create_discount · Creem MCP: Risk & Policy

WHAT IT DOES

What create_discount does on Creem

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

WHY IT NEEDS A POLICY

Why create_discount needs a policy

Creating a discount code is a reversible modification operation. It adds a new record to the system without irreversibly deleting data (Destructive) or moving money directly (Financial), though it may indirectly affect revenue by reducing prices. The operation is Write-class because it creates new data that can later be modified or deleted.

From the tool's definition Tool name is 'create_discount' and description states 'Create a discount code' — this creates new data (a discount code) in the system.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_discount Rate-limited

create_discount 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": {
    "create_discount": {
      "limits": [
        {
          "counter": "create_discount_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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Instant setup, no code required.

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

FAQ

Questions about create_discount

What does the create_discount tool do? +

Create a discount code. It is categorised as a Write tool in the Creem MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on create_discount? +

Register the Creem MCP server in PolicyLayer and add a rule for create_discount: 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 Creem. Nothing to install.

What risk level is create_discount? +

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

Can I rate-limit create_discount? +

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

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

create_discount is provided by the Creem MCP server (selenium39/mcp-server-creem). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.