appstore_create_subscription · Mimi Seed MCP: Risk & Policy

WHAT IT DOES

What appstore_create_subscription does on Mimi Seed

AI agents use appstore_create_subscription to create or update resources in Mimi Seed — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Mimi Seed environment.

WHY IT NEEDS A POLICY

Why appstore_create_subscription needs a policy

This tool creates (writes) a new subscription configuration in App Store Connect, which is reversible (subscriptions can be modified or deleted later). This is a Write operation rather than Destructive. However, severity is high because misconfigured subscriptions could commit financial obligations or affect customer billing relationships.

From the tool's definition Tool name 'appstore_create_subscription' indicates creation of a subscription resource on Apple's App Store. The server manages App Store operations including 'appstore_attach_build'.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

appstore_create_subscription Rate-limited

appstore_create_subscription stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "appstore_create_subscription": {
      "limits": [
        {
          "counter": "appstore_create_subscription_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

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

FAQ

Questions about appstore_create_subscription

What does the appstore_create_subscription tool do? +

appstore_create_subscription. It is categorised as a Write tool in the Mimi Seed MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on appstore_create_subscription? +

Register the Mimi Seed MCP server in PolicyLayer and add a rule for appstore_create_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 Mimi Seed. Nothing to install.

What risk level is appstore_create_subscription? +

appstore_create_subscription is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit appstore_create_subscription? +

Yes. Add a rate_limit block to the appstore_create_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 appstore_create_subscription completely? +

Set action: deny in the PolicyLayer policy for appstore_create_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 appstore_create_subscription? +

appstore_create_subscription is provided by the Mimi Seed MCP server (@yoonion/mimi-seed-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.