binance_us_subaccount_transfer

THE RISK

Critical Risk

This tool directly transfers funds/assets between accounts, which is a core financial operation that moves money and creates financial obligations. The warning in the description confirms the financial nature of the operation. Given the critical nature of fund transfers and the potential for significant financial loss if misused by an AI agent, this warrants 'critical' severity.

From the tool's definition Tool description explicitly states 'Execute an asset transfer between master account and a sub-account' and warns '⚠️ This moves funds between accounts!' - this directly moves financial assets between accounts, constituting a financial obligation and…

Documented attack patterns abuse exactly the kind of access binance_us_subaccount_transfer gives an agent:

HOW TO CONTROL BINANCE_US_SUBACCOUNT_TRANSFER

PolicyLayer is an MCP gateway — it sits between your AI agents and BNB Chain MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for binance_us_subaccount_transfer:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "binance_us_subaccount_transfer": {
      "deny_if": [
        {
          "conditions": [],
          "on_deny": "Requires human approval."
        }
      ]
    }
  }
}

Any call to binance_us_subaccount_transfer is blocked until a human approves it. The rest of the server keeps working.

Create a free account and register BNB Chain MCP — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

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EXPLORE

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All 1240 BNB Chain MCP tools →

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Critical-risk tools in BNB Chain MCP → Every critical-risk tool this server exposes, in one view.
All critical-risk MCP tools → Every critical-risk tool across the catalogue, and the policy pattern that contains them.
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FAQ

What does the binance_us_subaccount_transfer tool do? +

Execute an asset transfer between master account and a sub-account. ⚠️ This moves funds between accounts!. It is categorised as a Financial tool in the BNB Chain MCP MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on binance_us_subaccount_transfer? +

Register the BNB Chain MCP server in PolicyLayer and add a rule for binance_us_subaccount_transfer: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches BNB Chain MCP. Nothing to install.

What risk level is binance_us_subaccount_transfer? +

binance_us_subaccount_transfer is a Financial tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit binance_us_subaccount_transfer? +

Yes. Add a rate_limit block to the binance_us_subaccount_transfer rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block binance_us_subaccount_transfer completely? +

Set action: deny in the PolicyLayer policy for binance_us_subaccount_transfer. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides binance_us_subaccount_transfer? +

binance_us_subaccount_transfer is provided by the BNB Chain MCP server (nirholas/bnbchain-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every BNB Chain MCP tool call.

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binance_us_subaccount_transfer

// WHAT BINANCE_US_SUBACCOUNT_TRANSFER ON BNB CHAIN MCP DOES

// THE RISK

// HOW TO CONTROL BINANCE_US_SUBACCOUNT_TRANSFER

// EXPLORE