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besu/docs/Reference/JSON-RPC-API-Methods.md

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description: Pantheon JSON-RPC API methods reference

JSON-RPC API Methods

!!! danger "Breaking Change in v0.8.3" From v0.8.3, incoming HTTP requests are only accepted from hostnames specified using the --host-whitelist option.

The following lists the Pantheon JSON-RPC API commands:

Admin Methods

!!! note The ADMIN API methods are not enabled by default. Use the --rpc-http-api or --rpc-ws-api options to enable the ADMIN API methods.

admin_addPeer

Adds a node to the list of tracked static nodes. The node attempts to maintain connectivity to tracked static nodes. If the remote connection goes down, the node attempts to reconnect every 60 seconds.

Parameters

string : Enode of peer to add

The enode is enode://<id>@<host:port> where:

  • <id> is the node public key excluding the initial 0x.
  • <host:port> is the host and port the node is listening on for P2P peer discovery. Specified by the --p2p-host and --p2p-port options.

!!! example If the --p2p-host or --p2p-port options are not specified and the node public key is 0xc35c3ec90a8a51fd5703594c6303382f3ae6b2ecb9589bab2c04b3794f2bc3fc2631dabb0c08af795787a6c004d8f532230ae6e9925cbbefb0b28b79295d615f
The enode URL is: enode://c35c3ec90a8a51fd5703594c6303382f3ae6b2ecb9589bab2c04b3794f2bc3fc2631dabb0c08af795787a6c004d8f532230ae6e9925cbbefb0b28b79295d615f@127.0.0.1:30303

Returns

result : boolean - true if peer added or false if peer already on list of static nodes.

!!! example bash tab="curl HTTP request" $ curl -X POST --data '{"jsonrpc":"2.0","method":"admin_addPeer","params":["enode://f59c0ab603377b6ec88b89d5bb41b98fc385030ab1e4b03752db6f7dab364559d92c757c13116ae6408d2d33f0138e7812eb8b696b2a22fe3332c4b5127b22a3@127.0.0.1:30304"],"id":1}' <JSON-RPC-http-endpoint:port> 

```bash tab="wscat WS request"
{"jsonrpc":"2.0","method":"admin_addPeer","params":["enode://f59c0ab603377b6ec88b89d5bb41b98fc385030ab1e4b03752db6f7dab364559d92c757c13116ae6408d2d33f0138e7812eb8b696b2a22fe3332c4b5127b22a3@127.0.0.1:30304"],"id":1}
```

```json tab="JSON result"
{
  "jsonrpc": "2.0",
  "id": 1,
  "result": true
}
```

admin_peers

Returns networking information about connected remote nodes.

Parameters

None

Returns

result : array of objects - Object returned for each remote node.

Properties of the remote node object are:

  • version - P2P protocol version
  • name - Client name
  • caps - List of Ethereum sub-protocol capabilities
  • network - Local and remote addresses established at time of bonding with the peer. The remote address may not match the hex value for port. The remote address depends on which node initiated the connection.
  • port - Port on the remote node on which P2P peer discovery is listening
  • id - Node public key. Excluding the 0x prefix, the node public key is the ID in the enode URL enode://<id ex 0x>@<host>:<port>.

!!! example bash tab="curl HTTP request" $ curl -X POST --data '{"jsonrpc":"2.0","method":"admin_peers","params":[],"id":1}' <JSON-RPC-http-endpoint:port> 

```bash tab="wscat WS request"
{"jsonrpc":"2.0","method":"admin_peers","params":[],"id":1}
```

```json tab="JSON result"
{
  "jsonrpc" : "2.0",
  "id" : 1,
  "result" : [ 
    {
      "version": "0x5",
      "name": "Parity-Ethereum/v2.3.0-nightly-1c2e121-20181116/x86_64-linux-gnu/rustc1.30.0",
      "caps": [
         "eth/62",
         "eth/63",
         "par/1",
         "par/2",
         "par/3",
         "pip/1"
      ],
       "network": {
          "localAddress": "192.168.1.229:50115",
          "remoteAddress": "168.61.153.255:40303"
       },
       "port": "0x9d6f",
       "id": "0xea26ccaf0867771ba1fec32b3589c0169910cb4917017dba940efbef1d2515ce864f93a9abc846696ebad40c81de7c74d7b2b46794a71de8f95a0d019f494ff3"
    } 
  ]
}
```

Web3 Methods

web3_clientVersion

Returns the current client version.

Parameters

None

Returns

result : string - Current client version.

!!! example bash tab="curl HTTP request" $ curl -X POST --data '{"jsonrpc":"2.0","method":"web3_clientVersion","params":[],"id":1}' <JSON-RPC-http-endpoint:port> 

```bash tab="wscat WS request"
{"jsonrpc":"2.0","method":"web3_clientVersion","params":[],"id":1}
```

```json tab="JSON result"
{
  "jsonrpc" : "2.0",
  "id" : 53,
  "result" : "pantheon/1.0.0"
}
```

web3_sha3

Returns a SHA3 hash of the specified data. The result value is a Keccak-256 hash, not the standardized SHA3-256.

Parameters

DATA - Data to convert to a SHA3 hash.

Returns

result (DATA) - SHA3 result of the input data.

!!! example bash tab="curl HTTP request" $ curl -X POST --data '{"jsonrpc":"2.0","method":"web3_sha3","params":["0x68656c6c6f20776f726c00"],"id":53}' <JSON-RPC-http-endpoint:port> 

```bash tab="wscat WS request"
{"jsonrpc":"2.0","method":"web3_sha3","params":["0x68656c6c6f20776f726c00"],"id":53}
```

```json tab="JSON result"
{
  "jsonrpc" : "2.0",
  "id" : 53,
  "result" : "0x5e39a0a66544c0668bde22d61c47a8710000ece931f13b84d3b2feb44ec96d3f"
}
```

Net Methods

net_version

Returns the current chain ID.

Parameters

None

Returns

result : string - Current chain ID.

  • 1 - Ethereum Mainnet
  • 2 - Morden Testnet (deprecated)
  • 3 - Ropsten Testnet
  • 4 - Rinkeby Testnet
  • 42 - Kovan Testnet

!!! example bash tab="curl HTTP request" $ curl -X POST --data ''{"jsonrpc":"2.0","method":"net_version","params":[],"id":53}' <JSON-RPC-http-endpoint:port> 

```bash tab="wscat WS request"
$ wscat -c <JSON-RPC-ws-endpoint:port>
connected (press CTRL+C to quit)
> '{"jsonrpc":"2.0","method":"net_version","params":[],"id":53}
```

```json tab="JSON result for Mainnet"
{
  "jsonrpc" : "2.0",
  "id" : 51,
  "result" : "1"
}
```    

```json tab="JSON result for Ropsten"
{
  "jsonrpc" : "2.0",
  "id" : 53,
  "result" : "3"
}
```

net_listening

Indicates whether the client is actively listening for network connections.

Parameters

None

Returns

result (BOOLEAN) - true if the client is actively listening for network connections; otherwise false.

!!! example bash tab="curl HTTP request" $ curl -X POST --data '{"jsonrpc":"2.0","method":"net_listening","params":[],"id":53}' <JSON-RPC-http-endpoint:port> 

```bash tab="wscat WS request"
{"jsonrpc":"2.0","method":"net_listening","params":[],"id":53}
```

```json tab="JSON result"
{
  "jsonrpc" : "2.0",
  "id" : 53,
  "result" : true
}
```

net_peerCount

Returns the number of peers currently connected to the client.

Parameters

None

Returns

result : integer - Number of connected peers in hexadecimal.

!!! example bash tab="curl HTTP request" $ curl -X POST --data '{"jsonrpc":"2.0","method":"net_peerCount","params":[],"id":53}' <JSON-RPC-http-endpoint:port> 

```bash tab="wscat WS request"
{"jsonrpc":"2.0","method":"net_peerCount","params":[],"id":53}
```

```json tab="JSON result"
{
  "jsonrpc" : "2.0",
  "id" : 53,
  "result" : "0x5"
}
```

Eth Methods

eth_syncing

Returns an object with data about the synchronization status, or false if not synchronizing.

Parameters

None

Returns

result : Object|Boolean - Object with synchronization status data or false, when not synchronizing:

  • startingBlock : quantity - Index of the highest block on the blockchain when the network synchronization starts.

    If you start with an empty blockchain, the starting block is the beginning of the blockchain (startingBlock = 0).

    If you import a block file using pantheon import <block-file>, the synchronization starts at the head of the blockchain, and the starting block is the next block synchronized. For example, if you imported 1000 blocks, the import would include blocks 0 to 999, so in that case startingBlock = 1000.

  • currentBlock : quantity - Index of the latest block (also known as the best block) for the current node. This is the same index that eth_blockNumber returns.

  • highestBlock: quantity - Index of the highest known block in the peer network (that is, the highest block so far discovered among peer nodes). This is the same value as currentBlock if the current node has no peers.

!!! example bash tab="curl HTTP request" $ curl -X POST --data '{"jsonrpc":"2.0","method":"eth_syncing","params":[],"id":51}' <JSON-RPC-http-endpoint:port> 

```bash tab="wscat WS request"
{"jsonrpc":"2.0","method":"eth_syncing","params":[],"id":51}
```

```json tab="JSON result"
{
  "jsonrpc" : "2.0",
  "id" : 51,
  "result" : {
    "startingBlock" : "0x5a0",
    "currentBlock" : "0xad9",
    "highestBlock" : "0xad9"
  }
}
```

eth_chainId

Returns the chain ID.

Parameters

None

Returns

result : quantity - Chain ID in hexadecimal.

!!! example bash tab="curl HTTP request" $ curl -X POST --data '{"jsonrpc":"2.0","method":"eth_chainId","params":[],"id":51}' <JSON-RPC-http-endpoint:port> 

```bash tab="wscat WS request"
{"jsonrpc":"2.0","method":"eth_chainId","params":[],"id":51}
```

```json tab="JSON result"
{
  "jsonrpc" : "2.0",
  "id" : 51,
  "result" : "0x7e2"
}
```

eth_coinbase

Returns the client coinbase address. The coinbase address is the account to which mining rewards are paid.

To set a coinbase address, start Pantheon with the --miner-coinbase option set to a valid Ethereum account address. You can get the Ethereum account address from a client such as MetaMask or Etherscan. For example:

!!!example bash pantheon --miner-coinbase="0xfe3b557e8fb62b89f4916b721be55ceb828dbd73" --rpc-http-enabled

Parameters

None

Returns

result : data - Coinbase address.

!!! example bash tab="curl HTTP request" $ curl -X POST --data '{"jsonrpc":"2.0","method":"eth_coinbase","params":[],"id":53}' <JSON-RPC-http-endpoint:port> 

```bash tab="wscat WS request"
{"jsonrpc":"2.0","method":"eth_coinbase","params":[],"id":53}
```

```json tab="JSON result"
{
  "jsonrpc" : "2.0",
  "id" : 53,
  "result" : "0xfe3b557e8fb62b89f4916b721be55ceb828dbd73"
}
```

eth_mining

Indicates whether the client is actively mining new blocks. Mining is paused while the client synchronizes with the network regardless of command settings or methods called.

Parameters

None

Returns

result (BOOLEAN) - true if the client is actively mining new blocks; otherwise false.

!!! example bash tab="curl HTTP request" $ curl -X POST --data '{"jsonrpc":"2.0","method":"eth_mining","params":[],"id":53}' <JSON-RPC-http-endpoint:port> 

```bash tab="wscat WS request"
{"jsonrpc":"2.0","method":"eth_mining","params":[],"id":53}
```

```json tab="JSON result"
{
  "jsonrpc" : "2.0",
  "id" : 53,
  "result" : true
}
```

eth_hashrate

Returns the number of hashes per second with which the node is mining.

Parameters

None

Returns

result : quantity - Number of hashes per second

!!! example bash tab="curl HTTP request" $ curl -X POST --data '{"jsonrpc":"2.0","method":"eth_hashrate","params":[],"id":1}' <JSON-RPC-http-endpoint:port> 

```bash tab="wscat WS request"
{"jsonrpc":"2.0","method":"eth_hashrate","params":[],"id":1}
```

```json tab="JSON result"
{
    "jsonrpc": "2.0",
    "id": 1,
    "result": "0x12b"
}
```

eth_gasPrice

Returns the current gas unit price in wei.

Parameters

None

Returns

result : quantity - Current gas unit price in wei as a hexadecimal value.

!!! example bash tab="curl HTTP request" $ curl -X POST --data '{"jsonrpc":"2.0","method":"eth_gasPrice","params":[],"id":53}' <JSON-RPC-http-endpoint:port> 

```bash tab="wscat WS request"
{"jsonrpc":"2.0","method":"eth_gasPrice","params":[],"id":53}
```

```json tab="JSON result"
{
  "jsonrpc" : "2.0",
  "id" : 53,
  "result" : "0x3e8"
}
```

eth_accounts

Returns a list of account addresses that the client owns.

!!!note This method returns an empty object because Pantheon does not support account management.

Parameters

None

Returns

Array of data : List of 20-byte account addresses owned by the client.

!!! example bash tab="curl HTTP request" $ curl -X POST --data '{"jsonrpc":"2.0","method":"eth_accounts","params":[],"id":53}' <JSON-RPC-http-endpoint:port> 

```bash tab="wscat WS request"
{"jsonrpc":"2.0","method":"eth_accounts","params":[],"id":53}
```

```json tab="JSON result"
{
  "jsonrpc" : "2.0",
  "id" : 53,
  "result" : [ ]
}
```

eth_blockNumber

Returns the index of the current block the client is processing.

Parameters

None

Returns

result : QUANTITY - Hexadecimal integer representing the 0-based index of the block that the client is currently processing.

!!! example bash tab="curl HTTP request" $ curl -X POST --data '{"jsonrpc":"2.0","method":"eth_blockNumber","params":[],"id":51}' <JSON-RPC-http-endpoint:port> 

```bash tab="wscat WS request"
{"jsonrpc":"2.0","method":"eth_blockNumber","params":[],"id":51}
```

```json tab="JSON result"
{
  "jsonrpc" : "2.0",
  "id" : 51,
  "result" : "0x2377"
}
```

eth_getBalance

Returns the account balance of the specified address.

Parameters

DATA - 20-byte account address from which to retrieve the balance.

QUANTITY|TAG - Integer representing a block number or one of the string tags latest, earliest, or pending, as described in Block Parameter.

Returns

result : QUANTITY - Integer value of the current balance in wei.

!!! example bash tab="curl HTTP request" $ curl -X POST --data '{"jsonrpc":"2.0","method":"eth_getBalance","params":["0xdd37f65db31c107f773e82a4f85c693058fef7a9", "latest"],"id":53}' <JSON-RPC-http-endpoint:port> 

```bash tab="wscat WS request"
{"jsonrpc":"2.0","method":"eth_getBalance","params":["0xdd37f65db31c107f773e82a4f85c693058fef7a9", "latest"],"id":53}
```

```json tab="JSON result"
{
  "jsonrpc" : "2.0",
  "id" : 53,
  "result" : "0x0"
}
```

eth_getStorageAt

Returns the value of a storage position at a specified address.

Parameters

DATA - A 20-byte storage address.

QUANTITY - Integer index of the storage position.

QUANTITY|TAG - Integer representing a block number or one of the string tags latest, earliest, or pending, as described in Block Parameter.

Returns

result : DATA - The value at the specified storage position.

!!! example Calculating the correct position depends on the storage you want to retrieve.

```bash tab="curl HTTP request"
$ curl -X POST --data '{"jsonrpc":"2.0","method": "eth_getStorageAt","params": ["0x‭3B3F3E‬","0x0","latest"],"id": 53}' <JSON-RPC-http-endpoint:port>
```

```bash tab="wscat WS request"
{"jsonrpc":"2.0","method": "eth_getStorageAt","params": ["0x‭3B3F3E‬","0x0","latest"],"id": 53}
```

```json tab="JSON result"
{
  "jsonrpc" : "2.0",
  "id" : 53,
  "result" : "0x0000000000000000000000000000000000000000000000000000000000000000"
}
```

eth_getTransactionCount

Returns the number of transactions sent from a specified address.

Parameters

DATA - 20-byte account address.

QUANTITY|TAG - Integer representing a block number or one of the string tags latest, earliest, or pending, as described in Block Parameter.

Returns

result : QUANTITY - Integer representing the number of transactions sent from the specified address.

!!! example bash tab="curl HTTP request" $ curl -X POST --data '{"jsonrpc":"2.0","method":"eth_getTransactionCount","params":["0xc94770007dda54cF92009BFF0dE90c06F603a09f","latest"],"id":1}' <JSON-RPC-http-endpoint:port> 

```bash tab="wscat WS request"
{"jsonrpc":"2.0","method":"eth_getTransactionCount","params":["0xc94770007dda54cF92009BFF0dE90c06F603a09f","latest"],"id":1}
```

```json tab="JSON result"
{
  "jsonrpc" : "2.0",
  "id" : 1,
  "result" : "0x1"
}
```

eth_getBlockTransactionCountByHash

Returns the number of transactions in the block matching the given block hash.

Parameters

DATA - 32-byte block hash.

Returns

result : QUANTITY - Integer representing the number of transactions in the specified block.

!!! example bash tab="curl HTTP request" $ curl -X POST --data '{"jsonrpc":"2.0","method":"eth_getBlockTransactionCountByHash","params":["0xb903239f8543d04b5dc1ba6579132b143087c68db1b2168786408fcbce568238"],"id":53}' <JSON-RPC-http-endpoint:port> 

```bash tab="wscat WS request"
{"jsonrpc":"2.0","method":"eth_getBlockTransactionCountByHash","params":["0xb903239f8543d04b5dc1ba6579132b143087c68db1b2168786408fcbce568238"],"id":53}
```

```json tab="JSON result"
{
  "jsonrpc" : "2.0",
  "id" : 53,
  "result" : null
}
```

eth_getBlockTransactionCountByNumber

Returns the number of transactions in a block matching the specified block number.

Parameters

QUANTITY|TAG - Integer representing a block number or one of the string tags latest, earliest, or pending, as described in Block Parameter.

Returns

result : QUANTITY - Integer representing the number of transactions in the specified block.

!!! example bash tab="curl HTTP request" $ curl -X POST --data '{"jsonrpc":"2.0","method":"eth_getBlockTransactionCountByNumber","params":["0xe8"],"id":51}' <JSON-RPC-http-endpoint:port> 

```bash tab="wscat WS request"
{"jsonrpc":"2.0","method":"eth_getBlockTransactionCountByNumber","params":["0xe8"],"id":51}
```

```json tab="JSON result"
{
  "jsonrpc" : "2.0",
  "id" : 51,
  "result" : "0x8"
}
```

eth_getUncleCountByBlockHash

Returns the number of uncles in a block from a block matching the given block hash.

Parameters

DATA - 32-byte block hash.

Returns

result : QUANTITY - Integer representing the number of uncles in the specified block.

!!! example bash tab="curl HTTP request" $ curl -X POST --data '{"jsonrpc":"2.0","method":"eth_getUncleCountByBlockHash","params":["0xb903239f8543d04b5dc1ba6579132b143087c68db1b2168786408fcbce568238"],"id":1}' <JSON-RPC-http-endpoint:port> 

```bash tab="wscat WS request"
{"jsonrpc":"2.0","method":"eth_getUncleCountByBlockHash","params":["0xb903239f8543d04b5dc1ba6579132b143087c68db1b2168786408fcbce568238"],"id":1}
```

```json tab="JSON result"
{
  "jsonrpc" : "2.0",
  "id" : 1,
  "result" : null
}
```

eth_getUncleCountByBlockNumber

Returns the number of uncles in a block matching the specified block number.

Parameters

QUANTITY|TAG - Integer representing either the 0-based index of the block within the blockchain, or one of the string tags latest, earliest, or pending, as described in Block Parameter.

Returns

result : QUANTITY - Integer representing the number of uncles in the specified block.

!!! example bash tab="curl HTTP request" $ curl -X POST --data '{"jsonrpc":"2.0","method":"eth_getUncleCountByBlockNumber","params":["0xe8"],"id":1}' <JSON-RPC-http-endpoint:port> 

```bash tab="wscat WS request"
{"jsonrpc":"2.0","method":"eth_getUncleCountByBlockNumber","params":["0xe8"],"id":1}
```

```json tab="JSON result"
{
  "jsonrpc" : "2.0",
  "id" : 1,
  "result" : "0x1"
}
```

eth_getCode

Returns the code of the smart contract at the specified address. Compiled smart contract code is stored as a hexadecimal value.

Parameters

DATA - 20-byte contract address.

QUANTITY|TAG - Integer representing a block number or one of the string tags latest, earliest, or pending, as described in Block Parameter.

Returns

result : DATA - Code stored at the specified address.

!!! example bash tab="curl HTTP request" $ curl -X POST --data '{"jsonrpc":"2.0","method":"eth_getCode","params":["0xa50a51c09a5c451c52bb714527e1974b686d8e77", "latest"],"id":53}' <JSON-RPC-http-endpoint:port> 

```bash tab="wscat WS request"
{"jsonrpc":"2.0","method":"eth_getCode","params":["0xa50a51c09a5c451c52bb714527e1974b686d8e77", "latest"],"id":53}
```

```json tab="JSON result"
{
    "jsonrpc": "2.0",
    "id": 53,
    "result": "0x60806040526004361060485763ffffffff7c01000000000000000000000000000000000000000000000000000000006000350416633fa4f2458114604d57806355241077146071575b600080fd5b348015605857600080fd5b50605f6088565b60408051918252519081900360200190f35b348015607c57600080fd5b506086600435608e565b005b60005481565b60008190556040805182815290517f199cd93e851e4c78c437891155e2112093f8f15394aa89dab09e38d6ca0727879181900360200190a1505600a165627a7a723058209d8929142720a69bde2ab3bfa2da6217674b984899b62753979743c0470a2ea70029"
}
```

eth_sendRawTransaction

Sends a signed transaction. A transaction can send ether, deploy a contract, or interact with a contract.

You can interact with contracts using eth_sendRawTransaction or eth_call.

To avoid exposing your private key, create signed transactions offline and send the signed transaction data using eth_sendRawTransaction.

!!!important Pantheon does not implement eth_sendTransaction.

Parameters

data - Signed transaction serialized to hexadecimal format. For example:

params: ["0xf869018203e882520894f17f52151ebef6c7334fad080c5704d77216b732881bc16d674ec80000801ba02da1c48b670996dcb1f447ef9ef00b33033c48a4fe938f420bec3e56bfd24071a062e0aa78a81bf0290afbc3a9d8e9a068e6d74caa66c5e0fa8a46deaae96b0833"]

!!! note Creating and Sending Transactions includes examples of creating signed transactions using the web3.js library.

Returns

result : data - 32-byte transaction hash

!!! example bash tab="curl HTTP request" $ curl -X POST --data '{"jsonrpc":"2.0","method":"eth_sendRawTransaction","params":["0xf869018203e882520894f17f52151ebef6c7334fad080c5704d77216b732881bc16d674ec80000801ba02da1c48b670996dcb1f447ef9ef00b33033c48a4fe938f420bec3e56bfd24071a062e0aa78a81bf0290afbc3a9d8e9a068e6d74caa66c5e0fa8a46deaae96b0833"],"id":1}' <JSON-RPC-http-endpoint:port> 

```bash tab="wscat WS request"
{"jsonrpc":"2.0","method":"eth_sendRawTransaction","params":["0xf869018203e882520894f17f52151ebef6c7334fad080c5704d77216b732881bc16d674ec80000801ba02da1c48b670996dcb1f447ef9ef00b33033c48a4fe938f420bec3e56bfd24071a062e0aa78a81bf0290afbc3a9d8e9a068e6d74caa66c5e0fa8a46deaae96b0833"],"id":1}
```

```json tab="JSON result"
{
  "id":1,
  "jsonrpc": "2.0",
  "result": "0xe670ec64341771606e55d6b4ca35a1a6b75ee3d5145a99d05921026d1527331"
}
```

eth_call

Invokes a contract function locally and does not change the state of the blockchain.

You can interact with contracts using eth_sendRawTransaction or eth_call.

Parameters

OBJECT - Transaction call object.

QUANTITY|TAG - Integer representing a block number or one of the string tags latest, earliest, or pending, as described in Block Parameter.

Returns

result (DATA) - Return value of the executed contract.

!!! example bash tab="curl HTTP request" $ curl -X POST --data '{"jsonrpc":"2.0","method":"eth_call","params":[{"to":"0x69498dd54bd25aa0c886cf1f8b8ae0856d55ff13","value":"0x1"}, "latest"],"id":53}' <JSON-RPC-http-endpoint:port> 

```bash tab="wscat WS request"
{"jsonrpc":"2.0","method":"eth_call","params":[{"to":"0x69498dd54bd25aa0c886cf1f8b8ae0856d55ff13","value":"0x1"}, "latest"],"id":53}
```

```json tab="JSON result"
{
    "jsonrpc": "2.0",
    "id": 53,
    "result": "0x"
}
```

eth_estimateGas

Returns an estimate of how much gas is needed for a transaction to complete. The estimation process does not use gas and the transaction is not added to the blockchain. The resulting estimate can be greater than the amount of gas that the transaction actually uses, for various reasons including EVM mechanics and node performance.

The eth_estimateGas call does not send a transaction. You must make a subsequent call to eth_sendRawTransaction to execute the transaction.

Parameters

The transaction call object parameters are the same as those for eth_call, except that in eth_estimateGas, all fields are optional. Setting a gas limit is irrelevant to the estimation process (unlike transactions, in which gas limits apply).

OBJECT - Transaction call object.

Returns

result : quantity - Amount of gas used.

The following example returns an estimate of 21000 wei (0x5208) for the transaction.

!!! example bash tab="curl HTTP request" $ curl -X POST --data '{"jsonrpc":"2.0","method":"eth_estimateGas","params":[{"from":"0xFE3B557E8Fb62b89F4916B721be55cEb828dBd73","to":"0x44Aa93095D6749A706051658B970b941c72c1D53","value":"0x1"}],"id":53}' <JSON-RPC-endpoint:port> 

```bash tab="wscat WS request"
{"jsonrpc":"2.0","method":"eth_estimateGas","params":[{"from":"0xFE3B557E8Fb62b89F4916B721be55cEb828dBd73","to":"0x44Aa93095D6749A706051658B970b941c72c1D53","value":"0x1"}],"id":53}
```

```json tab="JSON result"
{
  "jsonrpc" : "2.0",
  "id" : 53,
  "result" : "0x5208"
}
```

The following example request estimates the cost of deploying a simple storage smart contract to the network. The data field contains the hash of the compiled contract to be deployed. (You can obtain the compiled contract hash from your IDE; for example, Remix > Compile tab > details > WEB3DEPLOY.) The result is 113355 wei.

Returns

!!! example bash tab="curl HTTP request" $ curl -X POST \ http://localhost:8545 \ -H 'Content-Type: application/json' \ -d '{ "jsonrpc": "2.0", "method": "eth_estimateGas", "params": [{ "from": "0x8bad598904ec5d93d07e204a366d084a80c7694e", "data": "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" }], "id": 1 }'

!!! example json tab="JSON result" { "jsonrpc": "2.0", "id": 1, "result": "0x1bacb" }

eth_getBlockByHash

Returns information about the block by hash.

Parameters

DATA - 32-byte hash of a block.

Boolean - If true, returns the full transaction objects; if false, returns the transaction hashes.

Returns

result : OBJECT - Block object , or null when no block is found.

!!! example bash tab="curl HTTP request" $ curl -X POST --data '{"jsonrpc":"2.0","method":"eth_getBlockByHash","params":["0x16b69965a5949262642cfb5e86368ddbbe57ab9f17d999174a65fd0e66580d8f", false],"id":53}' <JSON-RPC-http-endpoint:port> 

```bash tab="wscat WS request"
{"jsonrpc":"2.0","method":"eth_getBlockByHash","params":["0x16b69965a5949262642cfb5e86368ddbbe57ab9f17d999174a65fd0e66580d8f", false],"id":53}
```

```json tab="JSON result"
{
  "jsonrpc" : "2.0",
  "id" : 53,
  "result" : {
    "number" : "0x7",
    "hash" : "0x16b69965a5949262642cfb5e86368ddbbe57ab9f17d999174a65fd0e66580d8f",
    "parentHash" : "0xe9bd4b277983580ef0eabad6011891f8b6aff9381a78bd1c4faca374a48b3e09",
    "nonce" : "0x46acb59e85b5bb6d",
    "sha3Uncles" : "0x1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347",
    "logsBloom" : "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
    "transactionsRoot" : "0x7aa0913c235f272eb6ed6ab74ba5a057e0a62c1c1d1dbccfd971221e6b6e83a3",
    "stateRoot" : "0xfaf6520d6e3d24107a4309855593341ab87a1744dbb6eea4e709b92e9c9107ca",
    "receiptsRoot" : "0x056b23fbba480696b65fe5a59b8f2148a1299103c4f57df839233af2cf4ca2d2",
    "miner" : "0xfe3b557e8fb62b89f4916b721be55ceb828dbd73",
    "difficulty" : "0x5",
    "totalDifficulty" : "0x10023",
    "extraData" : "0x",
    "size" : "0x270",
    "gasLimit" : "0x1000000",
    "gasUsed" : "0x5208",
    "timestamp" : "0x5bbbe99f",
    "uncles" : [ ],
    "transactions" : [ "0x2cc6c94c21685b7e0f8ddabf277a5ccf98db157c62619cde8baea696a74ed18e" ]
  }
}
```

eth_getBlockByNumber

Returns information about a block by block number.

Parameters

QUANTITY|TAG - Integer representing a block number or one of the string tags latest, earliest, or pending, as described in Block Parameter.

Boolean - If true, returns the full transaction objects; if false, returns only the hashes of the transactions.

Returns

result : OBJECT - Block object , or null when no block is found.

!!! example bash tab="curl HTTP request" $ curl -X POST --data '{"jsonrpc":"2.0","method":"eth_getBlockByNumber","params":["0x64", true],"id":1}' <JSON-RPC-http-endpoint:port> 

```bash tab="wscat WS request"
{"jsonrpc":"2.0","method":"eth_getBlockByNumber","params":["0x64", true],"id":1}
```

```json tab="JSON result"
{
  "jsonrpc" : "2.0",
  "id" : 1,
  "result" : {
    "number" : "0x64",
    "hash" : "0xdfe2e70d6c116a541101cecbb256d7402d62125f6ddc9b607d49edc989825c64",
    "parentHash" : "0xdb10afd3efa45327eb284c83cc925bd9bd7966aea53067c1eebe0724d124ec1e",
    "nonce" : "0x37129c7f29a9364b",
    "sha3Uncles" : "0x1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347",
    "logsBloom" : "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
    "transactionsRoot" : "0x56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
    "stateRoot" : "0x90c25f6d7fddeb31a6cc5668a6bba77adbadec705eb7aa5a51265c2d1e3bb7ac",
    "receiptsRoot" : "0x56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
    "miner" : "0xbb7b8287f3f0a933474a79eae42cbca977791171",
    "difficulty" : "0x42be722b6",
    "totalDifficulty" : "0x19b5afdc486",
    "extraData" : "0x476574682f4c5649562f76312e302e302f6c696e75782f676f312e342e32",
    "size" : "0x21e",
    "gasLimit" : "0x1388",
    "gasUsed" : "0x0",
    "timestamp" : "0x55ba43eb",
    "uncles" : [ ],
    "transactions" : [ ]
  }
}
```

eth_getTransactionByHash

Returns transaction information for the specified transaction hash.

Parameters

DATA - 32-byte transaction hash.

Returns

Object - Transaction object, or null when no transaction is found.

!!! example bash tab="curl HTTP request" $ curl -X POST --data '{"jsonrpc":"2.0","method":"eth_getTransactionByHash","params":["0xa52be92809541220ee0aaaede6047d9a6c5d0cd96a517c854d944ee70a0ebb44"],"id":53}' <JSON-RPC-http-endpoint:port> 

```bash tab="wscat WS request"
{"jsonrpc":"2.0","method":"eth_getTransactionByHash","params":["0xa52be92809541220ee0aaaede6047d9a6c5d0cd96a517c854d944ee70a0ebb44"],"id":53}
```

```json tab="JSON result"
{
  "jsonrpc" : "2.0",
  "id" : 53,
  "result" : {
    "blockHash" : "0x510efccf44a192e6e34bcb439a1947e24b86244280762cbb006858c237093fda",
    "blockNumber" : "0x422",
    "from" : "0xfe3b557e8fb62b89f4916b721be55ceb828dbd73",
    "gas" : "0x5208",
    "gasPrice" : "0x3b9aca00",
    "hash" : "0xa52be92809541220ee0aaaede6047d9a6c5d0cd96a517c854d944ee70a0ebb44",
    "input" : "0x",
    "nonce" : "0x1",
    "to" : "0x627306090abab3a6e1400e9345bc60c78a8bef57",
    "transactionIndex" : "0x0",
    "value" : "0x4e1003b28d9280000",
    "v" : "0xfe7",
    "r" : "0x84caf09aefbd5e539295acc67217563438a4efb224879b6855f56857fa2037d3",
    "s" : "0x5e863be3829812c81439f0ae9d8ecb832b531d651fb234c848d1bf45e62be8b9"
  }
}
```

eth_getTransactionByBlockHashAndIndex

Returns transaction information for the specified block hash and transaction index position.

Parameters

DATA - 32-byte hash of a block.

QUANTITY - Integer representing the transaction index position.

Returns

Object - Transaction object, or null when no transaction is found.

!!! example bash tab="curl HTTP request" $ curl -X POST --data '{"jsonrpc":"2.0","method":"eth_getTransactionByBlockHashAndIndex","params":["0xbf137c3a7a1ebdfac21252765e5d7f40d115c2757e4a4abee929be88c624fdb7", "0x2"], "id":1}' <JSON-RPC-http-endpoint:port> 

```bash tab="wscat WS request"
{"jsonrpc":"2.0","method":"eth_getTransactionByBlockHashAndIndex","params":["0xbf137c3a7a1ebdfac21252765e5d7f40d115c2757e4a4abee929be88c624fdb7", "0x2"], "id":1}
```

```json tab="JSON result"
{
  "jsonrpc" : "2.0",
  "id" : 1,
  "result" : {
    "blockHash" : "0xbf137c3a7a1ebdfac21252765e5d7f40d115c2757e4a4abee929be88c624fdb7",
    "blockNumber" : "0x1442e",
    "from" : "0x70c9217d814985faef62b124420f8dfbddd96433",
    "gas" : "0x3d090",
    "gasPrice" : "0x57148a6be",
    "hash" : "0xfc766a71c406950d4a4955a340a092626c35083c64c7be907060368a5e6811d6",
    "input" : "0x51a34eb8000000000000000000000000000000000000000000000029b9e659e41b780000",
    "nonce" : "0x2cb2",
    "to" : "0xcfdc98ec7f01dab1b67b36373524ce0208dc3953",
    "transactionIndex" : "0x2",
    "value" : "0x0",
    "v" : "0x2a",
    "r" : "0xa2d2b1021e1428740a7c67af3c05fe3160481889b25b921108ac0ac2c3d5d40a",
    "s" : "0x63186d2aaefe188748bfb4b46fb9493cbc2b53cf36169e8501a5bc0ed941b484"
  }
 }
```

eth_getTransactionByBlockNumberAndIndex

Returns transaction information for the specified block number and transaction index position.

Parameters

QUANTITY|TAG - Integer representing a block number or one of the string tags latest, earliest, or pending, as described in Block Parameter.

QUANTITY - The transaction index position.

Returns

Object - Transaction object, or null when no transaction is found.

!!!note Your node must be synchronized to at least the block containing the transaction for the request to return it.

!!! example This request returns the third transaction in the 82990 block on the Ropsten testnet. You can also view this block and transaction on Etherscan.

```bash tab="curl HTTP request"
$ curl -X POST --data '{"jsonrpc":"2.0","method":"eth_getTransactionByBlockNumberAndIndex","params":["82990", "0x2"], "id":1}' <JSON-RPC-http-endpoint:port>
```

```bash tab="wscat WS request"
{"jsonrpc":"2.0","method":"eth_getTransactionByBlockNumberAndIndex","params":["82990", "0x2"], "id":1}
```

```json tab="JSON result"
{
  "jsonrpc" : "2.0",
  "id" : 1,
  "result" : {
    "blockHash" : "0xbf137c3a7a1ebdfac21252765e5d7f40d115c2757e4a4abee929be88c624fdb7",
    "blockNumber" : "0x1442e",
    "from" : "0x70c9217d814985faef62b124420f8dfbddd96433",
    "gas" : "0x3d090",
    "gasPrice" : "0x57148a6be",
    "hash" : "0xfc766a71c406950d4a4955a340a092626c35083c64c7be907060368a5e6811d6",
    "input" : "0x51a34eb8000000000000000000000000000000000000000000000029b9e659e41b780000",
    "nonce" : "0x2cb2",
    "to" : "0xcfdc98ec7f01dab1b67b36373524ce0208dc3953",
    "transactionIndex" : "0x2",
    "value" : "0x0",
    "v" : "0x2a",
    "r" : "0xa2d2b1021e1428740a7c67af3c05fe3160481889b25b921108ac0ac2c3d5d40a",
    "s" : "0x63186d2aaefe188748bfb4b46fb9493cbc2b53cf36169e8501a5bc0ed941b484"
  }
}
```

eth_getTransactionReceipt

Returns the receipt of a transaction by transaction hash. Receipts for pending transactions are not available.

Parameters

DATA - 32-byte hash of a transaction.

Returns

Object - Transaction receipt object, or null when no receipt is found.

!!! example bash tab="curl HTTP request" $ curl -X POST --data '{"jsonrpc":"2.0","method":"eth_getTransactionReceipt","params":["0x504ce587a65bdbdb6414a0c6c16d86a04dd79bfcc4f2950eec9634b30ce5370f"],"id":53}' <JSON-RPC-http-endpoint:port> 

```bash tab="wscat WS request"
{"jsonrpc":"2.0","method":"eth_getTransactionReceipt","params":["0x504ce587a65bdbdb6414a0c6c16d86a04dd79bfcc4f2950eec9634b30ce5370f"],"id":53}
```

```json tab="JSON result"
{
    "jsonrpc": "2.0",
    "id": 1,
    "result": {
        "blockHash": "0xe7212a92cfb9b06addc80dec2a0dfae9ea94fd344efeb157c41e12994fcad60a",
        "blockNumber": "0x50",
        "contractAddress": null,
        "cumulativeGasUsed": "0x5208",
        "from": "0x627306090abab3a6e1400e9345bc60c78a8bef57",
        "gasUsed": "0x5208",
        "logs": [],
        "logsBloom": "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
        "status": "0x1",
        "to": "0xf17f52151ebef6c7334fad080c5704d77216b732",
        "transactionHash": "0xc00e97af59c6f88de163306935f7682af1a34c67245e414537d02e422815efc3",
        "transactionIndex": "0x0"
    }
}
```

eth_newFilter

Creates a log filter. To poll for logs associated with the created filter, use eth_getFilterChanges.

Parameters

Object - Filter options object.

!!!note fromBlock and toBlock in the filter options object default to latest. To obtain logs using eth_getFilterLogs, set fromBlock and toBlock appropriately.

Returns

data - Filter ID hash

!!! example bash tab="curl HTTP request" $ curl -X POST --data '{"jsonrpc":"2.0","method":"eth_newFilter","params":[{"fromBlock":"earliest", "toBlock":"latest", "topics":[]}],"id":1}' <JSON-RPC-endpoint:port> 

```bash tab="wscat WS request"
{"jsonrpc":"2.0","method":"eth_newFilter","params":[{"fromBlock":"earliest", "toBlock":"latest", "topics":[]}],"id":1}
```

```json tab="JSON result"
{
    "jsonrpc": "2.0",
    "id": 1,
    "result": "0x1ddf0c00989044e9b41cc0ae40272df3"
}
```

eth_newBlockFilter

Creates a filter to retrieve new block hashes. To poll for new blocks, use eth_getFilterChanges.

Parameters

None

Returns

data - Filter ID hash

!!! example bash tab="curl HTTP request" $ curl -X POST --data '{"jsonrpc":"2.0","method":"eth_newBlockFilter","params":[],"id":1}' <JSON-RPC-http-endpoint:port> 

```bash tab="wscat WS request"
{"jsonrpc":"2.0","method":"eth_newBlockFilter","params":[],"id":1}
```

```json tab="JSON result"
{
    "jsonrpc": "2.0",
    "id": 1,
    "result": "0x9d78b6780f844228b96ecc65a320a825"
}
```

eth_newPendingTransactionFilter

Creates a filter to retrieve new pending transactions hashes. To poll for new pending transactions, use eth_getFilterChanges.

Parameters

None

Returns

data - Filter ID hash

!!! example bash tab="curl HTTP request" $ curl -X POST --data '{"jsonrpc":"2.0","method":"eth_newPendingTransactionFilter","params":[],"id":1}' <JSON-RPC-http-endpoint:port> 

```bash tab="wscat WS request"
{"jsonrpc":"2.0","method":"eth_newPendingTransactionFilter","params":[],"id":1}
```

```json tab="JSON result"
{
    "jsonrpc": "2.0",
    "id": 1,
    "result": "0x443d6a77c4964707a8554c92f7e4debd"
}
```

eth_uninstallFilter

Uninstalls a filter with the specified ID. When a filter is no longer required, call this method.

Filters time out when not requested by eth_getFilterChanges for 10 minutes.

Parameters

data - Filter ID hash

Returns

Boolean - true if the filter was successfully uninstalled; otherwise false.

!!! example The following request deletes the block filter with an ID of 0x4:

```bash tab="curl HTTP request"
$ curl -X POST --data '{"jsonrpc":"2.0","method":"eth_uninstallFilter","params":["0x70355a0b574b437eaa19fe95adfedc0a"],"id":1}' <JSON-RPC-http-endpoint:port>
```

```bash tab="wscat WS request"
{"jsonrpc":"2.0","method":"eth_uninstallFilter","params":["0x70355a0b574b437eaa19fe95adfedc0a"],"id":1}
```

```json tab="JSON result"
{
  "jsonrpc" : "2.0",
  "id" : 1,
  "result" : true
}
```

eth_getFilterChanges

Polls the specified filter and returns an array of changes that have occurred since the last poll.

Parameters

data - Filter ID hash

Returns

result : Array of Object - If nothing changed since the last poll, an empty list. Otherwise:

  • For filters created with eth_newBlockFilter, returns block hashes.
  • For filters created with eth_newPendingTransactionFilter, returns transaction hashes.
  • For filters created with eth_newFilter, returns log objects.

!!! example bash tab="curl HTTP request" $ curl -X POST --data '{"jsonrpc":"2.0","method":"eth_getFilterChanges","params":["0xf8bf5598d9e04fbe84523d42640b9b0e"],"id":1}' <JSON-RPC-http-endpoint:port> 

```bash tab="wscat WS request"
{"jsonrpc":"2.0","method":"eth_getFilterChanges","params":["0xf8bf5598d9e04fbe84523d42640b9b0e"],"id":1}
```

```json tab="JSON result"

Example result from a filter created with `eth_newBlockFilter`:
{
    "jsonrpc": "2.0",
    "id": 1,
    "result": [
        "0xda2bfe44bf85394f0d6aa702b5af89ae50ae22c0928c18b8903d9269abe17e0b",
        "0x88cd3a37306db1306f01f7a0e5b25a9df52719ad2f87b0f88ee0e6753ed4a812",
        "0x4d4c731fe129ff32b425e6060d433d3fde278b565bbd1fd624d5a804a34f8786"
    ]
}

Example result from a filter created with `eth_newPendingTransactionFilter`:
{
    "jsonrpc": "2.0",
    "id": 1,
    "result": [
        "0x1e977049b6db09362da09491bee3949d9362080ce3f4fc19721196d508580d46",
        "0xa3abc4b9a4e497fd58dc59cdff52e9bb5609136bcd499e760798aa92802769be"
    ]
}

Example result from a filter created with `eth_newFilter`:

{
    "jsonrpc": "2.0",
    "id": 1,
    "result": [
        {
            "logIndex": "0x0",
            "removed": false,
            "blockNumber": "0x233",
            "blockHash": "0xfc139f5e2edee9e9c888d8df9a2d2226133a9bd87c88ccbd9c930d3d4c9f9ef5",
            "transactionHash": "0x66e7a140c8fa27fe98fde923defea7562c3ca2d6bb89798aabec65782c08f63d",
            "transactionIndex": "0x0",
            "address": "0x42699a7612a82f1d9c36148af9c77354759b210b",
            "data": "0x0000000000000000000000000000000000000000000000000000000000000004",
            "topics": [
                "0x04474795f5b996ff80cb47c148d4c5ccdbe09ef27551820caa9c2f8ed149cce3"
            ]
        },
        {
            "logIndex": "0x0",
            "removed": false,
            "blockNumber": "0x238",
            "blockHash": "0x98b0ec0f9fea0018a644959accbe69cd046a8582e89402e1ab0ada91cad644ed",
            "transactionHash": "0xdb17aa1c2ce609132f599155d384c0bc5334c988a6c368056d7e167e23eee058",
            "transactionIndex": "0x0",
            "address": "0x42699a7612a82f1d9c36148af9c77354759b210b",
            "data": "0x0000000000000000000000000000000000000000000000000000000000000007",
            "topics": [
                "0x04474795f5b996ff80cb47c148d4c5ccdbe09ef27551820caa9c2f8ed149cce3"
            ]
        }
    ]
}

```

eth_getFilterLogs

Returns an array of logs for the specified filter.

!!!note eth_getFilterLogs is only used for filters created with eth_newFilter.

  You can use `eth_getLogs` to specify a filter object and get logs without creating a filter.

Parameters

data - Filter ID hash

Returns

array - Log objects

!!! example

```bash tab="curl HTTP request"
$ curl -X POST --data '{"jsonrpc":"2.0","method":"eth_getFilterLogs","params":["0x5ace5de3985749b6a1b2b0d3f3e1fb69"],"id":1}' <JSON-RPC-http-endpoint:port>
```

```bash tab="wscat WS request"
{"jsonrpc":"2.0","method":"eth_getFilterLogs","params":["0x5ace5de3985749b6a1b2b0d3f3e1fb69"],"id":1}
```

```json tab="JSON result"
{
  "jsonrpc" : "2.0",
  "id" : 1,
  "result" : [ {
    "logIndex" : "0x0",
    "removed" : false,
    "blockNumber" : "0xb3",
    "blockHash" : "0xe7cd776bfee2fad031d9cc1c463ef947654a031750b56fed3d5732bee9c61998",
    "transactionHash" : "0xff36c03c0fba8ac4204e4b975a6632c862a3f08aa01b004f570cc59679ed4689",
    "transactionIndex" : "0x0",
    "address" : "0x2e1f232a9439c3d459fceca0beef13acc8259dd8",
    "data" : "0x0000000000000000000000000000000000000000000000000000000000000003",
    "topics" : [ "0x04474795f5b996ff80cb47c148d4c5ccdbe09ef27551820caa9c2f8ed149cce3" ]
  }, {
    "logIndex" : "0x0",
    "removed" : false,
    "blockNumber" : "0xb6",
    "blockHash" : "0x3f4cf35e7ed2667b0ef458cf9e0acd00269a4bc394bb78ee07733d7d7dc87afc",
    "transactionHash" : "0x117a31d0dbcd3e2b9180c40aca476586a648bc400aa2f6039afdd0feab474399",
    "transactionIndex" : "0x0",
    "address" : "0x2e1f232a9439c3d459fceca0beef13acc8259dd8",
    "data" : "0x0000000000000000000000000000000000000000000000000000000000000005",
    "topics" : [ "0x04474795f5b996ff80cb47c148d4c5ccdbe09ef27551820caa9c2f8ed149cce3" ]
  } ]
}
```

eth_getLogs

Returns an array of logs matching a specified filter object.

Parameters

Object - Filter options object

Returns

array - Log objects

!!! example The following request returns all logs for the contract at address 0x2e1f232a9439c3d459fceca0beef13acc8259dd8.

```bash tab="curl HTTP request"
$ curl -X POST --data '{"jsonrpc":"2.0","method":"eth_getLogs","params":[{"fromBlock":"earliest", "toBlock":"latest", "address": "0x2e1f232a9439c3d459fceca0beef13acc8259dd8", "topics":[]}], "id":1}' <JSON-RPC-http-endpoint:port>
```

```bash tab="wscat WS request"
{"jsonrpc":"2.0","method":"eth_getLogs","params":[{"fromBlock":"earliest", "toBlock":"latest", "address": "0x2e1f232a9439c3d459fceca0beef13acc8259dd8", "topics":[]}], "id":1}
```

```json tab="JSON result"
{
  "jsonrpc" : "2.0",
  "id" : 1,
  "result" : [ {
    "logIndex" : "0x0",
    "removed" : false,
    "blockNumber" : "0xb3",
    "blockHash" : "0xe7cd776bfee2fad031d9cc1c463ef947654a031750b56fed3d5732bee9c61998",
    "transactionHash" : "0xff36c03c0fba8ac4204e4b975a6632c862a3f08aa01b004f570cc59679ed4689",
    "transactionIndex" : "0x0",
    "address" : "0x2e1f232a9439c3d459fceca0beef13acc8259dd8",
    "data" : "0x0000000000000000000000000000000000000000000000000000000000000003",
    "topics" : [ "0x04474795f5b996ff80cb47c148d4c5ccdbe09ef27551820caa9c2f8ed149cce3" ]
  }, {
    "logIndex" : "0x0",
    "removed" : false,
    "blockNumber" : "0xb6",
    "blockHash" : "0x3f4cf35e7ed2667b0ef458cf9e0acd00269a4bc394bb78ee07733d7d7dc87afc",
    "transactionHash" : "0x117a31d0dbcd3e2b9180c40aca476586a648bc400aa2f6039afdd0feab474399",
    "transactionIndex" : "0x0",
    "address" : "0x2e1f232a9439c3d459fceca0beef13acc8259dd8",
    "data" : "0x0000000000000000000000000000000000000000000000000000000000000005",
    "topics" : [ "0x04474795f5b996ff80cb47c148d4c5ccdbe09ef27551820caa9c2f8ed149cce3" ]
  } ]
}
```

eth_getWork

Returns the hash of the current block, the seed hash, and the target boundary condition to be met.

Parameters

None

Returns

result : Array of DATA with the following fields:

  • DATA, 32 Bytes - Hash of the current block header (pow-hash).
  • DATA, 32 Bytes - The seed hash used for the DAG.
  • DATA, 32 Bytes - The target boundary condition to be met; 2^256 / difficulty.

!!! example bash tab="curl HTTP request" $ curl -X POST --data '{"jsonrpc":"2.0","method":"eth_getWork","params":[],"id":1}' <JSON-RPC-http-endpoint:port> 

```bash tab="wscat WS request"
{"jsonrpc":"2.0","method":"eth_getWork","params":[],"id":1}
```

```json tab="JSON result"
{
  "id":1,
  "jsonrpc":"2.0",
  "result": [
      "0x1234567890abcdef1234567890abcdef1234567890abcdef1234567890abcdef",
      "0x5EED00000000000000000000000000005EED0000000000000000000000000000",
      "0xd1ff1c01710000000000000000000000d1ff1c01710000000000000000000000"
    ]
}
```

Clique Methods

!!! note The CLIQUE API methods are not enabled by default. Use the --rpc-http-api or --rpc-ws-api options to enable the CLIQUE API methods.

clique_discard

Discards a proposal to add or remove a signer with the specified address.

Parameters

data - 20-byte address of proposed signer.

Returns

result: boolean - true

!!! example bash tab="curl HTTP request" $ curl -X POST --data '{"jsonrpc":"2.0","method":"clique_discard","params":["0xFE3B557E8Fb62b89F4916B721be55cEb828dBd73"], "id":1}' <JSON-RPC-http-endpoint:port> 

```bash tab="wscat WS request"
{"jsonrpc":"2.0","method":"clique_discard","params":["0xFE3B557E8Fb62b89F4916B721be55cEb828dBd73"], "id":1}
```

```json tab="JSON result"
{
  "jsonrpc" : "2.0",
  "id" : 1,
  "result" : true
}
```

clique_getSigners

Lists signers for the specified block.

Parameters

quantity|tag - Integer representing a block number or one of the string tags latest, earliest, or pending, as described in Block Parameter.

Returns

result: array of data - List of 20-byte addresses of signers.

!!! example bash tab="curl HTTP request" $ curl -X POST --data '{"jsonrpc":"2.0","method":"clique_getSigners","params":["latest"], "id":1}' <JSON-RPC-http-endpoint:port> 

```bash tab="wscat WS request"
{"jsonrpc":"2.0","method":"clique_getSigners","params":["latest"], "id":1}
```

```json tab="JSON result"
{
  "jsonrpc" : "2.0",
  "id" : 1,
  "result" : [ "0x42eb768f2244c8811c63729a21a3569731535f06", "0x7ffc57839b00206d1ad20c69a1981b489f772031", "0xb279182d99e65703f0076e4812653aab85fca0f0" ]
}
```

clique_getSignersAtHash

Lists signers for the specified block.

Parameters

data - 32-byte block hash.

Returns

result: array of data - List of 20-byte addresses of signers.

!!! example bash tab="curl HTTP request" $ curl -X POST --data '{"jsonrpc":"2.0","method":"clique_getSignersAtHash","params":["0x98b2ddb5106b03649d2d337d42154702796438b3c74fd25a5782940e84237a48"], "id":1}' <JSON-RPC-http-endpoint:port> 

```bash tab="wscat WS request"
{"jsonrpc":"2.0","method":"clique_getSignersAtHash","params":["0x98b2ddb5106b03649d2d337d42154702796438b3c74fd25a5782940e84237a48"], "id":1}
```

```json tab="JSON result"
{
  "jsonrpc" : "2.0",
  "id" : 1,
  "result" : [ "0x42eb768f2244c8811c63729a21a3569731535f06", "0x7ffc57839b00206d1ad20c69a1981b489f772031", "0xb279182d99e65703f0076e4812653aab85fca0f0" ]
}
```

clique_propose

Proposes adding or removing a signer with the specified address.

Parameters

data - 20-byte address.

boolean - true to propose adding signer or false to propose removing signer.

Returns

result: boolean - true

!!! example bash tab="curl HTTP request" $ curl -X POST --data '{"jsonrpc":"2.0","method":"clique_propose","params":["0xFE3B557E8Fb62b89F4916B721be55cEb828dBd73", true], "id":1}' <JSON-RPC-http-endpoint:port> 

```bash tab="wscat WS request"
{"jsonrpc":"2.0","method":"clique_propose","params":["0xFE3B557E8Fb62b89F4916B721be55cEb828dBd73", true], "id":1}
```

```json tab="JSON result"
{
 "jsonrpc" : "2.0",
 "id" : 1,
 "result" : true
}
```

clique_proposals

Returns current proposals.

Parameters

None

Returns

result:object - Map of account addresses to corresponding boolean values indicating the proposal for each account.

If the boolean value is true, the proposal is to add a signer. If false, the proposal is to remove a signer.

!!! example bash tab="curl HTTP request" $ curl -X POST --data '{"jsonrpc":"2.0","method":"clique_proposals","params":[], "id":1}' <JSON-RPC-http-endpoint:port> 

```bash tab="wscat WS request"
{"jsonrpc":"2.0","method":"clique_proposals","params":[], "id":1}
```

```json tab="JSON result"
{
    "jsonrpc": "2.0",
    "id": 1,
    "result": {
        "0x42eb768f2244c8811c63729a21a3569731535f07": false,
        "0x12eb759f2222d7711c63729a45c3585731521d01": true
    }
}
```

Debug Methods

!!! note The DEBUG API methods are not enabled by default. Use the --rpc-http-api or --rpc-ws-api options to enable the DEBUG API methods.

debug_storageRangeAt

Remix uses debug_storageRangeAt to implement debugging. Use the Debugger tab in Remix rather than calling debug_storageRangeAt directly.

Returns the contract storage for the specified range.

Parameters

blockHash : data - Block hash

txIndex : integer - Transaction index from which to start

address : data - Contract address

startKey : hash - Start key

limit : integer - Number of storage entries to return

Returns

result:object - Range object

!!! example bash tab="curl HTTP request" $ curl -X POST --data '{"jsonrpc":"2.0","method":"debug_storageRangeAt","params":["0x2b76b3a2fc44c0e21ea183d06c846353279a7acf12abcc6fb9d5e8fb14ae2f8c",0,"0x0e0d2c8f7794e82164f11798276a188147fbd415","0x0000000000000000000000000000000000000000000000000000000000000000",1], "id":1}' <JSON-RPC-http-endpoint:port> 

```bash tab="wscat WS request"
{"jsonrpc":"2.0","method":"debug_storageRangeAt","params":["0x2b76b3a2fc44c0e21ea183d06c846353279a7acf12abcc6fb9d5e8fb14ae2f8c",0,"0x0e0d2c8f7794e82164f11798276a188147fbd415","0x0000000000000000000000000000000000000000000000000000000000000000",1], "id":1}
```

```json tab="JSON result"
{
    "jsonrpc": "2.0",
    "id": 1,
    "result": {
        "storage": {
            "0x290decd9548b62a8d60345a988386fc84ba6bc95484008f6362f93160ef3e563": {
                "key": null,
                "value": "0x0000000000000000000000000000000000000000000000000000000000000001"
            }
        },
        "nextKey": "0xb10e2d527612073b26eecdfd717e6a320cf44b4afac2b0732d9fcbe2b7fa0cf6"
    }
}
```

debug_metrics

Returns metrics providing information on the internal operation of Pantheon.

The available metrics may change over time. The JVM metrics may vary based on the JVM implementation being used.

The metric types are:

  • Timer
  • Counter
  • Gauge

Parameters

None

Returns

result:object

!!! example bash tab="curl HTTP request" $ curl -X POST --data '{"jsonrpc":"2.0","method":"debug_metrics","params":[],"id":1}' <JSON-RPC-http-endpoint:port> 

```bash tab="wscat WS request"
{"jsonrpc":"2.0","method":"debug_metrics","params":[],"id":1}
```

```json tab="JSON result"
{
    "jsonrpc": "2.0",
    "id": 1,
    "result": {
        "jvm": {
            "memory_bytes_init": {
                "heap": 268435456,
                "nonheap": 2555904
            },
            "threads_current": 41,
            "memory_bytes_used": {
                "heap": 696923976,
                "nonheap": 63633456
            },
            "memory_pool_bytes_used": {
                "PS Eden Space": 669119360,
                "Code Cache": 19689024,
                "Compressed Class Space": 4871144,
                "PS Survivor Space": 2716320,
                "PS Old Gen": 25088296,
                "Metaspace": 39073288
            },
            ...
        },
        "process": {
            "open_fds": 546,
            "cpu_seconds_total": 67.148992,
            "start_time_seconds": 1543897699.589,
            "max_fds": 10240
        },
        "rpc": {
            "request_time": {
                "debug_metrics": {
                    "bucket": {
                        "+Inf": 2,
                        "0.01": 1,
                        "0.075": 2,
                        "0.75": 2,
                        "0.005": 1,
                        "0.025": 2,
                        "0.1": 2,
                        "1.0": 2,
                        "0.05": 2,
                        "10.0": 2,
                        "0.25": 2,
                        "0.5": 2,
                        "5.0": 2,
                        "2.5": 2,
                        "7.5": 2
                    },
                    "count": 2,
                    "sum": 0.015925392
                }
            }
        },
        "blockchain": {
            "difficulty_total": 3533501,
            "announcedBlock_ingest": {
                "bucket": {
                    "+Inf": 0,
                    "0.01": 0,
                    "0.075": 0,
                    "0.75": 0,
                    "0.005": 0,
                    "0.025": 0,
                    "0.1": 0,
                    "1.0": 0,
                    "0.05": 0,
                    "10.0": 0,
                    "0.25": 0,
                    "0.5": 0,
                    "5.0": 0,
                    "2.5": 0,
                    "7.5": 0
                },
                "count": 0,
                "sum": 0
            },
            "height": 1908793
        },
        "peers": {
            "disconnected_total": {
                "remote": {
                    "SUBPROTOCOL_TRIGGERED": 5
                },
                "local": {
                    "TCP_SUBSYSTEM_ERROR": 1,
                    "SUBPROTOCOL_TRIGGERED": 2,
                    "USELESS_PEER": 3
                }
            },
            "peer_count_current": 2,
            "connected_total": 10
        }
    }
}
```

debug_traceTransaction

Remix uses debug_traceTransaction to implement debugging. Use the Debugger tab in Remix rather than calling debug_traceTransaction directly.

Reruns the transaction with the same state as when the transaction was executed.

Parameters

transactionHash : data - Transaction hash.

Object - request options (all optional and default to false):

  • disableStorage : boolean - true disables storage capture.
  • disableMemory : boolean - true disables memory capture.
  • disableStack : boolean - true disables stack capture.

Returns

result:object - Trace object.

!!! example bash tab="curl HTTP request" $ curl -X POST --data '{"jsonrpc":"2.0","method":"debug_traceTransaction","params":["0x2cc6c94c21685b7e0f8ddabf277a5ccf98db157c62619cde8baea696a74ed18e",{"disableStorage":true}],"id":1}' <JSON-RPC-http-endpoint:port> 

```bash tab="wscat WS request"
{"jsonrpc":"2.0","method":"debug_traceTransaction","params":["0x2cc6c94c21685b7e0f8ddabf277a5ccf98db157c62619cde8baea696a74ed18e",{"disableStorage":true}],"id":1}
```

```json tab="JSON result"
{
  "jsonrpc" : "2.0",
  "id" : 1,
  "result" : {
    "gas" : 21000,
    "failed" : false,
    "returnValue" : "",
    "structLogs" : [ {
      "pc" : 0,
      "op" : "STOP",
      "gas" : 0,
      "gasCost" : 0,
      "depth" : 1,
      "stack" : [ ],
      "memory" : [ ],
      "storage" : null
    } ]
  }
}
```

Miner Methods

!!! note The MINER API methods are not enabled by default. Use the --rpc-http-api or --rpc-ws-api options to enable the MINER API methods.

miner_start

Starts the CPU mining process. To start mining, a miner coinbase must have been previously specified using the --miner-coinbase command line option.

Parameters

None

Returns

result : boolean - true if the mining start request was received successfully; otherwise returns an error.

!!! example bash tab="curl HTTP request" $ curl -X POST --data '{"jsonrpc":"2.0","method":"miner_start","params":[],"id":1}' <JSON-RPC-http-endpoint:port> 

```bash tab="wscat WS request"
{"jsonrpc":"2.0","method":"miner_start","params":[],"id":1}
```

```json tab="JSON result"
{
    "jsonrpc": "2.0",
    "id": 1,
    "result": true
}
```

miner_stop

Stops the CPU mining process on the client.

Parameters

None

Returns

result : boolean - true if the mining stop request was received successfully; otherwise returns an error.

!!! example bash tab="curl HTTP request" $ curl -X POST --data '{"jsonrpc":"2.0","method":"miner_stop","params":[],"id":1}' <JSON-RPC-http-endpoint:port> 

```bash tab="wscat WS request"
{"jsonrpc":"2.0","method":"miner_stop","params":[],"id":1}
```

```json tab="JSON result"
{
    "jsonrpc": "2.0",
    "id": 1,
    "result": true
}
```

IBFT 2.0 Methods

!!! note IBFT 2.0 is under development and will be available in v1.0.

!!! note The IBFT API methods are not enabled by default. Use the --rpc-http-api or --rpc-ws-api options to enable the IBFT API methods.

ibft_discardValidatorVote

Discards a proposal to add or remove a validator with the specified address.

Parameters

data - 20-byte address of proposed validator

Returns

result: boolean - true

!!! example bash tab="curl HTTP request" $ curl -X POST --data '{"jsonrpc":"2.0","method":"ibft_discardValidatorVote","params":["0xef1bfb6a12794615c9b0b5a21e6741f01e570185"], "id":1}' <JSON-RPC-http-endpoint:port> 

```bash tab="wscat WS request"
{"jsonrpc":"2.0","method":"ibft_discardValidatorVote","params":["0xef1bfb6a12794615c9b0b5a21e6741f01e570185"], "id":1}
```

```json tab="JSON result"
{
  "jsonrpc" : "2.0",
  "id" : 1,
  "result" : true
}
```

ibft_getPendingVotes

Returns current votes.

Parameters

None

Returns

result: object - Map of account addresses to corresponding boolean values indicating the vote for each account.

If the boolean value is true, the vote is to add a validator. If false, the proposal is to remove a validator.

!!! example bash tab="curl HTTP request" $ curl -X POST --data '{"jsonrpc":"2.0","method":"ibft_getPendingVotes","params":[], "id":1}' <JSON-RPC-http-endpoint:port> 

```bash tab="wscat WS request"
{"jsonrpc":"2.0","method":"ibft_getPendingVotes","params":[], "id":1}
```

```json tab="JSON result"
{
    "jsonrpc": "2.0",
    "id": 1,
    "result": {
        "0xef1bfb6a12794615c9b0b5a21e6741f01e570185": true,
        "0x42d4287eac8078828cf5f3486cfe601a275a49a5": true
    }
}
```

ibft_getValidatorsByBlockHash

Lists the validators defined in the specified block.

Parameters

data - 32-byte block hash

Returns

result: array of data - List of validator addresses

!!! example bash tab="curl HTTP request" $ curl -X POST --data '{"jsonrpc":"2.0","method":"ibft_getValidatorsByBlockHash","params":["0xbae7d3feafd743343b9a4c578cab5e5d65eb735f6855fb845c00cab356331256"], "id":1}' <JSON-RPC-http-endpoint:port> 

```bash tab="wscat WS request"
{"jsonrpc":"2.0","method":"ibft_getValidatorsByBlockHash","params":["0xbae7d3feafd743343b9a4c578cab5e5d65eb735f6855fb845c00cab356331256"], "id":1}
```

```json tab="JSON result"
{
    "jsonrpc": "2.0",
    "id": 1,
    "result": [
        "0x42d4287eac8078828cf5f3486cfe601a275a49a5",
        "0xb1b2bc9582d2901afdc579f528a35ca41403fa85",
        "0xef1bfb6a12794615c9b0b5a21e6741f01e570185"
    ]
}
```

ibft_getValidatorsByBlockNumber

Lists the validators defined in the specified block.

Parameters

quantity|tag - Integer representing a block number or one of the string tags latest, earliest, or pending, as described in Block Parameter.

Returns

result: array of data - List of validator addresses

!!! example bash tab="curl HTTP request" $ curl -X POST --data '{"jsonrpc":"2.0","method":"ibft_getValidatorsByBlockNumber","params":["latest"], "id":1}' <JSON-RPC-http-endpoint:port> 

```bash tab="wscat WS request"
{"jsonrpc":"2.0","method":"ibft_getValidatorsByBlockNumber","params":["latest"], "id":1}
```

```json tab="JSON result"
{
    "jsonrpc": "2.0",
    "id": 1,
    "result": [
        "0x42d4287eac8078828cf5f3486cfe601a275a49a5",
        "0xb1b2bc9582d2901afdc579f528a35ca41403fa85",
        "0xef1bfb6a12794615c9b0b5a21e6741f01e570185"
    ]
}
```

ibft_proposeValidatorVote

Proposes adding or removing a validator) with the specified address.

Parameters

data - Account address

boolean - true to propose adding validator or false to propose removing validator.

Returns

result: boolean - true

!!! example bash tab="curl HTTP request" $ curl -X POST --data '{"jsonrpc":"2.0","method":"ibft_proposeValidatorVote","params":["42d4287eac8078828cf5f3486cfe601a275a49a5",true], "id":1}' <JSON-RPC-http-endpoint:port> 

```bash tab="wscat WS request"
{"jsonrpc":"2.0","method":"ibft_proposeValidatorVote","params":["42d4287eac8078828cf5f3486cfe601a275a49a5",true], "id":1}
```

```json tab="JSON result"
{
 "jsonrpc" : "2.0",
 "id" : 1,
 "result" : true
}
```

Permissioning Methods

!!! note Permissioning is under development and will be available in v1.0.

!!! note The PERM API methods are not enabled by default. Use the --rpc-http-api or --rpc-ws-api options to enable the PERM API methods.

perm_addAccountsToWhitelist

Adds accounts (participants) to the accounts whitelist.

Parameters

list of strings - List of account addresses

!!! note The parameters list contains a list which is why the account addresses are enclosed by double square brackets.

Returns

result - Success or error. Errors include attempting to add accounts already on the whitelist or including invalid account addresses.

!!! example bash tab="curl HTTP request" $ curl -X POST --data '{"jsonrpc":"2.0","method":"perm_addAccountsToWhitelist","params":[["0xb9b81ee349c3807e46bc71aa2632203c5b462032", "0xb9b81ee349c3807e46bc71aa2632203c5b462034"]], "id":1}' <JSON-RPC-http-endpoint:port> 

```bash tab="wscat WS request"
{"jsonrpc":"2.0","method":"perm_addAccountsToWhitelist","params":[["0xb9b81ee349c3807e46bc71aa2632203c5b462032", "0xb9b81ee349c3807e46bc71aa2632203c5b462034"]], "id":1}
```

```json tab="JSON result"
{
    "jsonrpc": "2.0",
    "id": 1,
    "result": "Success"
}
```

perm_getAccountsWhitelist

Lists accounts (participants) in the accounts whitelist.

Parameters

None

Returns

result: list - Accounts (participants) in the accounts whitelist.

!!! example bash tab="curl HTTP request" $ curl -X POST --data '{"jsonrpc":"2.0","method":"perm_getAccountsWhitelist","params":[], "id":1}' <JSON-RPC-http-endpoint:port> 

```bash tab="wscat WS request"
{"jsonrpc":"2.0","method":"perm_getAccountsWhitelist","params":[], "id":1}
```

```json tab="JSON result"
{
    "jsonrpc": "2.0",
    "id": 1,
    "result": [
        "0x0000000000000000000000000000000000000009",
        "0xb9b81ee349c3807e46bc71aa2632203c5b462033"
    ]
}
```

perm_removeAccountsFromWhitelist

Removes accounts (participants) from the accounts whitelist.

Parameters

list of strings - List of account addresses

!!! note The parameters list contains a list which is why the account addresses are enclosed by double square brackets.

Returns

result - Success or error. Errors include attempting to remove accounts not on the whitelist or including invalid account addresses.

!!! example bash tab="curl HTTP request" $ curl -X POST --data '{"jsonrpc":"2.0","method":"perm_removeAccountsFromWhitelist","params":[["0xb9b81ee349c3807e46bc71aa2632203c5b462032", "0xb9b81ee349c3807e46bc71aa2632203c5b462034"]], "id":1}' <JSON-RPC-http-endpoint:port> 

```bash tab="wscat WS request"
{"jsonrpc":"2.0","method":"perm_removeAccountsFromWhitelist","params":[["0xb9b81ee349c3807e46bc71aa2632203c5b462032", "0xb9b81ee349c3807e46bc71aa2632203c5b462034"]], "id":1}
```

```json tab="JSON result"
{
    "jsonrpc": "2.0",
    "id": 1,
    "result": "Success"
}
```

perm_addNodesToWhitelist

Adds nodes to the nodes whitelist.

Parameters

list of strings - List of enode URLs

!!! note The parameters list contains a list which is why the enode URLs are enclosed by double square brackets.

Returns

result - Success or error. Errors include attempting to add nodes already on the whitelist or including invalid enode URLs.

!!! example bash tab="curl HTTP request" $ curl -X POST --data '{"jsonrpc":"2.0","method":"perm_addNodesToWhitelist","params":[["enode://7e4ef30e9ec683f26ad76ffca5b5148fa7a6575f4cfad4eb0f52f9c3d8335f4a9b6f9e66fcc73ef95ed7a2a52784d4f372e7750ac8ae0b544309a5b391a23dd7@127.0.0.1:30303","enode://2feb33b3c6c4a8f77d84a5ce44954e83e5f163e7a65f7f7a7fec499ceb0ddd76a46ef635408c513d64c076470eac86b7f2c8ae4fcd112cb28ce82c0d64ec2c94@127.0.0.1:30304"]], "id":1}' <JSON-RPC-http-endpoint:port> 

```bash tab="wscat WS request"
{"jsonrpc":"2.0","method":"perm_addNodesToWhitelist","params":[["enode://7e4ef30e9ec683f26ad76ffca5b5148fa7a6575f4cfad4eb0f52f9c3d8335f4a9b6f9e66fcc73ef95ed7a2a52784d4f372e7750ac8ae0b544309a5b391a23dd7@127.0.0.1:30303","enode://2feb33b3c6c4a8f77d84a5ce44954e83e5f163e7a65f7f7a7fec499ceb0ddd76a46ef635408c513d64c076470eac86b7f2c8ae4fcd112cb28ce82c0d64ec2c94@127.0.0.1:30304"]], "id":1}
```

```json tab="JSON result"
{
    "jsonrpc": "2.0",
    "id": 1,
    "result": "Success"
}
```

perm_getNodesWhitelist

Lists nodes in the nodes whitelist.

Parameters

None

Returns

result: list - Enode URLs of nodes in the nodes whitelist.

!!! example bash tab="curl HTTP request" $ curl -X POST --data '{"jsonrpc":"2.0","method":"perm_getNodesWhitelist","params":[], "id":1}' <JSON-RPC-http-endpoint:port> 

```bash tab="wscat WS request"
{"jsonrpc":"2.0","method":"perm_getNodesWhitelist","params":[], "id":1}
```

```json tab="JSON result"
{
    "jsonrpc": "2.0",
    "id": 1,
    "result": [
        "enode://7b61d5ee4b44335873e6912cb5dd3e3877c860ba21417c9b9ef1f7e500a82213737d4b269046d0669fb2299a234ca03443f25fe5f706b693b3669e5c92478ade@127.0.0.1:30305",
        "enode://2feb33b3c6c4a8f77d84a5ce44954e83e5f163e7a65f7f7a7fec499ceb0ddd76a46ef635408c513d64c076470eac86b7f2c8ae4fcd112cb28ce82c0d64ec2c94@127.0.0.1:30304"
    ]
}
```

perm_removeNodesFromWhitelist

Removes nodes from the nodes whitelist.

Parameters

list of strings - List of enode URLs

!!! note The parameters list contains a list which is why the enode URLs are enclosed by double square brackets.

Returns

result - Success or error. Errors include attempting to remove nodes not on the whitelist or including invalid enode URLs.

!!! example bash tab="curl HTTP request" $ curl -X POST --data '{"jsonrpc":"2.0","method":"perm_removeNodesFromWhitelist","params":[["enode://7e4ef30e9ec683f26ad76ffca5b5148fa7a6575f4cfad4eb0f52f9c3d8335f4a9b6f9e66fcc73ef95ed7a2a52784d4f372e7750ac8ae0b544309a5b391a23dd7@127.0.0.1:30303","enode://2feb33b3c6c4a8f77d84a5ce44954e83e5f163e7a65f7f7a7fec499ceb0ddd76a46ef635408c513d64c076470eac86b7f2c8ae4fcd112cb28ce82c0d64ec2c94@127.0.0.1:30304"]], "id":1}' <JSON-RPC-http-endpoint:port> 

```bash tab="wscat WS request"
{"jsonrpc":"2.0","method":"perm_removeNodesFromWhitelist","params":[["enode://7e4ef30e9ec683f26ad76ffca5b5148fa7a6575f4cfad4eb0f52f9c3d8335f4a9b6f9e66fcc73ef95ed7a2a52784d4f372e7750ac8ae0b544309a5b391a23dd7@127.0.0.1:30303","enode://2feb33b3c6c4a8f77d84a5ce44954e83e5f163e7a65f7f7a7fec499ceb0ddd76a46ef635408c513d64c076470eac86b7f2c8ae4fcd112cb28ce82c0d64ec2c94@127.0.0.1:30304"]], "id":1}
```

```json tab="JSON result"
{
    "jsonrpc": "2.0",
    "id": 1,
    "result": "Success"
}
```

perm_reloadPermissionsFromFile

Reloads the accounts and nodes whitelists from the permissions configuration file.

Parameters

None

Returns

result - Success or error if the permissions configuration file is not valid.

!!! example bash tab="curl HTTP request" $ curl -X POST --data '{"jsonrpc":"2.0","method":"perm_reloadPermissionsFromFile","params":[], "id":1}' <JSON-RPC-http-endpoint:port> 

```bash tab="wscat WS request"
{"jsonrpc":"2.0","method":"perm_reloadPermissionsFromFile","params":[], "id":1}
```

```json tab="JSON result"
{
    "jsonrpc": "2.0",
    "id": 1,
    "result": "Success"
}
```