get_file_summary

THE RISK

Low Risk

Why get_file_summary needs a policy

This tool performs pure data retrieval with no side effects. It generates aggregate statistics from file content without any capability to modify, delete, or execute code. The blast radius of misuse is minimal — an attacker could learn file dimensions but cannot alter or act upon data.

From the tool's definition Tool retrieves statistical metadata about a file ('line stats, character stats, and word count') without modifying, deleting, or executing anything. The description explicitly states it 'Get[s] comprehensive statistical summary' — a read-only operation.

Documented attack patterns abuse exactly the kind of access get_file_summary gives an agent:

POLICY

How to control get_file_summary

PolicyLayer is an MCP gateway — it sits between your AI agents and Large File MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for get_file_summary:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "get_file_summary": {}
  }
}

get_file_summary is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register Large File MCP Server — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More Large File MCP Server tools

Read navigate_to_line Jump to a specific line in a large file with surrounding context lines. Highlights the tar Read get_file_structure Analyze file structure and get comprehensive metadata including line statistics, recommend Read read_large_file_chunk Read a specific chunk of a large file with intelligent chunking based on file type. Automa Read search_in_large_file Search for a pattern in a large file with context lines. Supports regex and case-sensitive Read stream_large_file Stream a large file in chunks. Returns multiple chunks for processing very large files eff

All 6 Large File MCP Server tools →

Read tools on other servers

M-Team MCP Server get_torrent_detail YouTube MCP Server search_channel Android Forensics ADB MCP Server parse_browser_history 0xarchive web3_challenge

Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about get_file_summary

What does the get_file_summary tool do? +

Get comprehensive statistical summary of a file including line stats, character stats, and word count. It is categorised as a Read tool in the Large File MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on get_file_summary? +

Register the Large File MCP Server MCP server in PolicyLayer and add a rule for get_file_summary: 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 Large File MCP Server. Nothing to install.

What risk level is get_file_summary? +

get_file_summary is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit get_file_summary? +

Yes. Add a rate_limit block to the get_file_summary 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.

How do I block get_file_summary completely? +

Set action: deny in the PolicyLayer policy for get_file_summary. 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.

What MCP server provides get_file_summary? +

get_file_summary is provided by the Large File MCP Server MCP server (willianpinho/large-file-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Large File MCP Server tool call.

Start from Large File MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →