check_login

THE RISK

Low Risk

Why check_login needs a policy

This tool performs a status check by examining the current login state. It is a read-only operation with no side effects—it neither modifies data, executes commands, deletes information, nor commits financial transactions. The blast radius if misused is minimal; an AI agent determining login status poses negligible security risk. Confidence is high because the name and description are explicit and unambiguous.

From the tool's definition Tool name 'check_login' and description 'Check if logged into Amazon' indicate a query operation that retrieves authentication status without modifying data or triggering external actions.

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

POLICY

How to control check_login

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

policy.json

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

check_login 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 Amazon Cart 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 Amazon Cart MCP Server tools

Write add_to_cart Add a product to Amazon cart Write add_to_wholefoods_cart Add a grocery product to the Whole Foods / Amazon Fresh cart. Use this instead of add_to_c Write save_session (Optional) Manually trigger session save. Sessions are automatically saved periodically, a Read search_amazon Search for products on Amazon Read search_wholefoods Search for grocery products on Whole Foods Market via Amazon. Results are scoped to items Read view_cart View current Amazon cart contents Read view_wholefoods_cart View the current Whole Foods / Amazon Fresh grocery cart contents and subtotal.

All 8 Amazon Cart 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 check_login

What does the check_login tool do? +

Check if logged into Amazon. It is categorised as a Read tool in the Amazon Cart MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on check_login? +

Register the Amazon Cart MCP Server MCP server in PolicyLayer and add a rule for check_login: 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 Amazon Cart MCP Server. Nothing to install.

What risk level is check_login? +

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

Can I rate-limit check_login? +

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

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

check_login is provided by the Amazon Cart MCP Server MCP server (madebydia/amazon-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Amazon Cart MCP Server tool call.

Start from Amazon Cart 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 →