curl --request GET \
  --url https://drb.coinbase.com/api/v2/private/get_account_summary \
  --header 'Content-Type: application/json' \
  --data '
{
  "id": 2515,
  "jsonrpc": "2.0",
  "method": "private/get_account_summary",
  "params": {
    "currency": "BTC",
    "extended": true
  }
}
'

{
  "id": 2515,
  "jsonrpc": "2.0",
  "result": {
    "available_funds": 301.38059622,
    "available_withdrawal_funds": 301.35396172,
    "balance": 302.60065765,
    "block_rfq_self_match_prevention": true,
    "creation_timestamp": 1687352432143,
    "cross_collateral_enabled": false,
    "currency": "BTC",
    "delta_total": 31.602958,
    "delta_total_map": {
      "btc_usd": 31.594357699
    },
    "email": "user@example.com",
    "equity": 302.61869214,
    "estimated_liquidation_ratio": 0.10098722,
    "estimated_liquidation_ratio_map": {
      "btc_usd": 0.1009872222854525
    },
    "fee_balance": 0,
    "fees": {
      "btc_usd": {
        "future": {
          "block_trade": 0.3,
          "default": {
            "maker": -0.0001,
            "taker": 0.00035000000000000005,
            "type": "fixed"
          }
        },
        "option": {
          "block_trade": 0.625,
          "default": {
            "maker": 0.625,
            "taker": 0.625,
            "type": "relative"
          }
        },
        "perpetual": {
          "block_trade": 0.3,
          "default": {
            "maker": -0.0001,
            "taker": 0.00035000000000000005,
            "type": "fixed"
          }
        }
      }
    },
    "futures_pl": -0.32434225,
    "futures_session_rpl": -0.03258105,
    "futures_session_upl": 0.05921555,
    "id": 10,
    "initial_margin": 1.24669592,
    "interuser_transfers_enabled": false,
    "limits": {
      "limits_per_currency": false,
      "matching_engine": {
        "cancel_all": {
          "burst": 250,
          "rate": 200
        },
        "guaranteed_quotes": {
          "burst": 2,
          "rate": 2
        },
        "max_quotes": {
          "burst": 10,
          "rate": 10
        },
        "quotes": {
          "burst": 500,
          "rate": 500
        },
        "spot": {
          "burst": 250,
          "rate": 200
        },
        "trading": {
          "total": {
            "burst": 250,
            "rate": 200
          }
        }
      },
      "non_matching_engine": {
        "burst": 1500,
        "rate": 1000
      }
    },
    "login_enabled": false,
    "maintenance_margin": 0.8857841,
    "margin_balance": 302.62729214,
    "margin_model": "segregated_sm",
    "mmp_enabled": false,
    "options_delta": -1.01962,
    "options_gamma": 0.00001,
    "options_gamma_map": {
      "btc_usd": 0.00001
    },
    "options_pl": -0.0065,
    "options_session_rpl": 0,
    "options_session_upl": -0.0065,
    "options_theta": 15.97071,
    "options_theta_map": {
      "btc_usd": 15.97071
    },
    "options_value": -0.0086,
    "options_vega": 0.0858,
    "options_vega_map": {
      "btc_usd": 0.0858
    },
    "portfolio_margining_enabled": false,
    "projected_delta_total": 32.613978,
    "projected_initial_margin": 1.01529592,
    "projected_maintenance_margin": 0.7543841,
    "referrer_id": null,
    "security_keys_enabled": false,
    "self_trading_extended_to_subaccounts": false,
    "self_trading_reject_mode": "cancel_maker",
    "session_rpl": -0.03258105,
    "session_upl": 0.05271555,
    "spot_reserve": 0,
    "system_name": "user",
    "total_pl": -0.33084225,
    "type": "main",
    "username": "user"
  }
}