cart_override_charge · MCP Dynamics 365 Commerce Server MCP

WHAT IT DOES

What cart_override_charge does on MCP Dynamics 365 Commerce Server

AI agents use cart_override_charge 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_override_charge needs a policy

This tool modifies the charge amount on a cart item, which is a write operation that alters pricing data. While it affects financial values, it does not directly move money or commit financial obligations — it modifies a cart record which is reversible. However, misuse could allow an AI agent to set charges to zero or arbitrary values, bypassing intended pricing, making severity high.

From the tool's definition 'Override charge amount' — modifies a financial charge on a cart, but is a reversible write operation (the cart can be updated again)

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

cart_override_charge Rate-limited

cart_override_charge 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_override_charge": {
      "limits": [
        {
          "counter": "cart_override_charge_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_override_charge

What does the cart_override_charge tool do? +

Override charge amount. 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_override_charge? +

Register the MCP Dynamics 365 Commerce Server MCP server in PolicyLayer and add a rule for cart_override_charge: 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_override_charge? +

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

Can I rate-limit cart_override_charge? +

Yes. Add a rate_limit block to the cart_override_charge 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_override_charge completely? +

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

cart_override_charge 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.