# binance_us_custodial_balance

Get balance information for Binance.US exchange wallet and custodial sub-account. ⚠️ REQUIRES CUSTODIAL SOLUTION API KEY - Regular API keys will not work. Returns two balance arrays: - exchangeWalletBalance: Balances in your Binance.US exchange wallet - custodialAcctBalance: Balances in your Binance.US custodial sub-account Each balance includes: - asset: Asset symbol (e.g., BTC, ETH) - free: Available balance - locked: Locked balance (in orders, etc.) - inSettlement: Amount in settlement process (custodial only) - lastUpdatedTime: Last update timestamp

Agent View of the PolicyLayer registry record for `binance_us_custodial_balance`. HTML page: https://policylayer.com/tools/nirholas-binance-mcp/binance-us-custodial-balance

## Facts

- Tool: `binance_us_custodial_balance`
- Server: Binance MCP Server (`nirholas/binance-mcp`) — https://policylayer.com/tools/nirholas-binance-mcp.md
- Homepage: https://github.com/nirholas/Binance-MCP
- Risk category: Read (Low risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Allowed

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "binance_us_custodial_balance",
    "arguments": {}
  }
}
```

## Why binance_us_custodial_balance is rated Low

This tool retrieves balance information only — it reads financial account data but does not move funds, place orders, or modify any state. Severity is medium because it exposes sensitive financial account details including asset holdings across exchange and custodial wallets, which could be valuable for reconnaissance or privacy violations.

From the tool's own definition: "Get balance information for Binance.US exchange wallet and custodial sub-account"

## Use case

AI agents call binance_us_custodial_balance to retrieve information from Binance MCP Server without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

## Recommended policy (PolicyLayer)

Verdict: **Allowed**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Binance MCP Server:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "binance_us_custodial_balance": {}
  }
}
```

## Other tools on Binance MCP Server (733)

- `binance_us_cancel_all_open_orders` — Destructive — https://policylayer.com/tools/nirholas-binance-mcp/binance-us-cancel-all-open-orders.md
- `binance_us_cancel_oco` — Destructive — https://policylayer.com/tools/nirholas-binance-mcp/binance-us-cancel-oco.md
- `binance_us_cancel_order` — Destructive — https://policylayer.com/tools/nirholas-binance-mcp/binance-us-cancel-order.md
- `binance_us_cancel_replace` — Destructive — https://policylayer.com/tools/nirholas-binance-mcp/binance-us-cancel-replace.md
- `binance_us_cust_cancel_oco` — Destructive — https://policylayer.com/tools/nirholas-binance-mcp/binance-us-cust-cancel-oco.md
- `binance_us_cust_cancel_order` — Destructive — https://policylayer.com/tools/nirholas-binance-mcp/binance-us-cust-cancel-order.md
- `binance_us_cust_cancel_orders_symbol` — Destructive — https://policylayer.com/tools/nirholas-binance-mcp/binance-us-cust-cancel-orders-symbol.md
- `BinanceCancelHashRateResaleConfiguration` — Destructive — https://policylayer.com/tools/nirholas-binance-mcp/binancecancelhashrateresaleconfiguration.md
- `BinanceConvertCancelLimitOrder` — Destructive — https://policylayer.com/tools/nirholas-binance-mcp/binanceconvertcancellimitorder.md
- `BinanceCrossMarginCancelAllOrders` — Destructive — https://policylayer.com/tools/nirholas-binance-mcp/binancecrossmargincancelallorders.md
- `BinanceCrossMarginCancelOrder` — Destructive — https://policylayer.com/tools/nirholas-binance-mcp/binancecrossmargincancelorder.md
- `BinanceDeleteOpenOrders` — Destructive — https://policylayer.com/tools/nirholas-binance-mcp/binancedeleteopenorders.md
- `BinanceDeleteOrder` — Destructive — https://policylayer.com/tools/nirholas-binance-mcp/binancedeleteorder.md
- `BinanceDeleteUserDataStream` — Destructive — https://policylayer.com/tools/nirholas-binance-mcp/binancedeleteuserdatastream.md
- `BinanceDeliveryCancelAllOrders` — Destructive — https://policylayer.com/tools/nirholas-binance-mcp/binancedeliverycancelallorders.md
- `BinanceDeliveryCancelBatchOrders` — Destructive — https://policylayer.com/tools/nirholas-binance-mcp/binancedeliverycancelbatchorders.md
- `BinanceDeliveryCancelOrder` — Destructive — https://policylayer.com/tools/nirholas-binance-mcp/binancedeliverycancelorder.md
- `BinanceDeliveryCountdownCancelAll` — Destructive — https://policylayer.com/tools/nirholas-binance-mcp/binancedeliverycountdowncancelall.md
- `BinanceDisableIsolatedMarginAccount` — Destructive — https://policylayer.com/tools/nirholas-binance-mcp/binancedisableisolatedmarginaccount.md
- `BinanceFutureCancelAlgoOrder` — Destructive — https://policylayer.com/tools/nirholas-binance-mcp/binancefuturecancelalgoorder.md
- `BinanceFuturesCancelAllOpenOrders` — Destructive — https://policylayer.com/tools/nirholas-binance-mcp/binancefuturescancelallopenorders.md
- `BinanceFuturesCancelAllOrders` — Destructive — https://policylayer.com/tools/nirholas-binance-mcp/binancefuturescancelallorders.md
- `BinanceFuturesCancelBatchOrders` — Destructive — https://policylayer.com/tools/nirholas-binance-mcp/binancefuturescancelbatchorders.md
- `BinanceFuturesCancelOrder` — Destructive — https://policylayer.com/tools/nirholas-binance-mcp/binancefuturescancelorder.md
- `BinanceFuturesCOINMCancelAllOrders` — Destructive — https://policylayer.com/tools/nirholas-binance-mcp/binancefuturescoinmcancelallorders.md
- `BinanceFuturesCOINMCancelBatchOrders` — Destructive — https://policylayer.com/tools/nirholas-binance-mcp/binancefuturescoinmcancelbatchorders.md
- `BinanceFuturesCOINMCancelOrder` — Destructive — https://policylayer.com/tools/nirholas-binance-mcp/binancefuturescoinmcancelorder.md
- `BinanceFuturesUSDMCancelAllOrders` — Destructive — https://policylayer.com/tools/nirholas-binance-mcp/binancefuturesusdmcancelallorders.md
- `BinanceFuturesUSDMCancelBatchOrders` — Destructive — https://policylayer.com/tools/nirholas-binance-mcp/binancefuturesusdmcancelbatchorders.md
- `BinanceFuturesUSDMCancelOrder` — Destructive — https://policylayer.com/tools/nirholas-binance-mcp/binancefuturesusdmcancelorder.md
- …and 703 more: https://policylayer.com/tools/nirholas-binance-mcp.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=nirholas-binance-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/nirholas-binance-mcp