Get industry classification for a specific stock or all stocks on a date.
AI agents call get_stock_industry 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 static reference data (industry classifications) for stocks on a specific date. It has no side effects, makes no modifications to data, executes no code, and creates no financial obligations. It is purely a data query operation, consistent with the Read category.
From the tool's definition Tool name is 'get_stock_industry' and description states 'Get industry classification for a specific stock or all stocks on a date.' The verb 'Get' and the absence of any language indicating modification, deletion, or execution (such as 'update', 'delete',…
Documented attack patterns abuse exactly the kind of access get_stock_industry 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_stock_industry:
{
"version": "1",
"default": "deny",
"tools": {
"get_stock_industry": {}
}
}get_stock_industry is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get industry classification for a specific stock or all stocks on a date. 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_stock_industry: 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_stock_industry 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_stock_industry 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_stock_industry. 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_stock_industry 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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