AI agents call get_hs300_stocks to retrieve information from Stockreport without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves stock list or index constituent data from the HS300 index (Hang Seng 300), which is a standard read/query operation. There is no indication of data modification, deletion, code execution, or financial transactions. The blast radius if misused by an AI agent would be limited to retrieving potentially public market data.
From the tool's definition Tool name 'get_hs300_stocks' indicates data retrieval of Hang Seng 300 index constituent stocks. No description provided, but naming pattern matches sibling tools (get_all_stock, get_historical_k_data, get_dividend_data) which are all read operations that…
Documented attack patterns abuse exactly the kind of access get_hs300_stocks gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Stockreport, and nothing reaches the server without passing your rules. This is the rule we recommend for get_hs300_stocks:
{
"version": "1",
"default": "deny",
"tools": {
"get_hs300_stocks": {}
}
}get_hs300_stocks is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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get_hs300_stocks. It is categorised as a Read tool in the Stockreport MCP Server, which means it retrieves data without modifying state.
Register the Stockreport 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 Stockreport. 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 Stockreport MCP server (jamesdingai/stockreport-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Stockreport, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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34 Stockreport tools catalogued and risk-classified — across an index of 43,000+ MCP servers.