account/balance - Cardano

Example code for the account/balance JSON-RPC method. Complete guide on how to use account/balance JSON-RPC in GetBlock Web3 documentation.

This endpoint returns the balance of an account, optionally at a historical block. Balances include ada and any native assets held by the address.

Parameters

The request body is a JSON object with the following fields.

Field	Type	Required	Description
network_identifier	object	Yes	The network to query
account_identifier	object	Yes	The account, with an address field
block_identifier	object	No	Partial identifier for a historical balance lookup

Request

cURL

curl --location --request POST 'https://go.getblock.io/<ACCESS-TOKEN>/account/balance' \
--header 'Content-Type: application/json' \
--data-raw '{
    "network_identifier": {
        "blockchain": "cardano",
        "network": "mainnet"
    },
    "account_identifier": {
        "address": "addr1qxy2lpan99fcnhhyzr8w8qk4dqz4mp7g6b8h3r2v5c9d0e1f2g3h4j5k6l7m8n9p0q"
    }
}'

JavaScript

example.js

const response = await fetch(
    'https://go.getblock.io/<ACCESS-TOKEN>/account/balance',
    {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({"network_identifier": {"blockchain": "cardano", "network": "mainnet"}, "account_identifier": {"address": "addr1qxy2lpan99fcnhhyzr8w8qk4dqz4mp7g6b8h3r2v5c9d0e1f2g3h4j5k6l7m8n9p0q"}})
    }
);
console.log(await response.json());

Python

example.py

import requests

response = requests.post(
    'https://go.getblock.io/<ACCESS-TOKEN>/account/balance',
    headers={'Content-Type': 'application/json'},
    json={"network_identifier": {"blockchain": "cardano", "network": "mainnet"}, "account_identifier": {"address": "addr1qxy2lpan99fcnhhyzr8w8qk4dqz4mp7g6b8h3r2v5c9d0e1f2g3h4j5k6l7m8n9p0q"}}
)

print(response.json())

Response

{
    "block_identifier": {
        "index": 10453789,
        "hash": "6e9e89632bc5c72030d3a486647e889c48d63e4da0643191b13566ad816d2d57"
    },
    "balances": [
        {
            "value": "71103107",
            "currency": {
                "symbol": "ADA",
                "decimals": 6
            }
        },
        {
            "value": "10000",
            "currency": {
                "symbol": "nutcoin",
                "decimals": 0,
                "metadata": {
                    "policyId": "b0d07d45fe9514f80213f4020e5a61241458be626841cde717cb38a7"
                }
            }
        }
    ]
}

Response Parameters

Field	Type	Description
block_identifier	object	The block the balance was read at
balances	array	Balances by currency, including ada and native assets
balances[].value	string	Balance amount in the currency's base unit
balances[].currency	object	Currency symbol, decimals, and native-asset metadata

Use Cases

• Balance Display: Show an address's ada and token balances

• Historical Balances: Read a balance at a past block

• Exchange Accounting: Track deposit address balances

• Portfolio Tools: Aggregate native-asset holdings

Error Handling

Error Code	Message	Description
12	Invalid account format	The requested account identifier is improperly formatted
4	Block not found	The requested block does not exist for a historical lookup
5	Internal error	The node failed to read account data