List the largest files, folders, or all rows from a WizTree CSV snapshot.
AI agents call top_entries to retrieve information from WizTree MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and displays information from existing CSV data without creating, modifying, or deleting any data. It is a straightforward read operation that queries a snapshot of disk usage information. No side effects or external operations are triggered. Misuse would only expose filesystem metadata that is already locally accessible, posing minimal security risk.
From the tool's definition Tool description states it 'List[s] the largest files, folders, or all rows from a WizTree CSV snapshot' and the server is explicitly described as 'Read-only MCP server'.
Attacks that exploit this kind of access
List the largest files, folders, or all rows from a WizTree CSV snapshot. It is categorised as a Read tool in the WizTree MCP MCP Server, which means it retrieves data without modifying state.
Register the WizTree MCP server in PolicyLayer and add a rule for top_entries: 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 WizTree MCP. Nothing to install.
top_entries 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 top_entries 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 top_entries. 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.
top_entries is provided by the WizTree MCP server (onmokoworks/wiztree-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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