Find files larger than a specified size (in MB)
AI agents call find_large_files to retrieve information from System Information MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool only queries and retrieves information about files matching size criteria. It has no side effects, does not modify data, execute code, delete content, or commit financial obligations. The operation is purely informational, making it a Read classification with low severity.
From the tool's definition Tool description states it 'Find files larger than a specified size' - a query operation that retrieves information without modification. The server description emphasizes 'search' as a Read category example, and this tool performs file system searching.
Attacks that exploit this kind of access
Find files larger than a specified size (in MB). It is categorised as a Read tool in the System Information MCP Server MCP Server, which means it retrieves data without modifying state.
Register the System Information MCP Server MCP server in PolicyLayer and add a rule for find_large_files: 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 System Information MCP Server. Nothing to install.
find_large_files 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 find_large_files 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 find_large_files. 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.
find_large_files is provided by the System Information MCP Server MCP server (markolive1501/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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