AI agents call get_stocks_by_sector to retrieve information from Tushare MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a simple lookup/retrieval operation: given a sector code as input, it returns a list of stocks in that sector. There are no side effects, no data modifications, no code execution, and no financial transactions. The blast radius of misuse is minimal—an AI agent querying incorrect sector codes would only retrieve irrelevant data, causing no harm. This is a classic Read operation.
From the tool's definition 根据板块代码获取所属的所有股票 (Get all stocks belonging to a sector based on sector code) — a query operation that retrieves stock information without modifying data.
Documented attack patterns abuse exactly the kind of access get_stocks_by_sector gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Tushare MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for get_stocks_by_sector:
{
"version": "1",
"default": "deny",
"tools": {
"get_stocks_by_sector": {}
}
}get_stocks_by_sector is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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根据板块代码获取所属的所有股票. It is categorised as a Read tool in the Tushare MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Tushare MCP Server MCP server in PolicyLayer and add a rule for get_stocks_by_sector: 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 Tushare MCP Server. Nothing to install.
get_stocks_by_sector 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_stocks_by_sector 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_stocks_by_sector. 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_stocks_by_sector is provided by the Tushare MCP Server MCP server (zhewenzhang/tushare_mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 66 Tushare MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
66 Tushare MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.