update_server · Coolify MCP Tools MCP: Risk & Policy

WHAT IT DOES

What update_server does on Coolify MCP Tools

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

WHY IT NEEDS A POLICY

Why update_server needs a policy

This tool modifies server configuration or properties (reversible in most cases) rather than executing arbitrary commands or deleting data. It falls under Write rather than Execute because the action itself is a configuration update, not execution of arbitrary code. However, the impact is significant because misconfigured server settings can cascade to many dependent services.

From the tool's definition Tool name 'update_server' and description 'Update a Coolify server' indicate modification of server configuration or state.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

update_server Rate-limited

update_server 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": {
    "update_server": {
      "limits": [
        {
          "counter": "update_server_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 Coolify MCP Tools, so you can run agents against it safely.

FAQ

Questions about update_server

What does the update_server tool do? +

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

How do I enforce a policy on update_server? +

Register the Coolify MCP Tools MCP server in PolicyLayer and add a rule for update_server: 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 Coolify MCP Tools. Nothing to install.

What risk level is update_server? +

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

Can I rate-limit update_server? +

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

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

update_server is provided by the Coolify MCP Tools MCP server (jplansink/coolify-mcp-tools). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.