AI agents call stock_hk_hot_rank_em 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 retrieves and queries public market popularity ranking data with no side effects, no data modification, no code execution, and no financial transactions. It is a pure Read operation that simply returns informational statistics about stock market sentiment/rankings.
From the tool's definition Tool name 'stock_hk_hot_rank_em' and description 'Get 东方财富-个股人气榜-人气榜-港股市场' (East Finance - Individual Stock Popularity Ranking - Hong Kong Stock Market) indicate a data retrieval operation that fetches ranking/popularity data from Hong Kong stock market.
Documented attack patterns abuse exactly the kind of access stock_hk_hot_rank_em 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_hk_hot_rank_em:
{
"version": "1",
"default": "deny",
"tools": {
"stock_hk_hot_rank_em": {}
}
}stock_hk_hot_rank_em is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get 东方财富-个股人气榜-人气榜-港股市场. 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_hk_hot_rank_em: 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_hk_hot_rank_em 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_hk_hot_rank_em 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_hk_hot_rank_em. 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_hk_hot_rank_em 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.