transfer_subscription · OneSignal MCP Server MCP

WHAT IT DOES

What transfer_subscription does on OneSignal MCP Server

AI agents use transfer_subscription to commit financial operations through OneSignal MCP Server — usually the final step of a payment, billing, or trading workflow. A call moves real money.

WHY IT NEEDS A POLICY

Why transfer_subscription needs a policy

transfer_subscription moves real money, and an autonomous agent will call it with the same confidence it calls a search tool. A misread instruction or an injected prompt is all it takes to drain an account or blow a budget.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

transfer_subscription Approval-gated

Any call to transfer_subscription 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": {
    "transfer_subscription": {
      "deny_if": [
        {
          "conditions": [],
          "on_deny": "Requires human approval."
        }
      ]
    }
  }
}

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Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches OneSignal MCP Server, so you can run agents against it safely.

FAQ

Questions about transfer_subscription

What does the transfer_subscription tool do? +

Transfer a subscription from one user to another. It is categorised as a Financial tool in the OneSignal MCP Server MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on transfer_subscription? +

Register the OneSignal MCP Server MCP server in PolicyLayer and add a rule for transfer_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 OneSignal MCP Server. Nothing to install.

What risk level is transfer_subscription? +

transfer_subscription 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 transfer_subscription? +

Yes. Add a rate_limit block to the transfer_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.

How do I block transfer_subscription completely? +

Set action: deny in the PolicyLayer policy for transfer_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.

What MCP server provides transfer_subscription? +

transfer_subscription is provided by the OneSignal MCP Server MCP server (weirdbrains/onesignal-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.