AI agents call get_history_deal_list 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.
This tool queries and retrieves historical transaction data without creating, modifying, deleting, or executing any operations. While the server context involves financial markets, this specific tool performs passive data retrieval only. The severity is low because retrieving historical deal information poses minimal risk—the data is already recorded and the action causes no side effects or state changes.
From the tool's definition Tool name 'get_history_deal_list' and description 'Get historical deal list' indicate data retrieval with no side effects. The verb 'get' and absence of modification language confirm read-only semantics.
Documented attack patterns abuse exactly the kind of access get_history_deal_list 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_history_deal_list:
{
"version": "1",
"default": "deny",
"tools": {
"get_history_deal_list": {}
}
}get_history_deal_list is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get historical deal list. 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_history_deal_list: 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_history_deal_list 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_history_deal_list 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_history_deal_list. 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_history_deal_list 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.