AI agents call get_margin_trading 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 margin trading balance information, which is financial market data that already exists. It performs no modifications, deletions, transfers of funds, or execution of transactions. The function is purely informational, returning historical or current margin trading statistics.
From the tool's definition Tool name 'get_margin_trading' and description '获取融资融券数据（两融余额）' (Get margin trading data / margin financing and securities lending balance) indicate data retrieval only.
Documented attack patterns abuse exactly the kind of access get_margin_trading 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_margin_trading:
{
"version": "1",
"default": "deny",
"tools": {
"get_margin_trading": {}
}
}get_margin_trading 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.
获取融资融券数据（两融余额）。. 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_margin_trading: 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_margin_trading 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_margin_trading 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_margin_trading. 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_margin_trading 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.