Cancel one or more active subscriptions by deleting their order records. This removes the recurring payment schedule and stops all future charges. Associated open orders will no longer be billed. This cannot be undone — to restart billing, a new transaction must be created. To collect all remaini...
AI agents use cancel_subscription to commit financial operations through Ontraport MCP Server — usually the final step of a payment, billing, or trading workflow. A call moves real money.
This tool directly terminates financial relationships by canceling subscriptions and stopping future charges. It is explicitly irreversible ('cannot be undone'), and affects recurring revenue/billing obligations, placing it firmly in the Financial category with critical severity due to the permanent loss of recurring payment schedules.
From the tool's definition Cancel one or more active subscriptions by deleting their order records. This removes the recurring payment schedule and stops all future charges. This cannot be undone — to restart billing, a new transaction must be created.
Attacks that exploit this kind of access
Cancel one or more active subscriptions by deleting their order records. This removes the recurring payment schedule and stops all future charges. Associated open orders will no longer be billed. This cannot be undone — to restart billing, a new transaction must be created. To collect all remaining payments on a payment plan immediately instead of canceling: (1) use get_open_orders filtered by contact_id to find payment_remaining and payment_amount, (2) use process_transaction to charge a one-time amount for the remaining balance, (3) use cancel_subscription to remove the old plan. It is categorised as a Financial tool in the Ontraport MCP Server MCP Server, which means it involves financial transactions. Block by default and require explicit approval.
Register the Ontraport 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 Ontraport MCP Server. Nothing to install.
cancel_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 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.
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.
cancel_subscription is provided by the Ontraport MCP Server MCP server (landonray/mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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