create_subscription

THE RISK

Critical Risk

Creating a subscription establishes a recurring financial obligation (automatic periodic payments). This falls squarely in the Financial category as it directly commits financial resources. The blast radius is critical because misuse could result in ongoing unauthorized charges that are difficult to reverse.

From the tool's definition 'Create a new subscription' - creates a recurring financial commitment/obligation on behalf of a user

Documented attack patterns abuse exactly the kind of access create_subscription gives an agent:

HOW TO CONTROL CREATE_SUBSCRIPTION

PolicyLayer is an MCP gateway — it sits between your AI agents and PayPal, and nothing reaches the server without passing your rules. This is the rule we recommend for create_subscription:

policy.json

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

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

Create a free account and register PayPal — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

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EXPLORE

More PayPal tools

Financial create_refund Process a refund for a captured payment. Financial pay_order Process payment for an authorized order Financial send_invoice Send an invoice to recipients Financial accept_dispute_claim Accept a dispute claim Financial create_invoice Create a new invoice in the PayPal system Financial create_order Create an order in PayPal system based on provided details Financial create_subscription_plan Create a new subscription plan Destructive cancel_sent_invoice Cancel a sent invoice

All 30 PayPal tools →

Financial tools on other servers

Atv build_deposit_tx Bitcoin MCP Server pay_invoice AbraFlexi bank_transaction_create Hilanet MCP decrease_coworker_salary

Go deeper

Critical-risk tools in PayPal → Every critical-risk tool this server exposes, in one view.
All critical-risk MCP tools → Every critical-risk tool across the catalogue, and the policy pattern that contains them.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
How to Add Spending Controls to Any MCP Agent →
Rate Limiting MCP Tool Calls: A Practical Guide →

FAQ

What does the create_subscription tool do? +

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

How do I enforce a policy on create_subscription? +

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

What risk level is create_subscription? +

create_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 create_subscription? +

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

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

create_subscription is provided by the PayPal MCP server (paypal/agent-toolkit). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every PayPal tool call.

Deterministic rules across all 30 PayPal tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.

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30 PayPal tools catalogued and risk-classified — across an index of 42,500+ MCP servers.

// WHAT CREATE_SUBSCRIPTION ON PAYPAL DOES

// THE RISK

// HOW TO CONTROL CREATE_SUBSCRIPTION

// EXPLORE