update_cart_item · Stevia Store MCP Server MCP

WHAT IT DOES

What update_cart_item does on Stevia Store MCP Server

AI agents use update_cart_item to create or update resources in Stevia Store MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Stevia Store MCP Server environment.

WHY IT NEEDS A POLICY

Why update_cart_item needs a policy

This tool modifies e-commerce cart data (quantities of items), which is a Write operation. It's reversible—quantities can be adjusted again or items removed. Severity is medium because misuse could affect customer orders and inventory accuracy, but no financial transactions or destructive operations occur at this step; checkout is a separate tool. Confidence is high based on clear semantic evidence.

From the tool's definition Tool description indicates 'עדכון כמות מוצר בעגלה' (Update product quantity in cart), which modifies cart contents; name 'update_cart_item' explicitly performs a reversible update operation

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

update_cart_item Rate-limited

update_cart_item stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "update_cart_item": {
      "limits": [
        {
          "counter": "update_cart_item_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Stevia Store MCP Server, so you can run agents against it safely.

FAQ

Questions about update_cart_item

What does the update_cart_item tool do? +

✏️ עדכון כמות מוצר בעגלה. It is categorised as a Write tool in the Stevia Store MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on update_cart_item? +

Register the Stevia Store MCP Server MCP server in PolicyLayer and add a rule for update_cart_item: 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 Stevia Store MCP Server. Nothing to install.

What risk level is update_cart_item? +

update_cart_item is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit update_cart_item? +

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

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

update_cart_item is provided by the Stevia Store MCP Server MCP server (yairbarak22/mcpserverstevia). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.