AI agents call stock_hold_num_cninfo to retrieve information from China Stock MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries publicly available financial information about shareholder composition and stock concentration—standard market data that exchanges publish openly. It performs no modifications, deletions, executions, or financial transactions. The blast radius of misuse is minimal; an agent could at worst retrieve and misrepresent shareholder data, but cannot alter records or move funds.
From the tool's definition Tool retrieves shareholder count and shareholding concentration data from CNINFO (China Securities Regulatory Commission public database).
Documented attack patterns abuse exactly the kind of access stock_hold_num_cninfo gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and China Stock MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for stock_hold_num_cninfo:
{
"version": "1",
"default": "deny",
"tools": {
"stock_hold_num_cninfo": {}
}
}stock_hold_num_cninfo is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get 巨潮资讯-数据中心-专题统计-股东股本-股东人数及持股集中度. It is categorised as a Read tool in the China Stock MCP Server MCP Server, which means it retrieves data without modifying state.
Register the China Stock MCP Server MCP server in PolicyLayer and add a rule for stock_hold_num_cninfo: 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 China Stock MCP Server. Nothing to install.
stock_hold_num_cninfo 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 stock_hold_num_cninfo 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 stock_hold_num_cninfo. 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.
stock_hold_num_cninfo is provided by the China Stock MCP Server MCP server (peikuo/china-stock-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from China Stock MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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351 China Stock MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.