AI agents call qlib_list_instruments to retrieve information from Qlib 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 financial instruments (stocks) from a market or index. It performs a query-only operation that returns information without creating, modifying, deleting, or executing any actions. The description uses '获取' (retrieve/get), which is a read-only operation. No side effects or irreversible changes are possible.
From the tool's definition Tool name 'qlib_list_instruments' and description '获取指定市场/指数的成分股列表' (retrieve constituent stock list for specified market/index) indicate data retrieval with no modification or execution capability.
Attacks that exploit this kind of access
获取指定市场/指数的成分股列表。. It is categorised as a Read tool in the Qlib MCP Server, which means it retrieves data without modifying state.
Register the Qlib MCP server in PolicyLayer and add a rule for qlib_list_instruments: 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 Qlib. Nothing to install.
qlib_list_instruments 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 qlib_list_instruments 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 qlib_list_instruments. 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.
qlib_list_instruments is provided by the Qlib MCP server (lsj210001/qlib-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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