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JSON-RPC is a stateless, light-weight remote procedure call (RPC) protocol. Primarily this specification defines several data structures and the rules around their processing. It is transport agnostic, meaning that the concepts can be used within the same process, over sockets, over HTTP, or in many various message passing environments. It uses JSON (RFC 4627) as data format.

CLI options for JSON-RPC

  • --no-jsonrpc

    Do not run jsonrpc.

  • --jsonrpc-port <PORT>

    Listen for rpc connections on PORT. [default: 8080]

In the current version, it's only supported through HTTP.

List of types

H160, H256, H512, ...

A XXX-bit hexadecimal string. (e.g. H160: 160-bit hexadecimal string)

U64, U128, U256, ...

A hexadecimal string for XXX-bit unsigned integer

NetworkID

A two-letter string to denote a network. For example, "cc" is for the main network, and "wc" is for the Corgi test network. See the specification.

PlatformAddress

A printable encoding of a public key. The network id is at the end of the address. See the specification.

Block

  • author: PlatformAddress
  • extraData: any[]
  • hash: H256
  • number: number
  • transactions: Transaction[]
  • transactionsRoot: H256
  • parentHash: H256
  • seal: string[]
  • stateRoot: H256
  • timestamp: number

Transaction

  • blockHash: H256
  • blockNumber: number
  • fee: U64
  • hash: H256
  • networkId: NetworkID
  • seq: number
  • transactionIndex: number
  • sig: Signature
  • action: Action

UnsignedTransaction

  • fee: U64
  • networkId: NetworkID
  • seq: number | null
  • action: Action

Actions

Pay Action

  • type: "pay"
  • networkId: NetworkID
  • receiver: PlatformAddress
  • quantity: U64

Custom Action

  • type: "custom"
  • networkId: NetworkID
  • handlerId: number
  • bytes: string

Transaction in Response

When Transaction is included in any response, there will be an additional field hash in the data, which is the hash value of the given transaction. This decreases the time to calculate the transaction hash when it is needed from the response.

Signature

H512 for Ed25519 Signatures

CommonParams

  • maxExtraDataSize: U64
  • networkID: string
  • maxBodySize: U64
  • snapshotPeriod: U64

Error codes

Code Message Description
-32002 No Author No author is configured
-32004 No Work Required No work is required
-32005 No Work Found No work is found
-32009 Invalid RLP Failed to decode the RLP string
-32011 KVDB Error Failed to access the state (Internal error of CodeChain)
-32010 Execution Failed Failed to execute the transactions
-32030 Verification Failed The signature is invalid
-32031 Already Imported The same transaction is already imported
-32032 Not Enough Balance The signer's balance is insufficient
-32033 Too Low Fee The fee is lower than the minimum required
-32034 Too Cheap to Replace The fee is lower than the existing one in the queue
-32035 Invalid Seq The signer's seq is invalid to import
-32036 Invalid NetworkId The network id does not match
-32040 Keystore Error Failed to access the key store (Internal error of CodeChain)
-32041 Key Error The key is invalid
-32042 Already Exists The account already exists
-32043 Wrong Password The password does not match
-32044 No Such Account There is no such account in the key store
-32045 Not Unlocked The account is not unlocked
-32099 Unknown Error An unknown error occurred
-32602 Invalid Params At least one of the parameters is invalid

List of methods







Specification

ping

Sends ping to check whether CodeChain's RPC server is responding or not.

Params

No parameters

Returns

string - "pong"

Request Example

  curl \
    -H 'Content-Type: application/json' \
    -d '{"jsonrpc": "2.0", "method": "ping", "params": [], "id": null}' \
    localhost:8080

Response Example

{
  "jsonrpc":"2.0",
  "result":"pong",
  "id":null
}

Back to List of methods

version

Gets the version of CodeChain.

Params

No parameters

Returns

string - e.g. 0.1.0

Request Example

  curl \
    -H 'Content-Type: application/json' \
    -d '{"jsonrpc": "2.0", "method": "version", "params": [], "id": null}' \
    localhost:8080

Response Example

{
  "jsonrpc":"2.0",
  "result":"0.1.0",
  "id":null
}

Back to List of methods

commitHash

Gets the commit hash of the repository upon which the CodeChain executable was built.

Params

No parameters

Returns

string - the commit hash

Request Example

  curl \
    -H 'Content-Type: application/json' \
    -d '{"jsonrpc": "2.0", "method": "commitHash", "params": [], "id": null}' \
    localhost:8080

Response Example

{
  "jsonrpc":"2.0",
  "result": "361a36fe20900f15e71148a615b25978652bfe90",
  "id":null
}

Back to List of methods

chain_getBestBlockNumber

Gets the number of the best block.

Params

No parameters

Returns

number

Request Example

  curl \
    -H 'Content-Type: application/json' \
    -d '{"jsonrpc": "2.0", "method": "chain_getBestBlockNumber", "params": [], "id": null}' \
    localhost:8080

Response Example

{
  "jsonrpc":"2.0",
  "result":1,
  "id":null
}

Back to List of methods

chain_getBestBlockId

Gets the number and the hash of the best block.

Params

No parameters

Returns

{ hash: H256, number: number }

Request Example

  curl \
    -H 'Content-Type: application/json' \
    -d '{"jsonrpc": "2.0", "method": "chain_getBestBlockId", "params": [], "id": null}' \
    localhost:8080

Response Example

{
  "jsonrpc":"2.0",
  "result":{
    "hash":"0x7f7104b580f9418d444560009e5a92a4573d42d2c51cd0c6045afdc761826249",
    "number":1
  },
  "id":null
}

Back to List of methods

chain_getBlockHash

Gets the hash of the block with given number.

Params

  1. n - number

Returns

null | H256

Errors: Invalid Params

Request Example

  curl \
    -H 'Content-Type: application/json' \
    -d '{"jsonrpc": "2.0", "method": "chain_getBlockHash", "params": [1], "id": null}' \
    localhost:8080

Response Example

{
  "jsonrpc":"2.0",
  "result":"0x56642f04d519ae3262c7ba6facf1c5b11450ebaeb7955337cfbc45420d573077",
  "id":null
}

Back to List of methods

chain_getBlockByNumber

Gets the block with the given number.

Params

  1. number: number

Returns

null | Block

Errors: Invalid Params

Request Example

  curl \
    -H 'Content-Type: application/json' \
    -d '{"jsonrpc": "2.0", "method": "chain_getBlockByNumber", "params": [5], "id": null}' \
    http://localhost:8080

Response Example

{
  "jsonrpc":"2.0",
  "result":{
    "author":"sccqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqz6sxn0",
    "extraData":[

    ],
    "hash":"0x0e9cbbe0ecc774de3b5d05827ffb5c541bc7b7ff63de253d17272cf0fea1b7af",
    "number":5,
    "transactions":[
      {
        "action":{
          "type":"pay",
          "quantity":"0x3b9aca00",
          "receiver":"sccqra5felweesff3epv9wfu05a47sxh89yuvzw7mqd"
        },
        "blockHash":"0x0e9cbbe0ecc774de3b5d05827ffb5c541bc7b7ff63de253d17272cf0fea1b7af",
        "blockNumber":5,
        "fee":"0x5f5e100",
        "hash":"0x3ff9b02427ac04c06260928168775bca5a3da96ae6995041e197d42e71ab68b6",
        "networkId":"sc",
        "seq": 4,
        "transactionIndex":0,
        "sig":"0x4621da0344d8888c5076cc0a3cc7fd7a7e3a761ba812c95f807c050a4e5ec6b7120fa99fdf502ed088ed61eb6d5fe44f44c280e97c7702d5127640d7a8a6d7e401"
      }
    ],
    "transactionsRoot":"0xa4a8229a90d91e9a38b17f95c9ac2d01f46b10553e62c68df5bbfe1cc5b3e164",
    "parentHash":"0xbc4f7e7b1dded863c500147243d78436ca297bfae64e1ec2d17396286cf14b6e",
    "seal":[

    ],
    "stateRoot":"0x4cdbde0340558aa7116975a170f004af3b6343f5bf0354dadd1815d22ed12da7",
    "timestamp":1536924583
  },
  "id":null
}

Back to List of methods

chain_getBlockByHash

Gets the block with the given hash.

Params

  1. hash: H256

Returns

null | Block

Errors: Invalid Params

Request Example

  curl \
    -H 'Content-Type: application/json' \
    -d '{"jsonrpc": "2.0", "method": "chain_getBlockByHash", "params": ["0xfc196ede542b03b55aee9f106004e7e3d7ea6a9600692e964b4735a260356b50"], "id": null}' \
    localhost:8080

Response Example

{
  "jsonrpc":"2.0",
  "result":{
    "author":"cccqzzpxln6w5zrhmfju3zc53w6w4y6s95mf5lfasfn",
    "extraData":[

    ],
    "hash":"0xfc196ede542b03b55aee9f106004e7e3d7ea6a9600692e964b4735a260356b50",
    "number":5,
    "transactions":[
      {
        "action":{
          "type":"pay",
          "quantity":"0xa",
          "receiver": "cccqzn9jjm3j6qg69smd7cn0eup4w7z2yu9myd6c4d7"
        },
        "blockHash":"0xfc196ede542b03b55aee9f106004e7e3d7ea6a9600692e964b4735a260356b50",
        "blockNumber":5,
        "fee":"0xa",
        "hash":"0xdb7c705d02e8961880783b4cb3dc051c41e551ade244bed5521901d8de190fc6",
        "networkId":"cc",
        "seq": 4,
        "transactionIndex":0,
        "sig":"0x291d932e55162407eb01915923d68cf78df4815a25fc6033488b644bda44b02251123feac3a3c56a399a2b32331599fd50b7a39ec2c1a2325e37f383c6aeedc301"
      }
    ],
    "transactionsRoot":"0x0270d11d2bd21a0ec8e78d1c4e918103d7c4b02fdf734051231cb9eea90ae88e",
    "parentHash":"0xddf9fece0c6dee067a409e73a299bca21cec2d8300dff45739a5b76c680f378d",
    "seal":[

    ],
    "stateRoot":"0x898961f82629a47ade064f15d3902a455379cb082e62d3995f21050df3f553dc",
    "timestamp":1531583888
  }
  "id":null
}

Back to List of methods

chain_getBlockTransactionCountByHash

Gets the number of transactions within a block that corresponds with the given hash.

Params

  1. hash: H256

Returns

null | number

Errors: Invalid Params

Request Example

  curl \
    -H 'Content-Type: application/json' \
    -d '{"jsonrpc": "2.0", "method": "chain_getBlockTransactionCountByHash", "params": ["0xfc196ede542b03b55aee9f106004e7e3d7ea6a9600692e964b4735a260356b50"], "id": null}' \
    localhost:8080

Response Example

{"jsonrpc":"2.0","result":1,"id":null}

Back to List of methods

chain_getTransaction

Gets a transaction with the given hash.

Params

  1. transaction hash - H256

Returns

null or Transaction

Errors: Invalid Params

Request Example

  curl \
    -H 'Content-Type: application/json' \
    -d '{"jsonrpc": "2.0", "method": "chain_getTransaction", "params": ["0xdb7c705d02e8961880783b4cb3dc051c41e551ade244bed5521901d8de190fc6"], "id": null}' \
    localhost:8080

Response Example

{
    "jsonrpc": "2.0",
    "result": {
        "action": {
          "type":"pay",
          "quantity":"0xa",
          "receiver": "cccqzn9jjm3j6qg69smd7cn0eup4w7z2yu9myd6c4d7"
        },
        "blockHash": "0xfc196ede542b03b55aee9f106004e7e3d7ea6a9600692e964b4735a260356b50",
        "blockNumber": 5,
        "fee": "0xa",
        "hash": "0xdb7c705d02e8961880783b4cb3dc051c41e551ade244bed5521901d8de190fc6",
        "networkId": "cc",
        "seq": 4,
        "transactionIndex": 0,
        "sig":"0x291d932e55162407eb01915923d68cf78df4815a25fc6033488b644bda44b02251123feac3a3c56a399a2b32331599fd50b7a39ec2c1a2325e37f383c6aeedc301"
    }
    "id": null,
}

Back to List of methods

chain_containsTransaction

Returns true if the transaction with the given hash is in the chain.

Params

  1. transaction hash - H256

Returns

boolean

Errors: Invalid Params

Request Example

  curl \
    -H 'Content-Type: application/json' \
    -d '{"jsonrpc": "2.0", "method": "chain_containsTransaction", "params": ["0xad708d48755ac36685280a45ec213941e21c41644c781bf2f487fd6c7e4b2ebb"], "id": null}' \
    localhost:8080

Response Example

{
  "jsonrpc":"2.0",
  "result": true,
  "id":null
}

Back to List of methods

chain_getSeq

Gets a seq of an account of the given address, at state of the given blockNumber.

Params

  1. address: PlatformAddress
  2. block number: number | null

Returns

null | number - It returns null when the given block number is invalid.

Errors: KVDB Error, Invalid Params, Invalid NetworkId

Request Example

  curl \
    -H 'Content-Type: application/json' \
    -d '{"jsonrpc": "2.0", "method": "chain_getSeq", "params": ["cccqzn9jjm3j6qg69smd7cn0eup4w7z2yu9myd6c4d7", null], "id": null}' \
    localhost:8080

Response Example

{
  "jsonrpc":"2.0",
  "result": 84,
  "id":null
}

Back to List of methods

chain_getBalance

Gets a balance of an account of the given address, at the state of the given blockNumber.

Params

  1. address: PlatformAddress
  2. block number: number | null

Returns

null | U64 - It returns null when the given block number is invalid.

Errors: KVDB Error, Invalid Params, Invalid NetworkId

Request Example

  curl \
    -H 'Content-Type: application/json' \
    -d '{"jsonrpc": "2.0", "method": "chain_getBalance", "params": ["cccqzn9jjm3j6qg69smd7cn0eup4w7z2yu9myd6c4d7", null], "id": null}' \
    localhost:8080

Response Example

{
  "jsonrpc":"2.0",
  "result":"0xe8d4a50dd0",
  "id":null
}

Back to List of methods

chain_getMinTransactionFee

Gets the min cost of the transaction. It returns null if the first parameter is an invalid transaction type or the second parameter is larger than the current best block.

Params

  1. transaction type - string
  2. block number - number | null

Returns

number | null

Errors: Invalid Params

Request Example

  curl \
    -H 'Content-Type: application/json' \
    -d '{"jsonrpc": "2.0", "method": "chain_getMinTransactionFee", "params": ["pay", 3], "id": 7}' \
    localhost:8080

Response Example

{
  "jsonrpc":"2.0",
  "result":100,
  "id":7
}

Back to List of methods

chain_getCommonParams

Gets the common parameters. It returns null if the block number parameter is larger than the current best block.

Params

  1. block number - number | null

Returns

CommonParams | null

Errors: Invalid Params

Request Example

  curl \
    -H 'Content-Type: application/json' \
    -d '{"jsonrpc": "2.0", "method": "chain_getCommonParams", "params": [3], "id": 7}' \
    localhost:8080

Response Example

{
  "jsonrpc":"2.0",
  "result":{
    "maxExtraDataSize":"0x20",
    "networkID":"tc",
    "maxBodySize":4194304,
    "snapshotPeriod":16384
  },
  "id":7
}

Back to List of methods

chain_getNetworkId

Return the nework id that is used in this chain.

Params

No parameters

Returns

number

Request Example

  curl \
    -H 'Content-Type: application/json' \
    -d '{"jsonrpc": "2.0", "method": "chain_getNetworkId", "params": [], "id": 6}' \
    localhost:8080

Response Example

{
  "jsonrpc":"2.0",
  "result": 17,
  "id":6
}

Back to List of methods

chain_getPossibleAuthors

Returns the list of accounts that can generate the blocks at the given block number.

It returns null if anyone can generate the block. Only PoW and Solo chains can return null. Other chains never return null.

The possible authors of the genesis block are always in the list that contains only the author of the genesis block, regardless of the chain types.

Params

  1. block number: number | null

Returns

null | PlatformAddress[]

Request Example

  curl \
    -H 'Content-Type: application/json' \
    -d '{"jsonrpc": "2.0", "method": "chain_getPossibleAuthors", "params": [null], "id": "who-can-be-authors"}' \
    localhost:8080

Response Example

{
  "jsonrpc":"2.0",
  "result": ["tccq94guhkrfndnehnca06dlkxcfuq0gdlamvw9ga4f", "tccq8p9hr53lnxnhzcn0d065lux7etz22azaca786tt", "tccq8fj6lxn9tchqdqqe93yaga6fzxh5rndzu8k2gdw", "tccq9y6e0k6af9058qq4h4ffpt9xmat2vkeyue23j8y"],
  "id": "who-can-be-authors"
}

Back to List of methods

mempool_sendSignedTransaction

Sends a signed transaction, returning its hash.

Params

  1. bytes: hexadecimal string - RLP encoded hex string of SignedTransaction

Returns

H256 - transaction hash

Errors: Invalid RLP, Verification Failed, Already Imported, Not Enough Balance, Too Low Fee, Too Cheap to Replace, Invalid Seq, Invalid Params, Invalid NetworkId

Request Example

  curl \
    -H 'Content-Type: application/json' \
    -d '{"jsonrpc": "2.0", "method": "mempool_sendSignedTransaction", "params": ["0xf85e040a11d70294a6594b7196808d161b6fb137e781abbc251385d90ab841291d932e55162407eb01915923d68cf78df4815a25fc6033488b644bda44b02251123feac3a3c56a399a2b32331599fd50b7a39ec2c1a2325e37f383c6aeedc301"], "id": null}' \
    localhost:8080

Response Example

{
  "jsonrpc":"2.0",
  "result":"0xdb7c705d02e8961880783b4cb3dc051c41e551ade244bed5521901d8de190fc6",
  "id":null
}

Back to List of methods

mempool_getErrorHint

Gets a hint to find out why the transaction failed.

Params

  1. transaction hash - H256

Returns

null | string - null if there is no hint, string if the transaction failed.

Errors: Invalid Params

Request Example

  curl \
    -H 'Content-Type: application/json' \
    -d '{"jsonrpc": "2.0", "method": "mempool_getErrorHint", "params": ["0x31de93320082d6d5f0026fca4fe513cb76197dd2ad99cb0802040801148ec717"], "id": null}' \
    localhost:8080

Response Example

{
  "jsonrpc":"2.0",
  "result":"Text verification has failed: Invalid Signature",
  "id":null
}

Back to List of methods

mempool_deleteAllPendingTransactions

Deletes all pending transactions in both current and future queues.

Params

No parameters.

Returns

null

Request Example

  curl \
    -H 'Content-Type: application/json' \
    -d '{"jsonrpc": "2.0", "method": "mempool_deleteAllPendingTransactions", "params": [], "id": null}' \
    localhost:8080

Response Example

{"jsonrpc":"2.0","result":null,"id":null}

Back to List of methods

mempool_getPendingTransactions

Gets transactions that have insertion_timestamps within the given range from the current transaction queue.

Params

  1. from: number | null - The lower bound of collected pending transactions. If null, there is no lower bound.
  2. to: number | null - The upper bound of collected pending transactions. If null, there is no upper bound.
  3. future_included: boolean - The parameter to include future transactions. If true, future transactions are included.

Returns

{ transactions: Transaction[], lastTimestamp: number }

Request Example

  curl \
    -H 'Content-Type: application/json' \
    -d '{"jsonrpc": "2.0", "method": "mempool_getPendingTransactions", "params": [null, null,true], "id": null}' \
    localhost:8080

Response Example

{
  "jsonrpc":"2.0",
  "result":{
    "lastTimestamp": null,
    "transactions": [{
      "blockHash":null,
      "blockNumber":null,
      "fee":"0xa",
      "hash":"0x8ae3363ccdcc02d8d662d384deee34fb89d1202124e8065f0d6c84ab31e68d8a",
      "networkId":"cc",
      "seq":"0x0",
      "transactionIndex":null,
      "r":"0x22605d6b9fb713d3a415e02eeed8b4a630e0d867c91bf7d9b7721f94159c0fe1",
      "s":"0x772f19f1c27f1db8b28289caa9e99ad756878fd56b2415c25cd47cc737f7e0c2",
      "transactions":[
        {
          "pay":{
            "seq": 1,
            "receiver": "cccqzn9jjm3j6qg69smd7cn0eup4w7z2yu9myd6c4d7",
            "value":"0x0"
          }
        }
      ],
      "v":0
    }]
  },
  "id":null
}

Back to List of methods

mempool_getPendingTransactionsCount

Returns a count of the transactions that have insertion_timestamps within the given range from the transaction queues.

Params

  1. from: number | null - The lower bound of collected pending transactions. If null, there is no lower bound.
  2. to: number | null - The upper bound of collected pending transactions. If null, there is no upper bound.
  3. future_included: boolean - The parameter to count future transactions. If true, future transactions are also counted.

Returns

number

Request Example

  curl \
    -H 'Content-Type: application/json' \
    -d '{"jsonrpc": "2.0", "method": "mempool_getPendingTransactionsCount", "params": [null, null,true], "id": null}' \
    localhost:8080

Response Example

{
    "jsonrpc":"2.0",
    "result":4,
    "id":null
}

Back to List of methods

engine_getCustomActionData

Gets custom action data for given custom action handler id and rlp encoded key.

Params

  1. handlerId: number
  2. bytes: string
  3. blockNumber: number | null

Returns

string

Request Example

  curl \
    -H 'Content-Type: application/json' \
    -d '{"jsonrpc": "2.0", "method": "engine_getCustomActionData", "params": [1,"0xcd8c6d6574616461746120686974",null], "id": 411}' \
    localhost:8080

Response Example

{
  "jsonrpc":"2.0",
  "result":"0c",
  "id":411
}

Back to List of methods

net_localKeyFor

Get a key to communicate with the given address

Params

  1. address: string
  2. port: number

Returns

The 256-bit public key.

Errors: Invalid Params

Request Example

  curl \
    -H 'Content-Type: application/json' \
    -d '{"jsonrpc": "2.0", "method": "net_localKeyFor", "params": ["192.168.0.3", 3485], "id": 5}' \
    localhost:8080

Response Example

{
  "jsonrpc":"2.0",
  "result": "0x0b3f1e817ced530a586f029e66831f4d47b8fffa5eef0ba118f0e9dc1dd9b698",
  "id":5
}

Back to List of methods

net_registerRemoteKeyFor

Register the remote public key to communicate with the given address

Params

  1. address: string
  2. port: number
  3. remote_public_key: string

Returns

The 256-bit local public key.

Errors: Invalid Params

Request Example

  curl \
    -H 'Content-Type: application/json' \
    -d '{"jsonrpc": "2.0", "method": "net_registerRemoteKeyFor", "params": ["192.168.0.3", 3485, "0x0b3f1e817ced530a586f029e66831f4d47b8fffa5eef0ba118f0e9dc1dd9b698"], "id": 5}' \
    localhost:8080

Response Example

{
  "jsonrpc":"2.0",
  "result": "0x46f85ec82c7859c29b0e51a412a3842b1f360f8983a66038bc37b37872f144b1",
  "id":5
}

Back to List of methods

net_connect

Connect to the given address.

Params

  1. address: string
  2. port: number

Returns

null

Errors: Invalid Params

Request Example

  curl \
    -H 'Content-Type: application/json' \
    -d '{"jsonrpc": "2.0", "method": "net_connect", "params": ["192.168.0.3", 3485], "id": 5}' \
    localhost:8080

Response Example

{
  "jsonrpc":"2.0",
  "result":null,
  "id":5
}

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net_isConnected

Check whether the connection is established.

Params

  1. address: string
  2. port: number

Returns

bool

Errors: Invalid Params

Request Example

  curl \
    -H 'Content-Type: application/json' \
    -d '{"jsonrpc": "2.0", "method": "net_isConnected", "params": ["192.168.0.3", 3485], "id": 6}' \
    localhost:8080

Response Example

{
  "jsonrpc":"2.0",
  "result":true,
  "id":6
}

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net_disconnect

Disconnect the connection from the given address.

Params

  1. address: string
  2. port: number

Returns

null

Errors: Not Conntected, Invalid Params

Request Example

  curl \
    -H 'Content-Type: application/json' \
    -d '{"jsonrpc": "2.0", "method": "net_disconnect", "params": ["192.168.0.3", 3485], "id": 6}' \
    localhost:8080

Response Example

{
  "jsonrpc":"2.0",
  "result":null,
  "id":6
}

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net_getPeerCount

Return the count of peers which the client is connected to.

Params

No parameters

Returns

number

Request Example

  curl \
    -H 'Content-Type: application/json' \
    -d '{"jsonrpc": "2.0", "method": "net_getPeerCount", "params": [], "id": 6}' \
    localhost:8080

Response Example

{
  "jsonrpc":"2.0",
  "result": 34,
  "id":6
}

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net_getEstablishedPeers

Return the socket addresses of established peers.

Params

No parameters

Returns

string[]

Request Example

  curl \
    -H 'Content-Type: application/json' \
    -d '{"jsonrpc": "2.0", "method": "net_getEstablishedPeers", "params": [], "id": 3}' \
    localhost:8080

Response Example

{
  "jsonrpc":"2.0",
  "result": ["1.2.3.4:3485", "1.2.3.5:3485"],
  "id":3
}

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net_getPort

Return the port number on which the client is listening for peers.

Params

No parameters

Returns

number

Request Example

  curl \
    -H 'Content-Type: application/json' \
    -d '{"jsonrpc": "2.0", "method": "net_getPort", "params": [], "id": 6}' \
    localhost:8080

Response Example

{
  "jsonrpc":"2.0",
  "result": 3485,
  "id":6
}

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net_addToWhitelist

Adds the CIDR block address to the whitelist.

Params

  1. address: string
  2. tag: null | string

Returns

null

Request Example

  curl \
    -H 'Content-Type: application/json' \
    -d '{"jsonrpc": "2.0", "method": "net_addToWhitelist", "params": ["1.2.3.0/24", "tag"], "id": 6}' \
    localhost:8080

Response Example

{
  "jsonrpc":"2.0",
  "result": null,
  "id":6
}

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net_removeFromWhitelist

Removes the CIDR block address from the whitelist.

Params

  1. address: string

Returns

null

Request Example

  curl \
    -H 'Content-Type: application/json' \
    -d '{"jsonrpc": "2.0", "method": "net_removeFromWhitelist", "params": ["1.2.3.0/24"], "id": 6}' \
    localhost:8080

Response Example

{
  "jsonrpc":"2.0",
  "result": null,
  "id":6
}

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net_addToBlacklist

Adds the CIDR block address to the blacklist.

Params

  1. address: string
  2. tag: null | string

Returns

null

Request Example

  curl \
    -H 'Content-Type: application/json' \
    -d '{"jsonrpc": "2.0", "method": "net_addToBlacklist", "params": ["1.2.3.4", "tag"], "id": 6}' \
    localhost:8080

Response Example

{
  "jsonrpc":"2.0",
  "result": null,
  "id":6
}

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net_removeFromBlacklist

Removes the CIDR block address from the blacklist.

Params

  1. address: string

Returns

null

Request Example

  curl \
    -H 'Content-Type: application/json' \
    -d '{"jsonrpc": "2.0", "method": "net_removeFromBlacklist", "params": ["1.2.3.4"], "id": 6}' \
    localhost:8080

Response Example

{
  "jsonrpc":"2.0",
  "result": null,
  "id":6
}

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net_enableWhitelist

Enables whitelist.

Params

No parameters

Returns

null

Request Example

  curl \
    -H 'Content-Type: application/json' \
    -d '{"jsonrpc": "2.0", "method": "net_enableWhitelist", "params": [], "id": 6}' \
    localhost:8080

Response Example

{
  "jsonrpc":"2.0",
  "result": null,
  "id":6
}

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net_disableWhitelist

Disables whitelist.

Params

No parameters

Returns

null

Request Example

  curl \
    -H 'Content-Type: application/json' \
    -d '{"jsonrpc": "2.0", "method": "net_disableWhitelist", "params": [], "id": 6}' \
    localhost:8080

Response Example

{
  "jsonrpc":"2.0",
  "result": null,
  "id":6
}

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net_enableBlacklist

Enables blacklist.

Params

No parameters

Returns

null

Request Example

  curl \
    -H 'Content-Type: application/json' \
    -d '{"jsonrpc": "2.0", "method": "net_enableBlacklist", "params": [], "id": 6}' \
    localhost:8080

Response Example

{
  "jsonrpc":"2.0",
  "result": null,
  "id":6
}

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net_disableBlacklist

Disables blacklist.

Params

No parameters

Returns

null

Request Example

  curl \
    -H 'Content-Type: application/json' \
    -d '{"jsonrpc": "2.0", "method": "net_disableBlacklist", "params": [], "id": 6}' \
    localhost:8080

Response Example

{
  "jsonrpc":"2.0",
  "result": null,
  "id":6
}

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net_getWhitelist

Gets the CIDR block addresses in the whitelist.

Params

No parameters

Returns

{ list: string[][], enabled: bool }

Request Example

  curl \
    -H 'Content-Type: application/json' \
    -d '{"jsonrpc": "2.0", "method": "net_getWhitelist", "params": [], "id": 6}' \
    localhost:8080

Response Example

{
  "jsonrpc":"2.0",
  "result": { "list": [["1.2.3.0/24", "tag1"], ["1.2.3.5/32", "tag2"], ["1.2.3.6/32", "tag3"]], "enabled": true },
  "id":6
}

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net_getBlacklist

Gets the CIDR block addresses in the blacklist.

Params

No parameters

Returns

{ list: string[][], enabled: bool }

Request Example

  curl \
    -H 'Content-Type: application/json' \
    -d '{"jsonrpc": "2.0", "method": "net_getBlacklist", "params": [], "id": 6}' \
    localhost:8080

Response Example

{
  "jsonrpc":"2.0",
  "result": { "list": [["1.2.3.0/22", "tag1"], ["1.2.3.5/32", "tag2"], ["1.2.3.6/32", "tag3"]], "enabled": false },
  "id":6
}

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net_recentNetworkUsage

Gets the recent network usage. The return type is an object. The key of the object is a string, but what the keys are depend on the implementation. The value of the object is the size of bytes that the node sent in the recent period. The exact timespan of the recent is also an implementation dependent.

Params

No parameters

Returns

{ string: number }

Request Example

  curl \
    -H 'Content-Type: application/json' \
    -d '{"jsonrpc": "2.0", "method": "net_recentNetworkUsage", "params": [], "id": 6}' \
    localhost:8080

Response Example

{
  "jsonrpc":"2.0",
  "result":{"::handshake":750,"::negotiation":2210,"block-propagation":13445,"discovery":1667,"tendermint":164},
  "id":6
}

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account_getList

Gets a list of accounts.

Params

No parameters

Returns

PlatformAddress[]

Errors: Keystore Error

Request Example

curl \
    -H 'Content-Type: application/json' \
    -d '{"jsonrpc": "2.0", "method": "account_getList", "params": [], "id": 6}' \
    localhost:8080

Response Example

{
  "jsonrpc":"2.0",
  "result":["cccqqccmmu8mrwq7lxzz72d4ukaxemzmv3tvues8uwy"],
  "id":6
}

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account_create

Creates a new account.

Params

  1. password: string | null

Returns

PlatformAddress

Errors: Keystore Error, Invalid Params

Request Example

curl \
    -H 'Content-Type: application/json' \
    -d '{"jsonrpc": "2.0", "method": "account_create", "params": [], "id": 6}' \
    localhost:8080

Response Example

{
  "jsonrpc":"2.0",
  "result":"cccqqccmmu8mrwq7lxzz72d4ukaxemzmv3tvues8uwy",
  "id":6
}

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account_importRaw

Imports a secret key and add the corresponding account.

Params

  1. secret: H512
  2. password: string | null

Returns

PlatformAddress

Errors: Keystore Error, Key Error, Already Exists, Invalid Params

Request Example

curl \
    -H 'Content-Type: application/json' \
    -d '{"jsonrpc": "2.0", "method": "account_importRaw", "params": ["5c681224c650e9c96af5239991d38cc3ba2abba6b43926c35fc5c0439c7b9efa0b3f1e817ced530a586f029e66831f4d47b8fffa5eef0ba118f0e9dc1dd9b698"], "id": 6}' \
    localhost:8080

Response Example

{
  "jsonrpc":"2.0",
  "result":"cccq99c90k2lmu3l5e6z5hajhvwsh57v60845sfdk74",
  "id":6
}

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account_unlock

Unlocks the specified account for use.

It will default to 300 seconds. Passing 0 unlocks the account indefinitely.

Params

  1. account: PlatformAddress
  2. password: string
  3. duration: number | null

Returns

null

Errors: Keystore Error, Wrong Password, No Such Account, Invalid Params, Invalid NetworkId

Request Example

curl \
    -H 'Content-Type: application/json' \
    -d '{"jsonrpc": "2.0", "method": "account_unlock", "params": ["cccqqccmmu8mrwq7lxzz72d4ukaxemzmv3tvues8uwy", "1234", 0], "id": 6}' \
    localhost:8080

Response Example

{
  "jsonrpc":"2.0",
  "result": null,
  "id":6
}

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account_sign

Calculates the account's signature for a given message.

Params

  1. message: H256
  2. account: PlatformAddress
  3. password: string | null

Returns

Signature

Errors: Keystore Error, Wrong Password, No Such Account, Not Unlocked, Invalid Params, Invalid NetworkId

Request Example

curl \
    -H 'Content-Type: application/json' \
    -d '{"jsonrpc": "2.0", "method": "account_sign", "params": ["0000000000000000000000000000000000000000000000000000000000000000", "cccqqfz3sx7fr7uxqa5kl63qjdw9zrntru5kcdsjywj"], "id": 6}' \
    localhost:8080

Response Example

{
  "jsonrpc":"2.0",
  "result":"0xff7e8928f7758a64b9ea6c53f9945cdd223740675ac6ac6da625306d3966f8197523e00d56844ddb70631d44f045f4d83cc183a267c3182ab04c2f459c8289f501",
  "id":6
}

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account_sendTransaction

Sends a transaction by signing it with the account’s private key. It automatically fills the seq if the seq is not given.

Params

  1. transction: UnsignedTransaction
  2. account: PlatformAddress
  3. passphrase: string | null

Returns

{ hash: H256, seq: number } - the hash and seq of the transaction

Errors: Keystore Error, Wrong Password, No Such Account, Not Unlocked, Invalid Params, Invalid NetworkId

Request Example

curl \
    -H 'Content-Type: application/json' \
    -d '{"jsonrpc": "2.0", "method": "account_sendTransaction", "params": [{"action":{ "type":"pay", "quantity":"0x3b9aca00", "receiver":"sccqra5felweesff3epv9wfu05a47sxh89yuvzw7mqd" }, "fee":"0x5f5e100", "networkId":"sc", "seq": null}, "cccqqfz3sx7fr7uxqa5kl63qjdw9zrntru5kcdsjywj", null], "id": 6}' \
    localhost:8080

Response Example

{
  "jsonrpc":"2.0",
  "result": {"seq": 999999999440, "hash":"0x8ae3363ccdcc02d8d662d384deee34fb89d1202124e8065f0d6c84ab31e68d8a"},
  "id":6
}

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account_changePassword

Changes the account's password.

Params

  1. account: PlatformAddress
  2. old_password: String
  3. new_password: String

Returns

null

Errors: Keystore Error, Wrong Password, No Such Account, Invalid Params, Invalid NetworkId

Request Example

curl \
    -H 'Content-Type: application/json' \
    -d '{"jsonrpc": "2.0", "method": "account_changePassword", "params": ["cccqqccmmu8mrwq7lxzz72d4ukaxemzmv3tvues8uwy", "1234", "5678"], "id": 6}' \
    localhost:8080

Response Example

{
  "jsonrpc":"2.0",
  "result":null,
  "id":6
}

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devel_getStateTrieKeys

Gets keys of the state trie with the given offset and limit.

Params

  1. offset: number
  2. limit: number

Returns

H256[] with maximum length limit

Request Example

  curl \
    -H 'Content-Type: application/json' \
    -d '{"jsonrpc": "2.0", "method": "devel_getStateTrieKeys", "params": [0, 1], "id": null}' \
    localhost:8080

Response Example

{
  "jsonrpc":"2.0",
  "result":[
    "0x00acf5cba5c53e11f1512b8b480521cb546e7a17a96235a9282f6253b90de043"
  ],
  "id":null
}

Back to List of methods

devel_getStateTrieValue

Gets the value of the state trie with the given key.

Params

  1. key: string

Returns

string[] - each string is RLP encoded

Request Example

  curl \
    -H 'Content-Type: application/json' \
    -d '{"jsonrpc": "2.0", "method": "devel_getStateTrieValue", "params": ["0x00acf5cba5c53e11f1512b8b480521cb546e7a17a96235a9282f6253b90de043"], "id": null}' \
    localhost:8080

Response Example

{
  "jsonrpc":"2.0",
  "result":[
    "0x20d560025f3a1c6675cb32384355ae05b224a3473ae17d3d15b6aa164af7d717",
    "0xf84541a053000000000000002ab33f741ba153ff1ffdf1107845828637c864d5360e4932a00000000000000000000000000000000000000000000000000000000000000000c06f"
  ],
  "id":null
}

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devel_snapshot

Snapshot the state of the given block hash.

Params

  1. key: H256

Returns

Request Example

  curl \
    -H 'Content-Type: application/json' \
    -d '{"jsonrpc": "2.0", "method": "devel_snapshot", "params": ["0xfc196ede542b03b55aee9f106004e7e3d7ea6a9600692e964b4735a260356b50"], "id": null}' \
    localhost:8080

Response Example

{
  "jsonrpc":"2.0",
  "result":[],
  "id":null
}

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devel_startSealing

Starts and enables sealing blocks by the miner.

Params

No parameters

Returns

null

Request Example

  curl \
    -H 'Content-Type: application/json' \
    -d '{"jsonrpc": "2.0", "method": "devel_startSealing", "params": [], "id": null}' \
    localhost:8080

Response Example

{
  "jsonrpc":"2.0",
  "result":null,
  "id":null
}

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devel_stopSealing

Stops and disables sealing blocks by the miner.

Params

No parameters

Returns

null

Request Example

  curl \
    -H 'Content-Type: application/json' \
    -d '{"jsonrpc": "2.0", "method": "devel_stopSealing", "params": [], "id": null}' \
    localhost:8080

Response Example

{
  "jsonrpc":"2.0",
  "result":null,
  "id":null
}

Back to List of methods

devel_getBlockSyncPeers

Get peers in Block Sync module.

Params

No parameters

Returns

string[]

Request Example

  curl \
    -H 'Content-Type: application/json' \
    -d '{"jsonrpc": "2.0", "method": "devel_getBlockSyncPeers", "params": [], "id": 3}' \
    localhost:8080

Response Example

{
  "jsonrpc":"2.0",
  "result": ["1.2.3.4:3485", "1.2.3.5:3485"],
  "id":3
}

Back to List of methods

devel_getPeerBestBlockHashes

Get IP address and best block hash of each peer.

Params

No parameters

Returns

[ 'string', 'H256' ][]

Request Example

  curl \
    -H 'Content-Type: application/json' \
    -d '{"jsonrpc": "2.0", "method": "devel_getPeerBestBlockHashes", "params": [], "id": 3}' \
    localhost:8080

Response Example

{
  "jsonrpc":"2.0",
  "result": [
    ["1.2.3.4:3485", "0x56642f04d519ae3262c7ba6facf1c5b11450ebaeb7955337cfbc45420d573077"], 
    ["1.2.3.5:3485", "0x7f7104b580f9418d444560009e5a92a4573d42d2c51cd0c6045afdc761826249"]
  ],
  "id":3
}

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devel_getTargetBlockHashes

Get hashes of target blocks

Params

No parameters

Returns

'H256[]

Request Example

  curl \
    -H 'Content-Type: application/json' \
    -d '{"jsonrpc": "2.0", "method": "devel_getTargetBlockHashes", "params": [], "id": 3}' \
    localhost:8080

Response Example

{
  "jsonrpc":"2.0",
  "result": [
    "0x56642f04d519ae3262c7ba6facf1c5b11450ebaeb7955337cfbc45420d573077",
    "0x7f7104b580f9418d444560009e5a92a4573d42d2c51cd0c6045afdc761826249"
    ],
  "id":3
}

Back to List of methods