Get best bid and ask price with quantities from the order book. Real-time spread data.
AI agents call get_book_ticker to retrieve information from AsterDex MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool fetches market data (bid/ask prices and quantities) without modifying state, executing code, or incurring financial risk. It is a passive read operation similar to sibling tools like get_ticker_price and get_orderbook. While the data is used in financial trading contexts, the tool itself only retrieves information and does not execute trades or commit financial obligations.
From the tool's definition Tool retrieves 'best bid and ask price with quantities from the order book' and 'real-time spread data' — pure data queries with no write, execute, or destructive operations.
Attacks that exploit this kind of access
Get best bid and ask price with quantities from the order book. Real-time spread data. It is categorised as a Read tool in the AsterDex MCP Server MCP Server, which means it retrieves data without modifying state.
Register the AsterDex MCP Server MCP server in PolicyLayer and add a rule for get_book_ticker: 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 AsterDex MCP Server. Nothing to install.
get_book_ticker 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_book_ticker 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_book_ticker. 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_book_ticker is provided by the AsterDex MCP Server MCP server (solenyaresearch0000/asterdex-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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