AI agents call get_broker_queue 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 'get_' prefix and queue-retrieval semantics indicate this retrieves data without side effects. However, in a financial trading context, queue data could potentially inform timing of financial operations, so severity is elevated to medium rather than low despite being a Read operation. Confidence is reduced to 0.7 due to lack of description.
From the tool's definition Tool name 'get_broker_queue' suggests retrieving queue status or information with no modification; server context includes query tools like 'get_acc_cash_flow', 'get_asset_list', and 'get_cur_kline' which are all Read operations.
Documented attack patterns abuse exactly the kind of access get_broker_queue 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_broker_queue:
{
"version": "1",
"default": "deny",
"tools": {
"get_broker_queue": {}
}
}get_broker_queue is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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get_broker_queue. 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_broker_queue: 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_broker_queue 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_broker_queue 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_broker_queue. 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_broker_queue 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.