mittwald_app_upload · Mittwald MCP Server MCP: Risk & Policy

WHAT IT DOES

What mittwald_app_upload does on Mittwald MCP Server

AI agents use mittwald_app_upload 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_upload needs a policy

This tool modifies application state by uploading/replacing the filesystem of an app. It is reversible (files can be re-uploaded or replaced), making it Write rather than Destructive. The high severity reflects the blast radius: a compromised agent could corrupt an application's codebase, configuration, or dependencies. It does not delete data (thus not Destructive) and does not move money (not Financial).

From the tool's definition Tool name 'mittwald_app_upload' and description 'Upload the filesystem of an app to a project' indicate creating or modifying application files. The server context shows this executes Mittwald CLI commands with OAuth authentication.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

mittwald_app_upload Rate-limited

mittwald_app_upload 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_upload": {
      "limits": [
        {
          "counter": "mittwald_app_upload_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_upload

What does the mittwald_app_upload tool do? +

Upload the filesystem of an app to a project. 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_upload? +

Register the Mittwald MCP Server MCP server in PolicyLayer and add a rule for mittwald_app_upload: 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_upload? +

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

Can I rate-limit mittwald_app_upload? +

Yes. Add a rate_limit block to the mittwald_app_upload 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_upload completely? +

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

mittwald_app_upload 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.