mittwald_registry_update · Mittwald MCP Server MCP

WHAT IT DOES

What mittwald_registry_update does on Mittwald MCP Server

AI agents use mittwald_registry_update 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_registry_update needs a policy

The tool modifies an existing registry configuration without deleting it, making it a Write operation rather than Destructive. However, the severity is high because registry updates can have cascading effects on application deployments and functionality.

From the tool's definition Tool name contains 'update' and description states 'Update an existing registry in Mittwald' — indicates modification of existing data. Registry updates can affect application configuration, dependencies, and deployment behavior.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

mittwald_registry_update Rate-limited

mittwald_registry_update 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_registry_update": {
      "limits": [
        {
          "counter": "mittwald_registry_update_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_registry_update

What does the mittwald_registry_update tool do? +

Update an existing registry in Mittwald. 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_registry_update? +

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

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

Can I rate-limit mittwald_registry_update? +

Yes. Add a rate_limit block to the mittwald_registry_update 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_registry_update completely? +

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

mittwald_registry_update 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.