抓取轻量级的节点树（只包含分类与页面名称），每个节点包含跳转链接。
AI agents call fetch_showdoc_node_tree to retrieve information from ShowDoc MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool retrieves and queries ShowDoc's hierarchical node structure to obtain metadata (categories, page names, and links). This is a read-only operation with no side effects—it neither modifies data, executes code, nor performs irreversible actions. Misuse by an AI agent would only retrieve unintended documentation structure data, posing minimal risk.
From the tool's definition Tool description indicates it 'fetches' (抓取) a 'lightweight node tree containing only category and page names' with navigation links. No creation, modification, deletion, or code execution occurs. Pure data retrieval operation.
Attacks that exploit this kind of access
抓取轻量级的节点树（只包含分类与页面名称），每个节点包含跳转链接。. It is categorised as a Read tool in the ShowDoc MCP Server MCP Server, which means it retrieves data without modifying state.
Register the ShowDoc MCP Server MCP server in PolicyLayer and add a rule for fetch_showdoc_node_tree: 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 ShowDoc MCP Server. Nothing to install.
fetch_showdoc_node_tree 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 fetch_showdoc_node_tree 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 fetch_showdoc_node_tree. 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.
fetch_showdoc_node_tree is provided by the ShowDoc MCP Server MCP server (yfcyfc123234/showdoc_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.
Teams ship this data inside their own products. See what a licence covers →