AI agents call get_stats to retrieve information from Personal Knowledge MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool merely retrieves aggregate statistical information about the knowledge base without creating, modifying, deleting, executing, or moving any data. Statistics queries are purely informational reads with minimal blast radius—they cannot damage data, trigger external operations, or cause financial impact.
From the tool's definition Tool name is 'get_stats' and description indicates it retrieves knowledge base statistics (document counts from various sources). The verb '获取' (get/retrieve) and the nature of statistics gathering are read-only operations with no modification or side effects.
Documented attack patterns abuse exactly the kind of access get_stats gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Personal Knowledge MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for get_stats:
{
"version": "1",
"default": "deny",
"tools": {
"get_stats": {}
}
}get_stats is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
Free to start. No card required.
获取知识库统计信息（各来源的文档数量）. It is categorised as a Read tool in the Personal Knowledge MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Personal Knowledge MCP Server MCP server in PolicyLayer and add a rule for get_stats: 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 Personal Knowledge MCP Server. Nothing to install.
get_stats 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_stats 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_stats. 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_stats is provided by the Personal Knowledge MCP Server MCP server (kyodule/personal-knowledge-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Personal Knowledge MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
29 Personal Knowledge MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.