AI agents call get_average_price to retrieve information from Binance MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves cryptocurrency price data from Binance without modifying state or executing external operations. It fits the Read category as a data query operation. Severity is low because market data access poses minimal risk—agents cannot trade, transfer funds, or modify exchange state.
From the tool's definition Tool name 'get_average_price' indicates a query operation. All sibling tools on this server are read-only data retrieval functions (get_*_ticker, get_aggregate_trades, get_exchange_info, get_historical_prices).
Documented attack patterns abuse exactly the kind of access get_average_price gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Binance MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for get_average_price:
{
"version": "1",
"default": "deny",
"tools": {
"get_average_price": {}
}
}get_average_price is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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get_average_price. It is categorised as a Read tool in the Binance MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Binance MCP Server MCP server in PolicyLayer and add a rule for get_average_price: 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.
get_average_price is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the get_average_price 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.
Set action: deny in the PolicyLayer policy for get_average_price. 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.
get_average_price is provided by the Binance MCP Server MCP server (tienan92it/binance-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Binance 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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29 Binance MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.