vibekit_create_app · Vibekit MCP: Risk & Policy

WHAT IT DOES

What vibekit_create_app does on Vibekit

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

WHY IT NEEDS A POLICY

Why vibekit_create_app needs a policy

Creating a new hosted application is a Write operation—it creates new data/resources that persist and can be modified later, but is reversible (apps can be deleted). The severity is high because creating an app could: consume cloud resources/costs, potentially lock in dependencies, or enable deployment of arbitrary code.

From the tool's definition Tool name 'vibekit_create_app' and description 'Create a new hosted app from a template' indicate creation of a new resource with persistent effects.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

vibekit_create_app Rate-limited

vibekit_create_app 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": {
    "vibekit_create_app": {
      "limits": [
        {
          "counter": "vibekit_create_app_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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

FAQ

Questions about vibekit_create_app

What does the vibekit_create_app tool do? +

Create a new hosted app from a template. It is categorised as a Write tool in the Vibekit MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on vibekit_create_app? +

Register the Vibekit MCP server in PolicyLayer and add a rule for vibekit_create_app: 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 Vibekit. Nothing to install.

What risk level is vibekit_create_app? +

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

Can I rate-limit vibekit_create_app? +

Yes. Add a rate_limit block to the vibekit_create_app 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 vibekit_create_app completely? +

Set action: deny in the PolicyLayer policy for vibekit_create_app. 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 vibekit_create_app? +

vibekit_create_app is provided by the Vibekit MCP server (vibekit-apps/vibekit-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.