tiendanube_apply_cart_coupon · Tienda Nube MCP Server MCP

WHAT IT DOES

What tiendanube_apply_cart_coupon does on Tienda Nube MCP Server

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

WHY IT NEEDS A POLICY

Why tiendanube_apply_cart_coupon needs a policy

Applying a coupon to a cart creates or modifies cart data (adds a discount modifier) but is reversible — the coupon can be removed or the cart cleared. This is characteristic of Write operations. While it could affect pricing/financial display, it does not commit a transaction or move money, so it does not qualify as Financial.

From the tool's definition Tool name 'tiendanube_apply_cart_coupon' and description 'Apply a discount coupon code to the cart' indicates the tool modifies cart state by adding/applying a coupon, which is a reversible data modification.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

tiendanube_apply_cart_coupon Rate-limited

tiendanube_apply_cart_coupon 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": {
    "tiendanube_apply_cart_coupon": {
      "limits": [
        {
          "counter": "tiendanube_apply_cart_coupon_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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

FAQ

Questions about tiendanube_apply_cart_coupon

What does the tiendanube_apply_cart_coupon tool do? +

APPLY CART COUPON - Apply a discount coupon code to the cart. It is categorised as a Write tool in the Tienda Nube 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 tiendanube_apply_cart_coupon? +

Register the Tienda Nube MCP Server MCP server in PolicyLayer and add a rule for tiendanube_apply_cart_coupon: 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 Tienda Nube MCP Server. Nothing to install.

What risk level is tiendanube_apply_cart_coupon? +

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

Can I rate-limit tiendanube_apply_cart_coupon? +

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

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

tiendanube_apply_cart_coupon is provided by the Tienda Nube MCP Server MCP server (pedrohsguimaraes/nuvem-shop-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.