update_server · SuperMCP Server MCP: Risk & Policy

WHAT IT DOES

What update_server does on SuperMCP Server

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

WHY IT NEEDS A POLICY

Why update_server needs a policy

This tool modifies server configurations in a registry, which is a Write operation (creates or modifies data reversibly). The severity is high because misconfiguring servers in an orchestration layer could disrupt AI assistant functionality, compromise security settings, or redirect tool calls to malicious servers.

From the tool's definition Tool name 'update_server' and description 'Update a server's configuration in the registry' indicates modification of server configurations. This is a reversible change operation (not deletion), but affects critical infrastructure settings.

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 SuperMCP Server, so you can run agents against it safely.

FAQ

Questions about update_server

What does the update_server tool do? +

Update a server's configuration in the registry. It is categorised as a Write tool in the SuperMCP 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 update_server? +

Register the SuperMCP Server 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 SuperMCP Server. 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 SuperMCP Server MCP server (yakupatahanov/supermcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.