Upgrade to the Pro plan ($19/month) for unlimited QR codes, scans, and webhooks. Returns a Stripe Checkout URL — tell the user to open it in their browser to complete payment. The upgrade takes effect automatically after payment.
AI agents use upgrade_to_pro 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 initiates a paid subscription at $19/month via Stripe. It directly commits a financial obligation by creating a payment checkout session. Any misuse by an AI agent could result in unauthorized charges to the user.
From the tool's definition Upgrade to the Pro plan ($19/month) ... Returns a Stripe Checkout URL ... to complete payment
Attacks that exploit this kind of access
Upgrade to the Pro plan ($19/month) for unlimited QR codes, scans, and webhooks. Returns a Stripe Checkout URL — tell the user to open it in their browser to complete payment. The upgrade takes effect automatically after payment. 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 upgrade_to_pro: 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.
upgrade_to_pro 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 upgrade_to_pro 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 upgrade_to_pro. 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.
upgrade_to_pro 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.
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