Preview the consequences of cancelling. Returns confirmation_token plus summary {remaining_credits, prepaid_days, prepaid_value_aud, feature_loss[], at_risk_seats}. Soft cancel only. Rate limit 30/h. Use when the user asks to cancel, end, or stop their subscription — ALWAYS call this first to sho...
Part of the Stable Baseline server.
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AI agents may call previewSubscriptionCancellation to permanently remove or destroy resources in Stable Baseline. Without a policy, an autonomous agent could delete critical data in a loop with no way to undo the damage. PolicyLayer blocks destructive tools by default and requires explicit human approval before enabling them.
Without a policy, an AI agent could call previewSubscriptionCancellation in a loop, permanently destroying resources in Stable Baseline. There is no undo for destructive operations. PolicyLayer blocks this tool by default and only allows it when a human explicitly approves the action.
Destructive tools permanently remove data. Block by default. Only enable with explicit approval workflows.
{
"version": "1",
"default": "deny",
"hide": [
"previewSubscriptionCancellation"
]
}See the full Stable Baseline policy for all 184 tools.
These attack patterns abuse exactly the kind of access previewSubscriptionCancellation gives an agent. Each links to the full case and the policy that stops it:
Other destructive tools across the catalogue. The same approach applies to each: deny by default, or require human approval.
Preview the consequences of cancelling. Returns confirmation_token plus summary {remaining_credits, prepaid_days, prepaid_value_aud, feature_loss[], at_risk_seats}. Soft cancel only. Rate limit 30/h. Use when the user asks to cancel, end, or stop their subscription — ALWAYS call this first to show the cost of cancelling before passing the token to cancelSubscription.. It is categorised as a Destructive tool in the Stable Baseline MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Stable Baseline MCP server in PolicyLayer and add a rule for previewSubscriptionCancellation: 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 Stable Baseline. Nothing to install.
previewSubscriptionCancellation is a Destructive 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 previewSubscriptionCancellation 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 previewSubscriptionCancellation. 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.
previewSubscriptionCancellation is provided by the Stable Baseline MCP server (https://api.stablebaseline.io/functions/v1/cloud-serve/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 184 Stable Baseline tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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