cancel_subscription · Payoza MCP Server MCP: Risk & Policy

WHAT IT DOES

What cancel_subscription does on Payoza MCP Server

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

WHY IT NEEDS A POLICY

Why cancel_subscription needs a policy

Cancelling a subscription is a financial operation that terminates an active payment obligation/recurring billing arrangement. This has direct financial consequences for both the business and the customer, making it a Financial category action. The blast radius is high because an AI agent misusing this tool could inadvertently cancel legitimate customer subscriptions, resulting in service disruption and revenue loss.

From the tool's definition Cancel a subscription by ID

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

cancel_subscription Approval-gated

Any call to cancel_subscription 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": {
    "cancel_subscription": {
      "deny_if": [
        {
          "conditions": [],
          "on_deny": "Requires human approval."
        }
      ]
    }
  }
}

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

FAQ

Questions about cancel_subscription

What does the cancel_subscription tool do? +

Cancel a subscription by ID. It is categorised as a Financial tool in the Payoza MCP Server MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on cancel_subscription? +

Register the Payoza MCP Server MCP server in PolicyLayer and add a rule for cancel_subscription: 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 Payoza MCP Server. Nothing to install.

What risk level is cancel_subscription? +

cancel_subscription 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 cancel_subscription? +

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

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

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