client	Method invocation
Console	`personal.importRawKey(keydata, passphrase)`
RPC	`{"method": "personal_importRawKey", "params": [string, string]}`

personal_listAccounts

Returns all the Ethereum account addresses of all keys in the key store.

Client	Method invocation
Console	`personal.listAccounts`
RPC	`{"method": "personal_listAccounts", "params": []}`

Example

> personal.listAccounts
["0x5e97870f263700f46aa00d967821199b9bc5a120", "0x3d80b31a78c30fc628f20b2c89d7ddbf6e53cedc"]

personal_lockAccount

Removes the private key with given address from memory. The account can no longer be used to send transactions.

Client	Method invocation
Console	`personal.lockAccount(address)`
RPC	`{"method": "personal_lockAccount", "params": [string]}`

personal_newAccount

Generates a new private key and stores it in the key store directory. The key file is encrypted with the given passphrase. Returns the address of the new account.

At the geth console, newAccount will prompt for a passphrase when it is not supplied as the argument.

Client	Method invocation
Console	`personal.newAccount()`
RPC	`{"method": "personal_newAccount", "params": [string]}`

Example

> personal.newAccount()
Passphrase: 
Repeat passphrase: 
"0x5e97870f263700f46aa00d967821199b9bc5a120"

The passphrase can also be supplied as a string.

> personal.newAccount("h4ck3r")
"0x3d80b31a78c30fc628f20b2c89d7ddbf6e53cedc"

personal_unlockAccount

Decrypts the key with the given address from the key store.

Both passphrase and unlock duration are optional when using the JavaScript console. If the passphrase is not supplied as an argument, the console will prompt for the passphrase interactively.

The unencrypted key will be held in memory until the unlock duration expires. If the unlock duration defaults to 300 seconds. An explicit duration of zero seconds unlocks the key until geth exits.

The account can be used with eth_sign and eth_sendTransaction while it is unlocked.

Client	Method invocation
Console	`personal.unlockAccount(address, passphrase, duration)`
RPC	`{"method": "personal_unlockAccount", "params": [string, string, number]}`

Examples

> personal.unlockAccount("0x5e97870f263700f46aa00d967821199b9bc5a120")
Unlock account 0x5e97870f263700f46aa00d967821199b9bc5a120
Passphrase: 
true

Supplying the passphrase and unlock duration as arguments:

> personal.unlockAccount("0x5e97870f263700f46aa00d967821199b9bc5a120", "foo", 30)
true

If you want to type in the passphrase and stil override the default unlock duration, pass null as the passphrase.

> personal.unlockAccount("0x5e97870f263700f46aa00d967821199b9bc5a120", null, 30)
Unlock account 0x5e97870f263700f46aa00d967821199b9bc5a120
Passphrase: 
true

personal_sendTransaction

Validate the given passphrase and submit transaction.

The transaction is the same argument as for eth_sendTransaction and contains the from address. If the passphrase can be used to decrypt the private key belogging to tx.from the transaction is verified, signed and send onto the network. The account is not unlocked globally in the node and cannot be used in other RPC calls.

Client	Method invocation
Console	`personal.signAndSendTransaction(tx, passphrase)`
RPC	`{"method": "personal_sendTransaction", "params": [tx, string]}`

Examples

> var tx = {from: "0x391694e7e0b0cce554cb130d723a9d27458f9298", to: "0xafa3f8684e54059998bc3a7b0d2b0da075154d66", value: web3.toWei(1.23, "ether")}
undefined
> personal.sendTransaction(tx, "passphrase")
0x8474441674cdd47b35b875fd1a530b800b51a5264b9975fb21129eeb8c18582f

Txpool

The txpool API gives you access to several non-standard RPC methods to inspect the contents of the transaction pool containing all the currently pending transactions as well as the ones queued for future processing.

txpool_content

The content inspection property can be queried to list the exact details of all the transactions currently pending for inclusion in the next block(s), as well as the ones that are being scheduled for future execution only.

The result is an object with two fields pending and queued. Each of these fields are associative arrays, in which each entry maps an origin-address to a batch of scheduled transactions. These batches themselves are maps associating nonces with actual transactions.

Please note, there may be multiple transactions associated with the same account and nonce. This can happen if the user broadcast mutliple ones with varying gas allowances (or even complerely different transactions).

Client	Method invocation
Go	`txpool.Content() (map[string]map[string]map[string][]*RPCTransaction)`
Console	`txpool.content`
RPC	`{"method": "txpool_content"}`

Example

> txpool.content
{
  pending: {
    0x0216d5032f356960cd3749c31ab34eeff21b3395: {
      806: [{
        blockHash: "0x0000000000000000000000000000000000000000000000000000000000000000",
        blockNumber: null,
        from: "0x0216d5032f356960cd3749c31ab34eeff21b3395",
        gas: "0x5208",
        gasPrice: "0xba43b7400",
        hash: "0xaf953a2d01f55cfe080c0c94150a60105e8ac3d51153058a1f03dd239dd08586",
        input: "0x",
        nonce: "0x326",
        to: "0x7f69a91a3cf4be60020fb58b893b7cbb65376db8",
        transactionIndex: null,
        value: "0x19a99f0cf456000"
      }]
    },
    0x24d407e5a0b506e1cb2fae163100b5de01f5193c: {
      34: [{
        blockHash: "0x0000000000000000000000000000000000000000000000000000000000000000",
        blockNumber: null,
        from: "0x24d407e5a0b506e1cb2fae163100b5de01f5193c",
        gas: "0x44c72",
        gasPrice: "0x4a817c800",
        hash: "0xb5b8b853af32226755a65ba0602f7ed0e8be2211516153b75e9ed640a7d359fe",
        input: "0xb61d27f600000000000000000000000024d407e5a0b506e1cb2fae163100b5de01f5193c00000000000000000000000000000000000000000000000053444835ec580000000000000000000000000000000000000000000000000000000000000000006000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
        nonce: "0x22",
        to: "0x7320785200f74861b69c49e4ab32399a71b34f1a",
        transactionIndex: null,
        value: "0x0"
      }]
    }
  },
  queued: {
    0x976a3fc5d6f7d259ebfb4cc2ae75115475e9867c: {
      3: [{
        blockHash: "0x0000000000000000000000000000000000000000000000000000000000000000",
        blockNumber: null,
        from: "0x976a3fc5d6f7d259ebfb4cc2ae75115475e9867c",
        gas: "0x15f90",
        gasPrice: "0x4a817c800",
        hash: "0x57b30c59fc39a50e1cba90e3099286dfa5aaf60294a629240b5bbec6e2e66576",
        input: "0x",
        nonce: "0x3",
        to: "0x346fb27de7e7370008f5da379f74dd49f5f2f80f",
        transactionIndex: null,
        value: "0x1f161421c8e0000"
      }]
    },
    0x9b11bf0459b0c4b2f87f8cebca4cfc26f294b63a: {
      2: [{
        blockHash: "0x0000000000000000000000000000000000000000000000000000000000000000",
        blockNumber: null,
        from: "0x9b11bf0459b0c4b2f87f8cebca4cfc26f294b63a",
        gas: "0x15f90",
        gasPrice: "0xba43b7400",
        hash: "0x3a3c0698552eec2455ed3190eac3996feccc806970a4a056106deaf6ceb1e5e3",
        input: "0x",
        nonce: "0x2",
        to: "0x24a461f25ee6a318bdef7f33de634a67bb67ac9d",
        transactionIndex: null,
        value: "0xebec21ee1da40000"
      }],
      6: [{
        blockHash: "0x0000000000000000000000000000000000000000000000000000000000000000",
        blockNumber: null,
        from: "0x9b11bf0459b0c4b2f87f8cebca4cfc26f294b63a",
        gas: "0x15f90",
        gasPrice: "0x4a817c800",
        hash: "0xbbcd1e45eae3b859203a04be7d6e1d7b03b222ec1d66dfcc8011dd39794b147e",
        input: "0x",
        nonce: "0x6",
        to: "0x6368f3f8c2b42435d6c136757382e4a59436a681",
        transactionIndex: null,
        value: "0xf9a951af55470000"
      }, {
        blockHash: "0x0000000000000000000000000000000000000000000000000000000000000000",
        blockNumber: null,
        from: "0x9b11bf0459b0c4b2f87f8cebca4cfc26f294b63a",
        gas: "0x15f90",
        gasPrice: "0x4a817c800",
        hash: "0x60803251d43f072904dc3a2d6a084701cd35b4985790baaf8a8f76696041b272",
        input: "0x",
        nonce: "0x6",
        to: "0x8db7b4e0ecb095fbd01dffa62010801296a9ac78",
        transactionIndex: null,
        value: "0xebe866f5f0a06000"
      }],
    }
  }
}

txpool_inspect

The inspect inspection property can be queried to list a textual summary of all the transactions currently pending for inclusion in the next block(s), as well as the ones that are being scheduled for future execution only. This is a method specifically tailored to developers to quickly see the transactions in the pool and find any potential issues.

The result is an object with two fields pending and queued. Each of these fields are associative arrays, in which each entry maps an origin-address to a batch of scheduled transactions. These batches themselves are maps associating nonces with transactions summary strings.

Please note, there may be multiple transactions associated with the same account and nonce. This can happen if the user broadcast mutliple ones with varying gas allowances (or even complerely different transactions).

Client	Method invocation
Go	`txpool.Inspect() (map[string]map[string]map[string][]string)`
Console	`txpool.inspect`
RPC	`{"method": "txpool_inspect"}`

Example

> txpool.inspect
{
  pending: {
    0x26588a9301b0428d95e6fc3a5024fce8bec12d51: {
      31813: ["0x3375ee30428b2a71c428afa5e89e427905f95f7e: 0 wei + 500000 × 20000000000 gas"]
    },
    0x2a65aca4d5fc5b5c859090a6c34d164135398226: {
      563662: ["0x958c1fa64b34db746925c6f8a3dd81128e40355e: 1051546810000000000 wei + 90000 × 20000000000 gas"],
      563663: ["0x77517b1491a0299a44d668473411676f94e97e34: 1051190740000000000 wei + 90000 × 20000000000 gas"],
      563664: ["0x3e2a7fe169c8f8eee251bb00d9fb6d304ce07d3a: 1050828950000000000 wei + 90000 × 20000000000 gas"],
      563665: ["0xaf6c4695da477f8c663ea2d8b768ad82cb6a8522: 1050544770000000000 wei + 90000 × 20000000000 gas"],
      563666: ["0x139b148094c50f4d20b01caf21b85edb711574db: 1048598530000000000 wei + 90000 × 20000000000 gas"],
      563667: ["0x48b3bd66770b0d1eecefce090dafee36257538ae: 1048367260000000000 wei + 90000 × 20000000000 gas"],
      563668: ["0x468569500925d53e06dd0993014ad166fd7dd381: 1048126690000000000 wei + 90000 × 20000000000 gas"],
      563669: ["0x3dcb4c90477a4b8ff7190b79b524773cbe3be661: 1047965690000000000 wei + 90000 × 20000000000 gas"],
      563670: ["0x6dfef5bc94b031407ffe71ae8076ca0fbf190963: 1047859050000000000 wei + 90000 × 20000000000 gas"]
    },
    0x9174e688d7de157c5c0583df424eaab2676ac162: {
      3: ["0xbb9bc244d798123fde783fcc1c72d3bb8c189413: 30000000000000000000 wei + 85000 × 21000000000 gas"]
    },
    0xb18f9d01323e150096650ab989cfecd39d757aec: {
      777: ["0xcd79c72690750f079ae6ab6ccd7e7aedc03c7720: 0 wei + 1000000 × 20000000000 gas"]
    },
    0xb2916c870cf66967b6510b76c07e9d13a5d23514: {
      2: ["0x576f25199d60982a8f31a8dff4da8acb982e6aba: 26000000000000000000 wei + 90000 × 20000000000 gas"]
    },
    0xbc0ca4f217e052753614d6b019948824d0d8688b: {
      0: ["0x2910543af39aba0cd09dbb2d50200b3e800a63d2: 1000000000000000000 wei + 50000 × 1171602790622 gas"]
    },
    0xea674fdde714fd979de3edf0f56aa9716b898ec8: {
      70148: ["0xe39c55ead9f997f7fa20ebe40fb4649943d7db66: 1000767667434026200 wei + 90000 × 20000000000 gas"]
    }
  },
  queued: {
    0x0f6000de1578619320aba5e392706b131fb1de6f: {
      6: ["0x8383534d0bcd0186d326c993031311c0ac0d9b2d: 9000000000000000000 wei + 21000 × 20000000000 gas"]
    },
    0x5b30608c678e1ac464a8994c3b33e5cdf3497112: {
      6: ["0x9773547e27f8303c87089dc42d9288aa2b9d8f06: 50000000000000000000 wei + 90000 × 50000000000 gas"]
    },
    0x976a3fc5d6f7d259ebfb4cc2ae75115475e9867c: {
      3: ["0x346fb27de7e7370008f5da379f74dd49f5f2f80f: 140000000000000000 wei + 90000 × 20000000000 gas"]
    },
    0x9b11bf0459b0c4b2f87f8cebca4cfc26f294b63a: {
      2: ["0x24a461f25ee6a318bdef7f33de634a67bb67ac9d: 17000000000000000000 wei + 90000 × 50000000000 gas"],
      6: ["0x6368f3f8c2b42435d6c136757382e4a59436a681: 17990000000000000000 wei + 90000 × 20000000000 gas", "0x8db7b4e0ecb095fbd01dffa62010801296a9ac78: 16998950000000000000 wei + 90000 × 20000000000 gas"],
      7: ["0x6368f3f8c2b42435d6c136757382e4a59436a681: 17900000000000000000 wei + 90000 × 20000000000 gas"]
    }
  }
}

txpool_status

The status inspection property can be queried for the number of transactions currently pending for inclusion in the next block(s), as well as the ones that are being scheduled for future execution only.

The result is an object with two fields pending and queued, each of which is a counter representing the number of transactions in that particular state.

Client	Method invocation
Go	`txpool.Status() (map[string]*rpc.HexNumber)`
Console	`txpool.status`
RPC	`{"method": "txpool_status"}`

Example

> txpool.status
{
  pending: 10,
  queued: 7
}