mcp__willys_add_to_cart · Willys MCP Server MCP

WHAT IT DOES

What mcp__willys_add_to_cart does on Willys MCP Server

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

WHY IT NEEDS A POLICY

Why mcp__willys_add_to_cart needs a policy

This tool creates or modifies shopping cart data by adding products. It is a Write operation because it changes user-controlled state reversibly. Severity is medium because misuse could cause unwanted purchases or billing issues, but the action is limited to cart manipulation (not actual payment/checkout) and can be undone by removing items.

From the tool's definition Tool name 'add_to_cart' and description 'Add a product to the Willys cart' indicate a create/modify operation that changes cart state. This is reversible (items can be removed before checkout).

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

mcp__willys_add_to_cart Rate-limited

mcp__willys_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": {
    "mcp__willys_add_to_cart": {
      "limits": [
        {
          "counter": "mcp__willys_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 Willys MCP Server, so you can run agents against it safely.

FAQ

Questions about mcp__willys_add_to_cart

What does the mcp__willys_add_to_cart tool do? +

Add a product to the Willys cart by product code using session-based authentication. It is categorised as a Write tool in the Willys 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 mcp__willys_add_to_cart? +

Register the Willys MCP Server MCP server in PolicyLayer and add a rule for mcp__willys_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 Willys MCP Server. Nothing to install.

What risk level is mcp__willys_add_to_cart? +

mcp__willys_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 mcp__willys_add_to_cart? +

Yes. Add a rate_limit block to the mcp__willys_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 mcp__willys_add_to_cart completely? +

Set action: deny in the PolicyLayer policy for mcp__willys_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 mcp__willys_add_to_cart? +

mcp__willys_add_to_cart is provided by the Willys MCP Server MCP server (jimmystridh/willys-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.