BinancePortfolioMarginCreateListenKey

Create a listen key for Portfolio Margin user data stream. The listen key is used to subscribe to account updates via WebSocket.

SERVERBinance MCP Server SOURCEnirholas/binance-mcp

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/nirholas-binance-mcp/binanceportfoliomargincreatelistenkey.md

WHAT IT DOES

What BinancePortfolioMarginCreateListenKey does on Binance MCP Server

AI agents use BinancePortfolioMarginCreateListenKey to create or update resources in Binance MCP Server, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Binance MCP Server environment.

RISK

Why BinancePortfolioMarginCreateListenKey is rated Medium

This tool creates a new resource (listen key) on the Binance API, making it a Write operation rather than a Read operation. While listen keys are typically used passively to receive account updates, the act of creating one modifies server state by generating a new authentication credential.

From the tool's definition The tool creates a listen key, which involves creating/generating a new resource on the server. The description explicitly states 'Create a listen key', which is a write operation that generates a new authentication token for WebSocket subscriptions.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs BinancePortfolioMarginCreateListenKey safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Binance MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For BinancePortfolioMarginCreateListenKey, this is the rule to start with:

BinancePortfolioMarginCreateListenKey Rate-limited

BinancePortfolioMarginCreateListenKey stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "BinancePortfolioMarginCreateListenKey": {
      "limits": [
        {
          "counter": "binanceportfoliomargincreatelistenkey_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Binance MCP Server, apply this rule, and every BinancePortfolioMarginCreateListenKey call is checked against it from then on.

FAQ

Questions about BinancePortfolioMarginCreateListenKey

What does the BinancePortfolioMarginCreateListenKey tool do? +

Create a listen key for Portfolio Margin user data stream. The listen key is used to subscribe to account updates via WebSocket. It is categorised as a Write tool in the Binance MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on BinancePortfolioMarginCreateListenKey? +

Register the Binance MCP Server MCP server in PolicyLayer and add a rule for BinancePortfolioMarginCreateListenKey: 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 Binance MCP Server. Nothing to install.

What risk level is BinancePortfolioMarginCreateListenKey? +

BinancePortfolioMarginCreateListenKey is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit BinancePortfolioMarginCreateListenKey? +

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

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

BinancePortfolioMarginCreateListenKey is provided by the Binance MCP Server MCP server (nirholas/binance-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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