AI agents call get_industry_stocks to retrieve information from Cn Financial without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and lists stock constituents for a given industry sector. It performs a query operation that returns financial data without creating, modifying, deleting, or executing any actions. The severity is low because unauthorized access to public financial market data carries minimal direct risk, though context-dependent uses could warrant medium severity if the AI agent were building trading strategies.
From the tool's definition Tool name 'get_industry_stocks' and description '获取指定行业板块的成分股列表' (Get constituent stock list for specified industry sector) indicate data retrieval with no modification capability. The verb '获取' (get/retrieve) confirms a read-only operation.
Documented attack patterns abuse exactly the kind of access get_industry_stocks gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Cn Financial, and nothing reaches the server without passing your rules. This is the rule we recommend for get_industry_stocks:
{
"version": "1",
"default": "deny",
"tools": {
"get_industry_stocks": {}
}
}get_industry_stocks is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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获取指定行业板块的成分股列表。. It is categorised as a Read tool in the Cn Financial MCP Server, which means it retrieves data without modifying state.
Register the Cn Financial MCP server in PolicyLayer and add a rule for get_industry_stocks: 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 Cn Financial. Nothing to install.
get_industry_stocks 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 get_industry_stocks 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 get_industry_stocks. 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.
get_industry_stocks is provided by the Cn Financial MCP server (ccq1/cn-financial-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Cn Financial, 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.
42 Cn Financial tools catalogued and risk-classified — across an index of 43,000+ MCP servers.