apps_create

THE RISK

Medium Risk

Why apps_create needs a policy

This tool creates new app resources in the analytics system, which is a reversible write operation. While the description is empty, the naming convention and server context make the function clear. Severity is medium because creating analytics apps could allow an AI agent to pollute the analytics environment, but damage is limited to the analytics platform and is reversible (apps can be deleted).

From the tool's definition Tool name 'apps_create' indicates creation of app resources within Piwik PRO Analytics. Server description confirms it supports 'manage Piwik PRO Analytics resources including apps' and 'tag management operations.' The '_create' suffix pattern is consistent…

Documented attack patterns abuse exactly the kind of access apps_create gives an agent:

POLICY

How to control apps_create

PolicyLayer is an MCP gateway — it sits between your AI agents and Piwik PRO MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for apps_create:

policy.json

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

apps_create 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.

Create a free account and register Piwik PRO MCP Server — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

LIMIT THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More Piwik PRO MCP Server tools

Destructive analytics_annotations_delete Delete a user annotation by ID. Destructive tags_delete Delete a tag from Piwik PRO Tag Manager. Destructive tracker_settings_app_delete tracker_settings_app_delete Destructive triggers_delete Delete a trigger from Piwik PRO Tag Manager. Destructive variables_delete variables_delete Execute analytics_query_execute analytics_query_execute Execute versions_publish_draft versions_publish_draft Write analytics_annotations_create analytics_annotations_create

All 66 Piwik PRO MCP Server tools →

Write tools on other servers

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Argument validation → Checking tool call arguments against schema and policy before they run.
Scoped token → Per-person credentials that grant a defined subset of servers and tools.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about apps_create

What does the apps_create tool do? +

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

How do I enforce a policy on apps_create? +

Register the Piwik PRO MCP Server MCP server in PolicyLayer and add a rule for apps_create: 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 Piwik PRO MCP Server. Nothing to install.

What risk level is apps_create? +

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

Can I rate-limit apps_create? +

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

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

apps_create is provided by the Piwik PRO MCP Server MCP server (piwikpro/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Piwik PRO MCP Server tool call.

Start from Piwik PRO MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →