AI agents call get_acc_cash_flow 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 retrieves account cash-flow data without creating, modifying, or deleting anything, placing it in the Read category. Severity is elevated to 'medium' rather than 'low' because unauthorized access to detailed cash-flow information from live trading accounts could expose transaction history, account balances, and financial patterns, creating risk even without side effects.
From the tool's definition Tool name 'get_acc_cash_flow' and description 'Get account cash-flow details' indicate data retrieval without modification.
Documented attack patterns abuse exactly the kind of access get_acc_cash_flow 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_acc_cash_flow:
{
"version": "1",
"default": "deny",
"tools": {
"get_acc_cash_flow": {}
}
}get_acc_cash_flow is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get account cash-flow details. 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_acc_cash_flow: 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_acc_cash_flow 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_acc_cash_flow 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_acc_cash_flow. 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_acc_cash_flow 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.