login_help

THE RISK

Low Risk

Why login_help needs a policy

This tool retrieves static help and troubleshooting information about the login process. It has no side effects, does not modify data, and only provides read-only guidance content to the user. Minimal blast radius if misused, as it only surfaces informational text.

From the tool's definition 'Get help and troubleshooting tips for N Lobby login' - purely informational retrieval of help/guidance content

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

POLICY

How to control login_help

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

policy.json

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

login_help 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 N Lobby 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 N Lobby MCP Server tools

Execute finish_exam_day_mode Finish exam day mode Execute test_trpc_endpoint Test specific tRPC endpoint with detailed response Execute interactive_login Open browser for manual login to N Lobby (no credentials required) Write mark_news_as_read Mark news articles as read Write set_cookies Set authentication cookies for N Lobby access Write update_last_access Update the last access timestamp for the current user Read check_cookies Check if authentication cookies are set Read check_exam_day Check if the specified date (or today if omitted) is an exam day

All 28 N Lobby 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 login_help

What does the login_help tool do? +

Get help and troubleshooting tips for N Lobby login. It is categorised as a Read tool in the N Lobby MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on login_help? +

Register the N Lobby MCP Server MCP server in PolicyLayer and add a rule for login_help: 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 N Lobby MCP Server. Nothing to install.

What risk level is login_help? +

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

Can I rate-limit login_help? +

Yes. Add a rate_limit block to the login_help 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 login_help completely? +

Set action: deny in the PolicyLayer policy for login_help. 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 login_help? +

login_help is provided by the N Lobby MCP Server MCP server (minagishl/nlobby-cli). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every N Lobby MCP Server tool call.

Start from N Lobby 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 →