AI agents call get_hs300_stocks to retrieve information from Ashare without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves publicly available market index composition data. It performs a simple lookup/query operation with no side effects, no code execution, no data modification, and no financial impact. The worst outcome of misuse would be gathering market intelligence, which poses minimal harm. Classified as Read with low severity.
From the tool's definition Tool name 'get_hs300_stocks' and description 'CSI 300 constituents on date (default latest)' indicate a query operation that retrieves financial index constituent data without modifying, executing code, or making financial transactions.
Attacks that exploit this kind of access
CSI 300 (沪深300) constituents on date (default latest). It is categorised as a Read tool in the Ashare MCP Server, which means it retrieves data without modifying state.
Register the Ashare MCP server in PolicyLayer and add a rule for get_hs300_stocks: 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 Ashare. Nothing to install.
get_hs300_stocks 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_hs300_stocks 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_hs300_stocks. 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_hs300_stocks is provided by the Ashare MCP server (maimai-hqw/ashare-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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