previewSubscriptionCancellation

SERVERStable Baseline SOURCEhttps://api.stablebaseline.io/functions/v1/cloud-serve/mcp

Critical RISK CLASS

Category Financial

Parameters 11 required

Recommended Approval-gatedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-stablebaseline-sb/previewsubscriptioncancellation.md

WHAT IT DOES

What previewSubscriptionCancellation does on Stable Baseline

AI agents use previewSubscriptionCancellation to commit financial operations through Stable Baseline, usually the final step of a payment, billing, or trading workflow. A call moves real money.

Parameter	Type	Required	Description
`organisation_id`	string	Yes

Parameters from the server's own tool schema.

RISK

Why previewSubscriptionCancellation is rated Critical

This tool initiates the subscription cancellation workflow by generating a confirmation_token used to complete the cancellation. While described as a 'soft cancel only' preview, it is tightly coupled to a Financial action (subscription cancellation) and produces a token that directly enables the irreversible financial operation.

From the tool's definition 'Preview the consequences of cancelling. Returns confirmation_token plus summary {remaining_credits, prepaid_days, prepaid_value_aud, feature_loss[], at_risk_seats}' and 'Use when the user asks to cancel, end, or stop their subscription — ALWAYS call this…

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs previewSubscriptionCancellation safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Stable Baseline, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For previewSubscriptionCancellation, this is the rule to start with:

previewSubscriptionCancellation Approval-gated

Any call to previewSubscriptionCancellation is blocked until a human approves it. The rest of the server keeps working.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "previewSubscriptionCancellation": {
      "deny_if": [
        {
          "conditions": [],
          "on_deny": "Requires human approval."
        }
      ]
    }
  }
}

GATE THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Stable Baseline, apply this rule, and every previewSubscriptionCancellation call is checked against it from then on.

FAQ

Questions about previewSubscriptionCancellation

What does the previewSubscriptionCancellation tool do? +

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 Financial tool in the Stable Baseline MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

What parameters does previewSubscriptionCancellation accept? +

previewSubscriptionCancellation accepts 1 parameter: organisation_id. Required: organisation_id. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on previewSubscriptionCancellation? +

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.

What risk level is previewSubscriptionCancellation? +

previewSubscriptionCancellation is a Financial tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit previewSubscriptionCancellation? +

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.

How do I block previewSubscriptionCancellation completely? +

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.

What MCP server provides previewSubscriptionCancellation? +

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.

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