cancel_subscription
Cancel a subscription. Destructive — turns off auto-renew and prevents further billing cycles. Existing paid periods stay valid until end.
This record as markdown: /tools/io-favcrm-favcrm/cancel-subscription.md
What cancel_subscription does on FavCRM
AI agents use cancel_subscription to commit financial operations through FavCRM, usually the final step of a payment, billing, or trading workflow. A call moves real money.
| Parameter | Type | Required | Description |
|---|---|---|---|
subscriptionId | string | Yes | Subscription ID |
Parameters from the server's own tool schema.
Why cancel_subscription is rated Critical
Cancelling a subscription directly affects financial obligations by terminating recurring billing. This is a Financial category action because it commits a financial change (stopping future billing cycles).
From the tool's definition Cancel a subscription. Destructive — turns off auto-renew and prevents further billing cycles.
Attacks that exploit this kind of access
The rule that runs cancel_subscription safely
PolicyLayer is an MCP gateway: it sits between your AI agents and FavCRM, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For cancel_subscription, this is the rule to start with:
Any call to cancel_subscription is blocked until a human approves it. The rest of the server keeps working.
The button opens the PolicyLayer dashboard: create your workspace, connect FavCRM, apply this rule, and every cancel_subscription call is checked against it from then on.
Questions about cancel_subscription
Cancel a subscription. Destructive — turns off auto-renew and prevents further billing cycles. Existing paid periods stay valid until end. It is categorised as a Financial tool in the FavCRM MCP Server, which means it involves financial transactions. Block by default and require explicit approval.
cancel_subscription accepts 1 parameter: subscriptionId. Required: subscriptionId. The full parameter table on this page comes from the server's own tool schema.
Register the FavCRM 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 FavCRM. 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 FavCRM MCP server (https://api.favcrm.io/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
More on FavCRM, and thousands of servers like it.
Across the catalogue