🌳 树状搜索结果：以目录树形式展示匹配的文件（替代扁平列表）。
AI agents call search_files_tree to retrieve information from Android 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 and presents file system information in a hierarchical tree structure. It is a read-only operation that queries the file system without creating, modifying, deleting, or executing anything. The worst-case misuse (e.g., discovering sensitive file paths) has limited blast radius on a single Android device. Severity is low because the operation is non-destructive and non-executive.
From the tool's definition Tool name 'search_files_tree' and description indicating it 'displays matching files in directory tree form' — a search/display operation with no modification, deletion, or execution capability.
Attacks that exploit this kind of access
🌳 树状搜索结果：以目录树形式展示匹配的文件（替代扁平列表）。. It is categorised as a Read tool in the Android MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Android MCP Server MCP server in PolicyLayer and add a rule for search_files_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 Android MCP Server. Nothing to install.
search_files_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 search_files_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 search_files_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.
search_files_tree is provided by the Android MCP Server MCP server (wujie272/android-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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