add-to-cart · Shopping MCP Server (Amazon + Target) MCP

WHAT IT DOES

What add-to-cart does on Shopping MCP Server (Amazon + Target)

AI agents use add-to-cart to create or update resources in Shopping MCP Server (Amazon + Target) — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Shopping MCP Server (Amazon + Target) environment.

WHY IT NEEDS A POLICY

Why add-to-cart needs a policy

This tool modifies user cart state reversibly by adding items, making it a Write operation. While it doesn't directly move money (Financial) or delete data (Destructive), it sets up for downstream financial consequences via 'perform-purchase'.

From the tool's definition Tool name 'add-to-cart' and description 'Add a product to the Amazon cart' indicate creation/modification of cart state. Sibling tools include 'perform-purchase' which suggests financial operations are possible downstream.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

add-to-cart Rate-limited

add-to-cart 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": {
    "add-to-cart": {
      "limits": [
        {
          "counter": "add-to-cart_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 Shopping MCP Server (Amazon + Target), so you can run agents against it safely.

FAQ

Questions about add-to-cart

What does the add-to-cart tool do? +

Add a product to the Amazon cart using ASIN - You should always ask for confirmation to the user before running this tool. It is categorised as a Write tool in the Shopping MCP Server (Amazon + Target) MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on add-to-cart? +

Register the Shopping MCP Server (Amazon + Target) MCP server in PolicyLayer and add a rule for add-to-cart: 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 Shopping MCP Server (Amazon + Target). Nothing to install.

What risk level is add-to-cart? +

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

Can I rate-limit add-to-cart? +

Yes. Add a rate_limit block to the add-to-cart 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 add-to-cart completely? +

Set action: deny in the PolicyLayer policy for add-to-cart. 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 add-to-cart? +

add-to-cart is provided by the Shopping MCP Server (Amazon + Target) MCP server (sachinparyani/mcp-server-shopping). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.