AI agents call get_rt_data to retrieve information from Futu Stock MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool appears to query real-time market data based on its name and the server's stated function to 'query real-time market data.' This is a Read operation—it retrieves information without creating, modifying, executing, or deleting data. Confidence is moderate (0.7) because the description is empty and we rely on inference from the tool name and server context.
From the tool's definition Tool name 'get_rt_data' indicates retrieval of real-time data. The server context shows it queries market data across Hong Kong, US, and A-share markets.
Documented attack patterns abuse exactly the kind of access get_rt_data gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Futu Stock MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for get_rt_data:
{
"version": "1",
"default": "deny",
"tools": {
"get_rt_data": {}
}
}get_rt_data is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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get_rt_data. It is categorised as a Read tool in the Futu Stock MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Futu Stock MCP Server MCP server in PolicyLayer and add a rule for get_rt_data: 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 Futu Stock MCP Server. Nothing to install.
get_rt_data 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_rt_data 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_rt_data. 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_rt_data is provided by the Futu Stock MCP Server MCP server (shuizhengqi1/futu-stock-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 44 Futu Stock MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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44 Futu Stock MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.