discount_create · Voog MCP: Risk & Policy

WHAT IT DOES

What discount_create does on Voog

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

WHY IT NEEDS A POLICY

Why discount_create needs a policy

This tool creates a new discount record in the ecommerce system. While it modifies state, it is reversible (discounts can be updated or deleted), so it is Write rather than Destructive. The severity is medium because creating unauthorized discounts could affect pricing, revenue, or customer experience, but the blast radius is limited to discount management and does not directly move money or delete data.

From the tool's definition Tool name 'discount_create' and description 'Create a discount (POST /admin/api/ecommerce/v1/discounts)' explicitly indicate creation of new data via POST request.

Risk signalsAdmin/system-level operation

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

discount_create Rate-limited

discount_create 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": {
    "discount_create": {
      "limits": [
        {
          "counter": "discount_create_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 Voog, so you can run agents against it safely.

FAQ

Questions about discount_create

What does the discount_create tool do? +

Create a discount (POST /admin/api/ecommerce/v1/discounts). It is categorised as a Write tool in the Voog MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on discount_create? +

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

What risk level is discount_create? +

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

Can I rate-limit discount_create? +

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

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

discount_create is provided by the Voog MCP server (runnel/voog-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.