BinanceOptionsDeleteListenKey

THE RISK

Critical Risk

The tool explicitly deletes a listen key and terminates the user data stream connection. This is an irreversible termination action — once the listen key is deleted and the stream is closed, the connection is ended. While it doesn't destroy financial assets, it permanently closes a session resource. 'Delete' and 'terminate' indicate irreversible destruction of the connection/key resource.

From the tool's definition Close/delete an options listen key. This will terminate the user data stream connection.

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

HOW TO CONTROL BINANCEOPTIONSDELETELISTENKEY

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 BinanceOptionsDeleteListenKey:

policy.json

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

BinanceOptionsDeleteListenKey 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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FAQ

What does the BinanceOptionsDeleteListenKey tool do? +

Close/delete an options 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 BinanceOptionsDeleteListenKey? +

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

BinanceOptionsDeleteListenKey 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 BinanceOptionsDeleteListenKey? +

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

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

BinanceOptionsDeleteListenKey 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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// WHAT BINANCEOPTIONSDELETELISTENKEY ON BNB CHAIN MCP DOES

// THE RISK

// HOW TO CONTROL BINANCEOPTIONSDELETELISTENKEY

// EXPLORE