AI agents call calculate_risk_metrics to retrieve information from A Share without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs financial calculations and analysis on stock data to derive metrics. While it computes values, it does not create, modify, delete data, execute arbitrary code, or commit financial transactions. It is a read-like operation that retrieves and processes data to generate analytical insights.
From the tool's definition Tool name 'calculate_risk_metrics' and description indicating calculation of risk metrics (beta, Sharpe ratio, maximum drawdown, volatility, downside risk) with benchmark comparison.
Attacks that exploit this kind of access
计算风险指标，包括贝塔值、夏普比率、最大回撤、波动率、下行风险等，与基准指数比较。. It is categorised as a Read tool in the A Share MCP Server, which means it retrieves data without modifying state.
Register the A Share MCP server in PolicyLayer and add a rule for calculate_risk_metrics: 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 A Share. Nothing to install.
calculate_risk_metrics 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 calculate_risk_metrics 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 calculate_risk_metrics. 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.
calculate_risk_metrics is provided by the A Share MCP server (kissjerryfan/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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