BinanceOptionsRenewListenKey

THE RISK

Low Risk

Why BinanceOptionsRenewListenKey needs a policy

This tool simply refreshes/extends a session token (listen key) for a WebSocket data stream. It does not read data, write data, execute code, delete anything, or move money. It is a keep-alive/heartbeat operation that maintains an existing connection, making it closest to 'Other'. While it relates to a financial platform, it commits no financial obligation itself.

From the tool's definition Extend the validity of an options listen key by 60 minutes. Should be called periodically to keep the user data stream active.

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

POLICY

How to control BinanceOptionsRenewListenKey

PolicyLayer is an MCP gateway — it sits between your AI agents and Sperax Ecosystem Crypto & DeFI MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for BinanceOptionsRenewListenKey:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "BinanceOptionsRenewListenKey": {
      "limits": [
        {
          "counter": "binanceoptionsrenewlistenkey_rate",
          "window": "minute",
          "max": 60,
          "scope": "grant"
        }
      ]
    }
  }
}

BinanceOptionsRenewListenKey gets a rate cap, and everything else on the server is denied unless you say otherwise.

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

SET A RULE FOR THIS TOOL →

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EXPLORE

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FAQ

Questions about BinanceOptionsRenewListenKey

What does the BinanceOptionsRenewListenKey tool do? +

Extend the validity of an options listen key by 60 minutes. Should be called periodically to keep the user data stream active. It is categorised as a Other tool in the Sperax Ecosystem Crypto & DeFI MCP Server MCP Server, which means it performs auxiliary operations.

How do I enforce a policy on BinanceOptionsRenewListenKey? +

Register the Sperax Ecosystem Crypto & DeFI MCP Server MCP server in PolicyLayer and add a rule for BinanceOptionsRenewListenKey: 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 Sperax Ecosystem Crypto & DeFI MCP Server. Nothing to install.

What risk level is BinanceOptionsRenewListenKey? +

BinanceOptionsRenewListenKey is a Other tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit BinanceOptionsRenewListenKey? +

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

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

BinanceOptionsRenewListenKey is provided by the Sperax Ecosystem Crypto & DeFI MCP Server MCP server (sperax/sperax-crypto-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Sperax Ecosystem Crypto & DeFI MCP Server tool call.

Start from Sperax Ecosystem Crypto & DeFI MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →