调用 doupload.php task=22，按 file_id 获取文件下载信息与下载链接。
AI agents call lanzou_get_file_link to retrieve information from Lanzou MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries the Lanzou Cloud API (doupload.php task=22) to retrieve download metadata and link information for a specified file. It performs a read operation with no side effects—it does not create, modify, delete, or execute arbitrary operations. The data returned (download link, file info) are informational outputs.
From the tool's definition Tool description indicates it retrieves 'file download information' and 'download link' based on file_id. The verb pattern is retrieval-focused: "获取" (get/retrieve) rather than modification or deletion.
Attacks that exploit this kind of access
调用 doupload.php task=22，按 file_id 获取文件下载信息与下载链接。. It is categorised as a Read tool in the Lanzou MCP MCP Server, which means it retrieves data without modifying state.
Register the Lanzou MCP server in PolicyLayer and add a rule for lanzou_get_file_link: 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 Lanzou MCP. Nothing to install.
lanzou_get_file_link 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 lanzou_get_file_link 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 lanzou_get_file_link. 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.
lanzou_get_file_link is provided by the Lanzou MCP server (k0itoyuu/lanzou-mcp). 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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