AI agents call get_company_info 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 read-only financial and corporate information (industry classification, market capitalization, share structure) about listed companies. It performs a data query with no side effects, making it a Read category tool. The low severity reflects that misuse would only expose publicly available financial data about companies, with minimal blast radius for an AI agent.
From the tool's definition Tool name 'get_company_info' and description '获取A股公司基本信息，包括行业、市值、股本等' (Get A-stock company basic information, including industry, market cap, share capital, etc.) indicates retrieval of static company profile data with no modification or execution…
Documented attack patterns abuse exactly the kind of access get_company_info 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_company_info:
{
"version": "1",
"default": "deny",
"tools": {
"get_company_info": {}
}
}get_company_info 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A股公司基本信息，包括行业、市值、股本等。. 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_company_info: 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_company_info 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_company_info 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_company_info. 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_company_info 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.