BinancePortfolioMarginDeleteListenKey

THE RISK

Critical Risk

Although this tool does not delete financial assets or permanent data structures, it irreversibly terminates an active user data stream connection. The 'delete' operation and permanent termination of service access aligns with the Destructive category (actions that cannot be undone).

From the tool's definition 'Close/delete a Portfolio Margin listen key. This will terminate the user data stream connection.' — the action irreversibly closes/deletes a listening connection, which cannot be undone and disrupts an active service stream.

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

HOW TO CONTROL BINANCEPORTFOLIOMARGINDELETELISTENKEY

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 BinancePortfolioMarginDeleteListenKey:

policy.json

{
  "version": "1",
  "default": "deny",
  "hide": [
    "BinancePortfolioMarginDeleteListenKey"
  ]
}

BinancePortfolioMarginDeleteListenKey disappears from the agent's tool list entirely, and any attempt to call it is denied. 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.

RESTRICT THIS TOOL →

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EXPLORE

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All 1240 BNB Chain MCP tools →

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Go deeper

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.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
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MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

What does the BinancePortfolioMarginDeleteListenKey tool do? +

Close/delete a Portfolio Margin listen key. This will terminate the user data stream connection. It is categorised as a Destructive tool in the BNB Chain MCP MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.

How do I enforce a policy on BinancePortfolioMarginDeleteListenKey? +

Register the BNB Chain MCP server in PolicyLayer and add a rule for BinancePortfolioMarginDeleteListenKey: 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 BinancePortfolioMarginDeleteListenKey? +

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

Can I rate-limit BinancePortfolioMarginDeleteListenKey? +

Yes. Add a rate_limit block to the BinancePortfolioMarginDeleteListenKey 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 BinancePortfolioMarginDeleteListenKey completely? +

Set action: deny in the PolicyLayer policy for BinancePortfolioMarginDeleteListenKey. 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 BinancePortfolioMarginDeleteListenKey? +

BinancePortfolioMarginDeleteListenKey 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.

Deterministic rules across all 1240 BNB Chain MCP tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.

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BinancePortfolioMarginDeleteListenKey

// WHAT BINANCEPORTFOLIOMARGINDELETELISTENKEY ON BNB CHAIN MCP DOES

// THE RISK

// HOW TO CONTROL BINANCEPORTFOLIOMARGINDELETELISTENKEY

// EXPLORE