Parameters

Mempool representation of a declare transaction

📘
Declare v0 is no longer supported.
v1 used to declare Cairo 0 classes are deprecated and will be removed in a future Starknet version.
New Cairo 1.0 classes can only be declared via the declare v2 transaction.

Key	Required	Type	Detail
`contract_class`	✅	ContractClass	The (Cairo 1.0) class
`compiled_class_hash`	✅	String	The hash of the compiled class
`sender_address`	✅	String	Address the transaction is sent from
`max_fee`	✅	String	The maximum fee that the sender is willing to pay for the transaction
`nonce`	✅	String	The transaction nonce
`version`	✅	String	The transaction’s version. The value is 1
`signature`	✅	List<String>	Additional information given by the sender, used to validate the transaction

"params": [
    {
        "max_fee": "string",
        "version": "string",
        "signature": [
            "string"
        ],
        "nonce": "string",
        "type": "DECLARE",
        "contract_class": {
            "sierraProgram": [
                "string"
            ],
            "contractClassVersion": "string",
            "entryPointsByType": {
                "CONSTRUCTOR": [
                    {
                        "selector": "string",
                        "functionIdx": 0
                    }
                ],
                "EXTERNAL": [
                    {
                        "selector": "string",
                        "functionIdx": 0
                    }
                ],
                "L1_HANDLER": [
                    {
                        "selector": "string",
                        "functionIdx": 0
                    }
                ]
            },
            "abi": "string"
        },
        "sender_address": "0x044e5b3f0471a26bc749ffa1d8dd8e43640e05f1b33cf05cef6adee6f5b1b4cf",
        "compiled_class_hash": "string"
    }
]

Result

The transaction hash, as assigned in StarkNet.

The class hash, represented by at most 63 hex digits.

Example

Request

curl <your-endpoint> \
    -X POST \
    -H "Content-Type: application/json" \
    -d '
{
    "id": 1,
    "jsonrpc": "2.0",
    "method": "starknet_addDeclareTransaction",
    "params": [
        {
            "max_fee": "string",
            "version": "string",
            "signature": [
                "string"
            ],
            "nonce": "string",
            "type": "DECLARE",
            "contract_class": {
                "sierraProgram": [
                    "string"
                ],
                "contractClassVersion": "string",
                "entryPointsByType": {
                    "CONSTRUCTOR": [
                        {
                            "selector": "string",
                            "functionIdx": 0
                        }
                    ],
                    "EXTERNAL": [
                        {
                            "selector": "string",
                            "functionIdx": 0
                        }
                    ],
                    "L1_HANDLER": [
                        {
                            "selector": "string",
                            "functionIdx": 0
                        }
                    ]
                },
                "abi": "string"
            },
            "sender_address": "0x044e5b3f0471a26bc749ffa1d8dd8e43640e05f1b33cf05cef6adee6f5b1b4cf",
            "compiled_class_hash": "string"
        }
    ]
}
'

Return

{
    "jsonrpc": "2.0",
    "result": {
        "transaction_hash": "0x3cf80e627fc2c2512fbf84133af6e3542e739206efb26067f56bbffc1f76f23",
        "class_hash": "0x601407cf04ab1fbab155f913db64891dc749f4343bc9e535bd012234a46dc61"
    },
    "id": 1
}