AI agents call get_hot_sectors to retrieve information from A Share without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves real-time Chinese stock market sector information. No side effects, modifications, code execution, or data deletion occur. The 'get_' prefix and sibling tools all performing read-only financial data queries indicate this is a Read operation with low severity—misuse by an AI agent would only return data, not cause harm.
From the tool's definition Tool name 'get_hot_sectors' indicates data retrieval. Server description states it provides 'A股实时行情、历史K线、财务报表、技术指标等全方位数据查询' (comprehensive data queries), and all sibling tools follow a 'get_*' naming pattern consistent with read operations (get_balance_data,…
Documented attack patterns abuse exactly the kind of access get_hot_sectors gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and A Share, and nothing reaches the server without passing your rules. This is the rule we recommend for get_hot_sectors:
{
"version": "1",
"default": "deny",
"tools": {
"get_hot_sectors": {}
}
}get_hot_sectors is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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get_hot_sectors. It is categorised as a Read tool in the A Share MCP Server, which means it retrieves data without modifying state.
Register the A Share MCP server in PolicyLayer and add a rule for get_hot_sectors: 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 A Share. Nothing to install.
get_hot_sectors 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_hot_sectors 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_hot_sectors. 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_hot_sectors is provided by the A Share MCP server (shouldnotappearcalm/a-share-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from A Share, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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55 A Share tools catalogued and risk-classified — across an index of 43,000+ MCP servers.