JSON RPC API -3

JSON RPC API Deprecated Methods

getConfirmedBlock

DEPRECATED: Please use getBlock instead This method is expected to be removed in huione-core v2.0

Returns identity and transaction information about a confirmed block in the ledger

Parameters:#

<u64> - slot, as u64 integer
(optional) <object> - Configuration object containing the following optional fields:
    (optional) encoding: <string> - encoding for each returned Transaction, either "json", "jsonParsed", "base58" (slow), "base64". If parameter not provided, the default encoding is "json". "jsonParsed" encoding attempts to use program-specific instruction parsers to return more human-readable and explicit data in the transaction.message.instructions list. If "jsonParsed" is requested but a parser cannot be found, the instruction falls back to regular JSON encoding (accounts, data, and programIdIndex fields).
    (optional) transactionDetails: <string> - level of transaction detail to return, either "full", "signatures", or "none". If parameter not provided, the default detail level is "full".
    (optional) rewards: bool - whether to populate the rewards array. If parameter not provided, the default includes rewards.
    (optional) commitment: <string> - Commitment; "processed" is not supported. If parameter not provided, the default is "finalized".

Results:#

The result field will be an object with the following fields:

<null> - if specified block is not confirmed
<object> - if block is confirmed, an object with the following fields:
    blockhash: <string> - the blockhash of this block, as base-58 encoded string
    previousBlockhash: <string> - the blockhash of this block's parent, as base-58 encoded string; if the parent block is not available due to ledger cleanup, this field will return "11111111111111111111111111111111"
    parentSlot: <u64> - the slot index of this block's parent
    transactions: <array> - present if "full" transaction details are requested; an array of JSON objects containing:
        transaction: <object|[string,encoding]> - Transaction object, either in JSON format or encoded binary data, depending on encoding parameter
        meta: <object> - transaction status metadata object, containing null or:
            err: <object|null> - Error if transaction failed, null if transaction succeeded. TransactionError definitions
            fee: <u64> - fee this transaction was charged, as u64 integer
            preBalances: <array> - array of u64 account balances from before the transaction was processed
            postBalances: <array> - array of u64 account balances after the transaction was processed
            innerInstructions: <array|null> - List of inner instructions or null if inner instruction recording was not enabled during this transaction
            preTokenBalances: <array|undefined> - List of token balances from before the transaction was processed or omitted if token balance recording was not yet enabled during this transaction
            postTokenBalances: <array|undefined> - List of token balances from after the transaction was processed or omitted if token balance recording was not yet enabled during this transaction
            logMessages: <array|null> - array of string log messages or null if log message recording was not enabled during this transaction
            DEPRECATED: status: <object> - Transaction status
                "Ok": <null> - Transaction was successful
                "Err": <ERR> - Transaction failed with TransactionError
    signatures: <array> - present if "signatures" are requested for transaction details; an array of signatures strings, corresponding to the transaction order in the block
    rewards: <array> - present if rewards are requested; an array of JSON objects containing:
        pubkey: <string> - The public key, as base-58 encoded string, of the account that received the reward
        lamports: <i64>- number of reward lamports credited or debited by the account, as a i64
        postBalance: <u64> - account balance in lamports after the reward was applied
        rewardType: <string|undefined> - type of reward: "fee", "rent", "voting", "staking"
        commission: <u8|undefined> - vote account commission when the reward was credited, only present for voting and staking rewards
    blockTime: <i64|null> - estimated production time, as Unix timestamp (seconds since the Unix epoch). null if not available

Example:#

Request:

curl http://localhost:8899 -X POST -H "Content-Type: application/json" -d '
  {"jsonrpc": "2.0","id":1,"method":"getConfirmedBlock","params":[430, {"encoding": "json","transactionDetails":"full","rewards":false}]}
'

Result:

{
  "jsonrpc": "2.0",
  "result": {
    "blockTime": null,
    "blockhash": "3Eq21vXNB5s86c62bVuUfTeaMif1N2kUqRPBmGRJhyTA",
    "parentSlot": 429,
    "previousBlockhash": "mfcyqEXB3DnHXki6KjjmZck6YjmZLvpAByy2fj4nh6B",
    "transactions": [
      {
        "meta": {
          "err": null,
          "fee": 5000,
          "innerInstructions": [],
          "logMessages": [],
          "postBalances": [499998932500, 26858640, 1, 1, 1],
          "postTokenBalances": [],
          "preBalances": [499998937500, 26858640, 1, 1, 1],
          "preTokenBalances": [],
          "status": {
            "Ok": null
          }
        },
        "transaction": {
          "message": {
            "accountKeys": [
              "3UVYmECPPMZSCqWKfENfuoTv51fTDTWicX9xmBD2euKe",
              "AjozzgE83A3x1sHNUR64hfH7zaEBWeMaFuAN9kQgujrc",
              "SysvarS1otHashes111111111111111111111111111",
              "SysvarC1ock11111111111111111111111111111111",
              "Vote111111111111111111111111111111111111111"
            ],
            "header": {
              "numReadonlySignedAccounts": 0,
              "numReadonlyUnsignedAccounts": 3,
              "numRequiredSignatures": 1
            },
            "instructions": [
              {
                "accounts": [1, 2, 3, 0],
                "data": "37u9WtQpcm6ULa3WRQHmj49EPs4if7o9f1jSRVZpm2dvihR9C8jY4NqEwXUbLwx15HBSNcP1",
                "programIdIndex": 4
              }
            ],
            "recentBlockhash": "mfcyqEXB3DnHXki6KjjmZck6YjmZLvpAByy2fj4nh6B"
          },
          "signatures": [
            "2nBhEBYYvfaAe16UMNqRHre4YNSskvuYgx3M6E4JP1oDYvZEJHvoPzyUidNgNX5r9sTyN1J9UxtbCXy2rqYcuyuv"
          ]
        }
      }
    ]
  },
  "id": 1
}

Example:#

Request:

curl http://localhost:8899 -X POST -H "Content-Type: application/json" -d '
  {"jsonrpc": "2.0","id":1,"method":"getConfirmedBlock","params":[430, "base64"]}
'

Result:

{
  "jsonrpc": "2.0",
  "result": {
    "blockTime": null,
    "blockhash": "3Eq21vXNB5s86c62bVuUfTeaMif1N2kUqRPBmGRJhyTA",
    "parentSlot": 429,
    "previousBlockhash": "mfcyqEXB3DnHXki6KjjmZck6YjmZLvpAByy2fj4nh6B",
    "rewards": [],
    "transactions": [
      {
        "meta": {
          "err": null,
          "fee": 5000,
          "innerInstructions": [],
          "logMessages": [],
          "postBalances": [499998932500, 26858640, 1, 1, 1],
          "postTokenBalances": [],
          "preBalances": [499998937500, 26858640, 1, 1, 1],
          "preTokenBalances": [],
          "status": {
            "Ok": null
          }
        },
        "transaction": [
          "AVj7dxHlQ9IrvdYVIjuiRFs1jLaDMHixgrv+qtHBwz51L4/ImLZhszwiyEJDIp7xeBSpm/TX5B7mYzxa+fPOMw0BAAMFJMJVqLw+hJYheizSoYlLm53KzgT82cDVmazarqQKG2GQsLgiqktA+a+FDR4/7xnDX7rsusMwryYVUdixfz1B1Qan1RcZLwqvxvJl4/t3zHragsUp0L47E24tAFUgAAAABqfVFxjHdMkoVmOYaR1etoteuKObS21cc1VbIQAAAAAHYUgdNXR0u3xNdiTr072z2DVec9EQQ/wNo1OAAAAAAAtxOUhPBp2WSjUNJEgfvy70BbxI00fZyEPvFHNfxrtEAQQEAQIDADUCAAAAAQAAAAAAAACtAQAAAAAAAAdUE18R96XTJCe+YfRfUp6WP+YKCy/72ucOL8AoBFSpAA==",
          "base64"
        ]
      }
    ]
  },
  "id": 1
}

For more details on returned data: Transaction Structure Inner Instructions Structure Token Balances Structure

get Confirmed Blocks

DEPRECATED: Please use getBlocks instead This method is expected to be removed in huione-core v2.0

Returns a list of confirmed blocks between two slots

Parameters:#

<u64> - start_slot, as u64 integer
(optional) <u64> - end_slot, as u64 integer
(optional) <object> - Configuration object containing the following field:
    (optional) commitment: <string> - Commitment; "processed" is not supported. If parameter not provided, the default is "finalized".

Results:#

The result field will be an array of u64 integers listing confirmed blocks between start_slot and either end_slot, if provided, or latest confirmed block, inclusive. Max range allowed is 500,000 slots. Example:#

Request:

curl http://localhost:8899 -X POST -H "Content-Type: application/json" -d '
  {"jsonrpc": "2.0","id":1,"method":"getConfirmedBlocks","params":[5, 10]}
'

Result:

{ "jsonrpc": "2.0", "result": [5, 6, 7, 8, 9, 10], "id": 1 }

getConfirmedBlocksWithLimit

DEPRECATED: Please use get Blocks With Limit instead This method is expected to be removed in huione-core v2.0

Returns a list of confirmed blocks starting at the given slot

Parameters:#

<u64> - start_slot, as u64 integer
<u64> - limit, as u64 integer
(optional) <object> - Configuration object containing the following field:
    (optional) commitment: <string> - Commitment; "processed" is not supported. If parameter not provided, the default is "finalized".

Results:#

The result field will be an array of u64 integers listing confirmed blocks starting at start_slot for up to limit blocks, inclusive.

Example:#

Request:

curl http://localhost:8899 -X POST -H "Content-Type: application/json" -d '
  {"jsonrpc": "2.0","id":1,"method":"getConfirmedBlocksWithLimit","params":[5, 3]}
'

Result:

{ "jsonrpc": "2.0", "result": [5, 6, 7], "id": 1 }

getConfirmedSignaturesForAddress2

DEPRECATED: Please use getSignaturesForAddress instead This method is expected to be removed in huione-core v2.0

Returns signatures for confirmed transactions that include the given address in their accountKeys list. Returns signatures backwards in time from the provided signature or most recent confirmed block

Parameters:#

<string> - account address as base-58 encoded string
(optional) <object> - Configuration object containing the following fields:
    (optional) limit: <number> - maximum transaction signatures to return (between 1 and 1,000, default: 1,000).
    (optional) before: <string> - start searching backwards from this transaction signature. If not provided the search starts from the top of the highest max confirmed block.
    (optional) until: <string> - search until this transaction signature, if found before limit reached.
    (optional) commitment: <string> - Commitment; "processed" is not supported. If parameter not provided, the default is "finalized".

Results:#

The result field will be an array of transaction signature information, ordered from newest to oldest transaction:

<object>
    signature: <string> - transaction signature as base-58 encoded string
    slot: <u64> - The slot that contains the block with the transaction
    err: <object|null> - Error if transaction failed, null if transaction succeeded. TransactionError definitions
    memo: <string|null> - Memo associated with the transaction, null if no memo is present
    blockTime: <i64|null> - estimated production time, as Unix timestamp (seconds since the Unix epoch) of when transaction was processed. null if not available.

Example:#

Request:

curl http://localhost:8899 -X POST -H "Content-Type: application/json" -d '
  {
    "jsonrpc": "2.0",
    "id": 1,
    "method": "getConfirmedSignaturesForAddress2",
    "params": [
      "Vote111111111111111111111111111111111111111",
      {
        "limit": 1
      }
    ]
  }
'

Result:

{
  "jsonrpc": "2.0",
  "result": [
    {
      "err": null,
      "memo": null,
      "signature": "5h6xBEauJ3PK6SWCZ1PGjBvj8vDdWG3KpwATGy1ARAXFSDwt8GFXM7W5Ncn16wmqokgpiKRLuS83KUxyZyv2sUYv",
      "slot": 114,
      "blockTime": null
    }
  ],
  "id": 1
}

getConfirmedTransaction

DEPRECATED: Please use getTransaction instead This method is expected to be removed in huione-core v2.0

Returns transaction details for a confirmed transaction Parameters:#

<string> - transaction signature as base-58 encoded string
(optional) <object> - Configuration object containing the following optional fields:
    (optional) encoding: <string> - encoding for each returned Transaction, either "json", "jsonParsed", "base58" (slow), "base64". If parameter not provided, the default encoding is "json". "jsonParsed" encoding attempts to use program-specific instruction parsers to return more human-readable and explicit data in the transaction.message.instructions list. If "jsonParsed" is requested but a parser cannot be found, the instruction falls back to regular JSON encoding (accounts, data, and programIdIndex fields).
    (optional) commitment: <string> - Commitment; "processed" is not supported. If parameter not provided, the default is "finalized".

Results:#

<null> - if transaction is not found or not confirmed
<object> - if transaction is confirmed, an object with the following fields:
    slot: <u64> - the slot this transaction was processed in
    transaction: <object|[string,encoding]> - Transaction object, either in JSON format or encoded binary data, depending on encoding parameter
    blockTime: <i64|null> - estimated production time, as Unix timestamp (seconds since the Unix epoch) of when the transaction was processed. null if not available
    meta: <object|null> - transaction status metadata object:
        err: <object|null> - Error if transaction failed, null if transaction succeeded. TransactionError definitions
        fee: <u64> - fee this transaction was charged, as u64 integer
        preBalances: <array> - array of u64 account balances from before the transaction was processed
        postBalances: <array> - array of u64 account balances after the transaction was processed
        innerInstructions: <array|null> - List of inner instructions or null if inner instruction recording was not enabled during this transaction
        preTokenBalances: <array|undefined> - List of token balances from before the transaction was processed or omitted if token balance recording was not yet enabled during this transaction
        postTokenBalances: <array|undefined> - List of token balances from after the transaction was processed or omitted if token balance recording was not yet enabled during this transaction
        logMessages: <array|null> - array of string log messages or null if log message recording was not enabled during this transaction
        DEPRECATED: status: <object> - Transaction status
            "Ok": <null> - Transaction was successful
            "Err": <ERR> - Transaction failed with TransactionError

Example:#

Request:

curl http://localhost:8899 -X POST -H "Content-Type: application/json" -d '
  {
    "jsonrpc": "2.0",
    "id": 1,
    "method": "getConfirmedTransaction",
    "params": [
      "2nBhEBYYvfaAe16UMNqRHre4YNSskvuYgx3M6E4JP1oDYvZEJHvoPzyUidNgNX5r9sTyN1J9UxtbCXy2rqYcuyuv",
      "json"
    ]
  }
'

Result:

{
  "jsonrpc": "2.0",
  "result": {
    "meta": {
      "err": null,
      "fee": 5000,
      "innerInstructions": [],
      "postBalances": [499998932500, 26858640, 1, 1, 1],
      "postTokenBalances": [],
      "preBalances": [499998937500, 26858640, 1, 1, 1],
      "preTokenBalances": [],
      "status": {
        "Ok": null
      }
    },
    "slot": 430,
    "transaction": {
      "message": {
        "accountKeys": [
          "3UVYmECPPMZSCqWKfENfuoTv51fTDTWicX9xmBD2euKe",
          "AjozzgE83A3x1sHNUR64hfH7zaEBWeMaFuAN9kQgujrc",
          "SysvarS1otHashes111111111111111111111111111",
          "SysvarC1ock11111111111111111111111111111111",
          "Vote111111111111111111111111111111111111111"
        ],
        "header": {
          "numReadonlySignedAccounts": 0,
          "numReadonlyUnsignedAccounts": 3,
          "numRequiredSignatures": 1
        },
        "instructions": [
          {
            "accounts": [1, 2, 3, 0],
            "data": "37u9WtQpcm6ULa3WRQHmj49EPs4if7o9f1jSRVZpm2dvihR9C8jY4NqEwXUbLwx15HBSNcP1",
            "programIdIndex": 4
          }
        ],
        "recentBlockhash": "mfcyqEXB3DnHXki6KjjmZck6YjmZLvpAByy2fj4nh6B"
      },
      "signatures": [
        "2nBhEBYYvfaAe16UMNqRHre4YNSskvuYgx3M6E4JP1oDYvZEJHvoPzyUidNgNX5r9sTyN1J9UxtbCXy2rqYcuyuv"
      ]
    }
  },
  "blockTime": null,
  "id": 1
}

Example:#

Request:

curl http://localhost:8899 -X POST -H "Content-Type: application/json" -d '
  {
    "jsonrpc": "2.0",
    "id": 1,
    "method": "getConfirmedTransaction",
    "params": [
      "2nBhEBYYvfaAe16UMNqRHre4YNSskvuYgx3M6E4JP1oDYvZEJHvoPzyUidNgNX5r9sTyN1J9UxtbCXy2rqYcuyuv",
      "base64"
    ]
  }
'

Result:

{
  "jsonrpc": "2.0",
  "result": {
    "meta": {
      "err": null,
      "fee": 5000,
      "innerInstructions": [],
      "postBalances": [499998932500, 26858640, 1, 1, 1],
      "postTokenBalances": [],
      "preBalances": [499998937500, 26858640, 1, 1, 1],
      "preTokenBalances": [],
      "status": {
        "Ok": null
      }
    },
    "slot": 430,
    "transaction": [
      "AVj7dxHlQ9IrvdYVIjuiRFs1jLaDMHixgrv+qtHBwz51L4/ImLZhszwiyEJDIp7xeBSpm/TX5B7mYzxa+fPOMw0BAAMFJMJVqLw+hJYheizSoYlLm53KzgT82cDVmazarqQKG2GQsLgiqktA+a+FDR4/7xnDX7rsusMwryYVUdixfz1B1Qan1RcZLwqvxvJl4/t3zHragsUp0L47E24tAFUgAAAABqfVFxjHdMkoVmOYaR1etoteuKObS21cc1VbIQAAAAAHYUgdNXR0u3xNdiTr072z2DVec9EQQ/wNo1OAAAAAAAtxOUhPBp2WSjUNJEgfvy70BbxI00fZyEPvFHNfxrtEAQQEAQIDADUCAAAAAQAAAAAAAACtAQAAAAAAAAdUE18R96XTJCe+YfRfUp6WP+YKCy/72ucOL8AoBFSpAA==",
      "base64"
    ]
  },
  "id": 1
}

getFeeCalculatorForBlockhash

DEPRECATED: Please use is BlockhashValid or getFeeForMessage instead This method is expected to be removed in huione-core v2.0

Returns the fee calculator associated with the query blockhash, or null if the blockhash has expired

Parameters:#

<string> - query blockhash as a Base58 encoded string
(optional) <object> - Configuration object containing the following fields:
    (optional) commitment: <string> - Commitment
    (optional) minContextSlot: <number> - set the minimum slot that the request can be evaluated at.

Results:#

The result will be an RpcResponse JSON object with value equal to:

<null> - if the query blockhash has expired
<object> - otherwise, a JSON object containing:
    feeCalculator: <object>, FeeCalculator object describing the cluster fee rate at the queried blockhash

Example:#

Request:

curl http://localhost:8899 -X POST -H "Content-Type: application/json" -d '
  {
    "jsonrpc": "2.0",
    "id": 1,
    "method": "getFeeCalculatorForBlockhash",
    "params": [
      "GJxqhuxcgfn5Tcj6y3f8X4FeCDd2RQ6SnEMo1AAxrPRZ"
    ]
  }
'

Result:

{
  "jsonrpc": "2.0",
  "result": {
    "context": {
      "slot": 221
    },
    "value": {
      "feeCalculator": {
        "lamportsPerSignature": 5000
      }
    }
  },
  "id": 1
}

getFeeRateGovernor

Returns the fee rate governor information from the root bank

Parameters:#

None Results:#

The result field will be an object with the following fields:

burnPercent: <u8>, Percentage of fees collected to be destroyed
maxLamportsPerSignature: <u64>, Largest value lamportsPerSignature can attain for the next slot
minLamportsPerSignature: <u64>, Smallest value lamportsPerSignature can attain for the next slot
targetLamportsPerSignature: <u64>, Desired fee rate for the cluster
targetSignaturesPerSlot: <u64>, Desired signature rate for the cluster

Example:#

Request:

curl http://localhost:8899 -X POST -H "Content-Type: application/json" -d '
  {"jsonrpc":"2.0","id":1, "method":"getFeeRateGovernor"}
'

Result:

{
  "jsonrpc": "2.0",
  "result": {
    "context": {
      "slot": 54
    },
    "value": {
      "feeRateGovernor": {
        "burnPercent": 50,
        "maxLamportsPerSignature": 100000,
        "minLamportsPerSignature": 5000,
        "targetLamportsPerSignature": 10000,
        "targetSignaturesPerSlot": 20000
      }
    }
  },
  "id": 1
}

getFees

DEPRECATED: Please use getFeeForMessage instead This method is expected to be removed in huione-core v2.0

Returns a recent block hash from the ledger, a fee schedule that can be used to compute the cost of submitting a transaction using it, and the last slot in which the blockhash will be valid. Parameters:#

(optional) <object> - Configuration object containing the following field:
    (optional) commitment: <string> - Commitment

Results:#

The result will be an RpcResponse JSON object with value set to a JSON object with the following fields:

blockhash: <string> - a Hash as base-58 encoded string
feeCalculator: <object> - FeeCalculator object, the fee schedule for this block hash
lastValidSlot: <u64> - DEPRECATED - this value is inaccurate and should not be relied upon
lastValidBlockHeight: <u64> - last block height at which the blockhash will be valid

Example:#

Request:

curl http://localhost:8899 -X POST -H "Content-Type: application/json" -d '
  {"jsonrpc":"2.0","id":1, "method":"getFees"}
'

Result:

{
  "jsonrpc": "2.0",
  "result": {
    "context": {
      "slot": 1
    },
    "value": {
      "blockhash": "CSymwgTNX1j3E4qhKfJAUE41nBWEwXufoYryPbkde5RR",
      "feeCalculator": {
        "lamportsPerSignature": 5000
      },
      "lastValidSlot": 297,
      "lastValidBlockHeight": 296
    }
  },
  "id": 1
}

get Recent Blockhash

DEPRECATED: Please use getLatestBlockhash instead This method is expected to be removed in huione-core v2.0

Returns a recent block hash from the ledger, and a fee schedule that can be used to compute the cost of submitting a transaction using it. Parameters:#

(optional) <object> - Configuration object containing the following field:
    (optional) commitment: <string> - Commitment

Results:#

An RpcResponse containing a JSON object consisting of a string blockhash and FeeCalculator JSON object.

RpcResponse<object> - RpcResponse JSON object with value field set to a JSON object including:
blockhash: <string> - a Hash as base-58 encoded string
feeCalculator: <object> - FeeCalculator object, the fee schedule for this block hash

Example:#

Request:

curl http://localhost:8899 -X POST -H "Content-Type: application/json" -d '
  {"jsonrpc":"2.0","id":1, "method":"getRecentBlockhash"}
'

Result:

{
  "jsonrpc": "2.0",
  "result": {
    "context": {
      "slot": 1
    },
    "value": {
      "blockhash": "CSymwgTNX1j3E4qhKfJAUE41nBWEwXufoYryPbkde5RR",
      "feeCalculator": {
        "lamportsPerSignature": 5000
      }
    }
  },
  "id": 1
}

getSnapshotSlot

DEPRECATED: Please use getHighestSnapshotSlot instead This method is expected to be removed in huione-core v2.0

Returns the highest slot that the node has a snapshot for

Parameters:#

None

Results:#

<u64> - Snapshot slot

Example:#

Request:

curl http://localhost:8899 -X POST -H "Content-Type: application/json" -d '
  {"jsonrpc":"2.0","id":1, "method":"getSnapshotSlot"}
'

Result:

{ "jsonrpc": "2.0", "result": 100, "id": 1 }

Result when the node has no snapshot:

{
  "jsonrpc": "2.0",
  "error": { "code": -32008, "message": "No snapshot" },
  "id": 1
}