Get the order book for a symbol.
AI agents call depth to retrieve information from Aster Finance MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The depth tool queries and retrieves the order book (market data) for a cryptocurrency trading pair. This is a standard read operation that has no impact on accounts, balances, positions, or orders. While it is exposed on a financial trading platform (Aster Finance), the tool itself performs only information retrieval with zero financial or operational impact.
From the tool's definition Tool name 'depth' and description 'Get the order book for a symbol' — retrieves market data with no side effects. Order book queries are non-destructive read operations.
Attacks that exploit this kind of access
Get the order book for a symbol. It is categorised as a Read tool in the Aster Finance MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Aster Finance MCP Server MCP server in PolicyLayer and add a rule for depth: 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 Aster Finance MCP Server. Nothing to install.
depth 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 depth 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 depth. 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.
depth is provided by the Aster Finance MCP Server MCP server (questflowai/aster-mcp-server). 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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