📜 Trả về sự kiện 'Ngày này năm xưa' (nguồn: lichngaytot.com)
AI agents call ngay_nay_nam_xua to retrieve information from Mcp4xiaozhi 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 event data with no side effects, modifications, or external command execution. It is a simple informational read operation that poses minimal security risk even if misused by an AI agent.
From the tool's definition Tool name 'ngay_nay_nam_xua' (On this day in history) and description indicate it 'returns' historical events from lichngaytot.com.
Attacks that exploit this kind of access
📜 Trả về sự kiện 'Ngày này năm xưa' (nguồn: lichngaytot.com). It is categorised as a Read tool in the Mcp4xiaozhi MCP Server, which means it retrieves data without modifying state.
Register the Mcp4xiaozhi MCP server in PolicyLayer and add a rule for ngay_nay_nam_xua: 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 Mcp4xiaozhi. Nothing to install.
ngay_nay_nam_xua 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 ngay_nay_nam_xua 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 ngay_nay_nam_xua. 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.
ngay_nay_nam_xua is provided by the Mcp4xiaozhi MCP server (vdlaptrinh/mcp4xiaozhi). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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