apply_coupon

Apply a coupon code to the account

SERVERinstantKOM MCP Server SOURCEinstantkom/mcp-server

Critical RISK CLASS

Category Financial

Parameters 00 required

Recommended Approval-gatedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/instantkom-mcp-server/apply-coupon.md

WHAT IT DOES

What apply_coupon does on instantKOM MCP Server

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

RISK

Why apply_coupon is rated Critical

Applying a coupon code directly affects the financial state of an account by modifying billing, subscription costs, or payment obligations. This constitutes a financial commitment or discount that alters what the account owner pays, making it a Financial category action. Misuse could apply invalid, fraudulent, or unintended coupons affecting billing.

From the tool's definition Apply a coupon code to the account

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs apply_coupon safely

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

apply_coupon Approval-gated

Any call to apply_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": {
    "apply_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 instantKOM MCP Server, apply this rule, and every apply_coupon call is checked against it from then on.

FAQ

Questions about apply_coupon

What does the apply_coupon tool do? +

Apply a coupon code to the account. It is categorised as a Financial tool in the instantKOM MCP Server MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on apply_coupon? +

Register the instantKOM MCP Server MCP server in PolicyLayer and add a rule for apply_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 instantKOM MCP Server. Nothing to install.

What risk level is apply_coupon? +

apply_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 apply_coupon? +

Yes. Add a rate_limit block to the apply_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 apply_coupon completely? +

Set action: deny in the PolicyLayer policy for apply_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 apply_coupon? +

apply_coupon is provided by the instantKOM MCP Server MCP server (instantkom/mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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