AI agents call get_drive_file_content 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 file content from Feishu Drive without creating, modifying, deleting, or executing anything. It is a straightforward read operation that queries data with no side effects, consistent with the Read category.
From the tool's definition Tool name 'get_drive_file_content' and description '获取飞书云盘中指定文件的内容' (retrieve content of specified file in Feishu Drive) indicate retrieval/query operation with no modification or deletion.
Documented attack patterns abuse exactly the kind of access get_drive_file_content 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_drive_file_content:
{
"version": "1",
"default": "deny",
"tools": {
"get_drive_file_content": {}
}
}get_drive_file_content is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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获取飞书云盘中指定文件的内容. 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_drive_file_content: 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_drive_file_content 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_drive_file_content 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_drive_file_content. 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_drive_file_content 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.