cart_merge_carts · MCP Dynamics 365 Commerce Server MCP

WHAT IT DOES

What cart_merge_carts does on MCP Dynamics 365 Commerce Server

AI agents use cart_merge_carts to create or update resources in MCP Dynamics 365 Commerce Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your MCP Dynamics 365 Commerce Server environment.

WHY IT NEEDS A POLICY

Why cart_merge_carts needs a policy

This tool modifies existing cart data by consolidating multiple carts into one, which is a Write-category action. Severity is medium rather than high because: (1) the operation is reversible (carts can typically be recreated or separated), (2) it affects transactional user data (shopping carts) rather than system-critical data, and (3) misuse by an AI agent could cause inconvenience (wrong carts merged) but not…

From the tool's definition Tool name 'cart_merge_carts' and description 'Merge multiple carts' indicate a data modification operation that combines cart entities. Merging is a reversible write operation that modifies cart state.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

cart_merge_carts Rate-limited

cart_merge_carts 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": {
    "cart_merge_carts": {
      "limits": [
        {
          "counter": "cart_merge_carts_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 MCP Dynamics 365 Commerce Server, so you can run agents against it safely.

FAQ

Questions about cart_merge_carts

What does the cart_merge_carts tool do? +

Merge multiple carts. It is categorised as a Write tool in the MCP Dynamics 365 Commerce 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 cart_merge_carts? +

Register the MCP Dynamics 365 Commerce Server MCP server in PolicyLayer and add a rule for cart_merge_carts: 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 MCP Dynamics 365 Commerce Server. Nothing to install.

What risk level is cart_merge_carts? +

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

Can I rate-limit cart_merge_carts? +

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

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

cart_merge_carts is provided by the MCP Dynamics 365 Commerce Server MCP server (jiantmo/mcp-commerce). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.