AI agents call fund_nav_history to retrieve information from Xueqiu MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries historical financial data about mutual funds (净值 = net asset value). It performs a read-only lookup operation with no side effects, no code execution, no data modification, and no financial transactions. It is informational retrieval only, making it a Read category tool with low severity risk.
From the tool's definition Tool name 'fund_nav_history' and description '获取基金历史净值数据' (retrieve fund historical net asset value data) indicates data retrieval with the verb '获取' (get/fetch).
Documented attack patterns abuse exactly the kind of access fund_nav_history gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Xueqiu MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for fund_nav_history:
{
"version": "1",
"default": "deny",
"tools": {
"fund_nav_history": {}
}
}fund_nav_history is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
Free to start. No card required.
获取基金历史净值数据 Args: fund_code: 基金代码. It is categorised as a Read tool in the Xueqiu MCP MCP Server, which means it retrieves data without modifying state.
Register the Xueqiu MCP server in PolicyLayer and add a rule for fund_nav_history: 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 Xueqiu MCP. Nothing to install.
fund_nav_history 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 fund_nav_history 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 fund_nav_history. 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.
fund_nav_history is provided by the Xueqiu MCP server (liqiongyu/xueqiu_mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Xueqiu MCP, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
45 Xueqiu MCP tools catalogued and risk-classified — across an index of 43,000+ MCP servers.