Create a subscription from a product rate plan. POST /subscriptions/from-product-rateplan. Required: productRatePlanId, customerId, customerPaymentMethodId, billingAddressId, effectiveStartDate.
AI agents use create_subscription to commit financial operations through Rebillia MCP Server — usually the final step of a payment, billing, or trading workflow. A call moves real money.
This tool creates a recurring billing subscription tied to a customer's payment method, which commits ongoing financial obligations. It directly initiates a billing relationship that will result in repeated charges, making it Financial category with critical severity due to the potential for unwanted recurring charges if misused.
From the tool's definition Create a subscription from a product rate plan. Required: productRatePlanId, customerId, customerPaymentMethodId, billingAddressId, effectiveStartDate.
Attacks that exploit this kind of access
Create a subscription from a product rate plan. POST /subscriptions/from-product-rateplan. Required: productRatePlanId, customerId, customerPaymentMethodId, billingAddressId, effectiveStartDate. It is categorised as a Financial tool in the Rebillia MCP Server MCP Server, which means it involves financial transactions. Block by default and require explicit approval.
Register the Rebillia MCP Server 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 Rebillia MCP Server. Nothing to install.
create_subscription is a Financial tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
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.
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.
create_subscription is provided by the Rebillia MCP Server MCP server (rhinosaas/rebillia-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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