create_coupon

Create a new coupon for discounts

SERVERStripe SOURCE@modelcontextprotocol/server-stripe

Critical RISK CLASS

Category Financial

Parameters 00 required

Recommended Approval-gatedsee the rule below

Registry record Grade D, identity verified Pull the record →

This record as markdown: /tools/stripe/create-coupon.md

WHAT IT DOES

What create_coupon does on Stripe

AI agents use create_coupon to commit financial operations through Stripe, usually the final step of a payment, billing, or trading workflow. A call moves real money.

RISK

Why create_coupon is rated Critical

Creating coupons commits the business to financial obligations—they reduce revenue by offering discounts. An AI agent misusing this tool could create unlimited discount coupons, causing direct financial loss. While not a direct money transfer like create_refund or payments, coupon creation represents a material financial commitment.

From the tool's definition Tool name 'create_coupon' combined with description 'Create a new coupon for discounts' on a Stripe server (payment/financial platform). Coupons are financial instruments that reduce payment obligations.

Risk signalsCreates coupons affecting revenue

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs create_coupon safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Stripe, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For create_coupon, this is the rule to start with:

create_coupon Approval-gated

Any call to create_coupon is blocked until a human approves it. The rest of the server keeps working.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "create_coupon": {
      "deny_if": [
        {
          "conditions": [],
          "on_deny": "Requires human approval."
        }
      ]
    }
  }
}

GATE THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Stripe, apply this rule, and every create_coupon call is checked against it from then on.

FAQ

Questions about create_coupon

What does the create_coupon tool do? +

Create a new coupon for discounts. It is categorised as a Financial tool in the Stripe MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on create_coupon? +

Register the Stripe MCP server in PolicyLayer and add a rule for create_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 Stripe. Nothing to install.

What risk level is create_coupon? +

create_coupon is a Financial tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit create_coupon? +

Yes. Add a rate_limit block to the create_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 create_coupon completely? +

Set action: deny in the PolicyLayer policy for create_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 create_coupon? +

create_coupon is provided by the Stripe MCP server (@modelcontextprotocol/server-stripe). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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