get_realtime_quote
AI agents call get_realtime_quote 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 queries real-time stock market quote data. As a GET operation that retrieves financial market information without modifying, deleting, or executing operations, it fits the Read category. The severity is low because accessing public market data poses minimal risk even if misused by an AI agent. The empty description lowers confidence slightly, but the function name and server context make the purpose clear.
From the tool's definition Tool name 'get_realtime_quote' indicates data retrieval. Server description emphasizes '实时行情' (realtime quotes) and 'data query' (数据查询) with no write or modification capability.
Documented attack patterns abuse exactly the kind of access get_realtime_quote 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_realtime_quote:
{
"version": "1",
"default": "deny",
"tools": {
"get_realtime_quote": {}
}
}get_realtime_quote is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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get_realtime_quote. 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_realtime_quote: 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_realtime_quote 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_realtime_quote 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_realtime_quote. 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_realtime_quote 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.