get_order_book
AI agents call get_order_book to retrieve information from Binance Cryptocurrency MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves cryptocurrency market data (order book snapshot) without side effects. It does not execute trades, modify positions, move funds, or delete data. Despite the empty description, the context (sibling tools and server purpose) strongly indicates this is a data query operation.
From the tool's definition Tool name 'get_order_book' and sibling tools (get_24hr_ticker, get_price, get_klines, get_recent_trades) are all data retrieval functions.
Attacks that exploit this kind of access
get_order_book. It is categorised as a Read tool in the Binance Cryptocurrency MCP MCP Server, which means it retrieves data without modifying state.
Register the Binance Cryptocurrency MCP server in PolicyLayer and add a rule for get_order_book: 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 Cryptocurrency MCP. Nothing to install.
get_order_book 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_order_book 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_order_book. 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_order_book is provided by the Binance Cryptocurrency MCP server (jianchundev/binance-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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