AI agents call get_document 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 retrieves or queries document content with no side effects. It matches the Read category definition: retrieves or queries data with no side effects. The low severity reflects minimal blast radius if misused—an agent could access sensitive documents, but the operation is non-destructive and reversible through normal access controls.
From the tool's definition Tool name 'get_document' and description '获取完整的文档内容' (get complete document content) indicate retrieval of document data without modification or deletion.
Documented attack patterns abuse exactly the kind of access get_document 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_document:
{
"version": "1",
"default": "deny",
"tools": {
"get_document": {}
}
}get_document is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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获取完整的文档内容. 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_document: 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_document 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_document 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_document. 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_document 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.
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29 Personal Knowledge MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.