BinanceSubAccountApiPermission

THE RISK

Low Risk

Why BinanceSubAccountApiPermission needs a policy

This tool merely fetches and displays permission information for a Binance sub-account API key. It performs no mutations, does not execute transactions, and does not move funds. The information retrieved could be sensitive (revealing what operations are permitted), but the tool itself is a simple read operation with low blast radius if misused—it cannot cause irreversible changes or financial loss on its own.

From the tool's definition Tool name 'BinanceSubAccountApiPermission' and description 'Get API key permissions for a sub-account. Shows what operations the API key is allowed to perform' indicate a read-only query operation that retrieves metadata about existing API key permissions…

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

POLICY

How to control BinanceSubAccountApiPermission

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 BinanceSubAccountApiPermission:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "BinanceSubAccountApiPermission": {}
  }
}

BinanceSubAccountApiPermission is read-only, so it stays allowed — but 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.

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EXPLORE

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The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
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FAQ

Questions about BinanceSubAccountApiPermission

What does the BinanceSubAccountApiPermission tool do? +

Get API key permissions for a sub-account. Shows what operations the API key is allowed to perform. It is categorised as a Read tool in the Sperax Ecosystem Crypto & DeFI MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on BinanceSubAccountApiPermission? +

Register the Sperax Ecosystem Crypto & DeFI MCP Server MCP server in PolicyLayer and add a rule for BinanceSubAccountApiPermission: 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 BinanceSubAccountApiPermission? +

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

Can I rate-limit BinanceSubAccountApiPermission? +

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

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

BinanceSubAccountApiPermission 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.

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