AI agents call get_stock_data to retrieve information from CSMAR 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 historical or current stock trading data from the CSMAR database. It performs a passive query operation with no side effects, no code execution, no data modification, and no financial transactions. The blast radius of misuse is minimal—an agent could over-query or access sensitive data, but cannot alter records or trigger trades.
From the tool's definition Tool name 'get_stock_data' and description '获取 CSMAR 股票交易数据' (retrieve CSMAR stock trading data) indicate a data retrieval operation.
Documented attack patterns abuse exactly the kind of access get_stock_data gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and CSMAR MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for get_stock_data:
{
"version": "1",
"default": "deny",
"tools": {
"get_stock_data": {}
}
}get_stock_data 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 CSMAR 股票交易数据. It is categorised as a Read tool in the CSMAR MCP Server MCP Server, which means it retrieves data without modifying state.
Register the CSMAR MCP Server MCP server in PolicyLayer and add a rule for get_stock_data: 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 CSMAR MCP Server. Nothing to install.
get_stock_data 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_stock_data 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_stock_data. 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_stock_data is provided by the CSMAR MCP Server MCP server (ww11-max/csmar-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from CSMAR MCP Server, 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.
11 CSMAR MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.