mittwald_app_create_node · Mittwald MCP Server MCP

WHAT IT DOES

What mittwald_app_create_node does on Mittwald MCP Server

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

WHY IT NEEDS A POLICY

Why mittwald_app_create_node needs a policy

This tool creates a new Node.js application, which is a reversible write operation (the app can be deleted later). It does not execute arbitrary code, delete data, or involve financial transactions. Severity is medium because creating apps consumes resources and could lead to unintended deployments.

From the tool's definition Create a Node.js app

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

mittwald_app_create_node Rate-limited

mittwald_app_create_node 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": {
    "mittwald_app_create_node": {
      "limits": [
        {
          "counter": "mittwald_app_create_node_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 Mittwald MCP Server, so you can run agents against it safely.

FAQ

Questions about mittwald_app_create_node

What does the mittwald_app_create_node tool do? +

Create a Node.js app. It is categorised as a Write tool in the Mittwald 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 mittwald_app_create_node? +

Register the Mittwald MCP Server MCP server in PolicyLayer and add a rule for mittwald_app_create_node: 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 Mittwald MCP Server. Nothing to install.

What risk level is mittwald_app_create_node? +

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

Can I rate-limit mittwald_app_create_node? +

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

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

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