Open the Stripe billing portal to manage your subscription, update payment method, or cancel. Returns a portal URL — tell the user to open it in their browser. Only works if you have an active Pro subscription.
AI agents use manage_billing to commit financial operations through QR for Agent — usually the final step of a payment, billing, or trading workflow. A call moves real money.
This tool interacts directly with Stripe billing, enabling subscription management, payment method changes, and cancellation. These are financial operations that can modify or terminate billing obligations, placing it firmly in the Financial category with high severity due to the potential for unintended subscription cancellation or payment method changes.
From the tool's definition 'manage your subscription, update payment method, or cancel' — opens Stripe billing portal to modify or cancel financial subscriptions
Attacks that exploit this kind of access
Open the Stripe billing portal to manage your subscription, update payment method, or cancel. Returns a portal URL — tell the user to open it in their browser. Only works if you have an active Pro subscription. It is categorised as a Financial tool in the QR for Agent MCP Server, which means it involves financial transactions. Block by default and require explicit approval.
Register the QR for Agent MCP server in PolicyLayer and add a rule for manage_billing: 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 QR for Agent. Nothing to install.
manage_billing 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 manage_billing 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 manage_billing. 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.
manage_billing is provided by the QR for Agent MCP server (qr-for-agent). 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.
Teams ship this data inside their own products. See what a licence covers →