creds_rotate · ML Lab MCP: Risk & Policy

WHAT IT DOES

What creds_rotate does on ML Lab MCP

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

WHY IT NEEDS A POLICY

Why creds_rotate needs a policy

Credential rotation is a Write operation that creates new credentials and invalidates existing ones. While partially destructive (old credentials stop working), it is a standard, recoverable security operation — new credentials are issued. However, misuse could disrupt running services by invalidating active credentials across GPU backends and cloud providers (Lambda Labs, RunPod, SSH VPS), causing high blast radius.

From the tool's definition 'Rotate credentials for a provider' — rotating credentials generates new secrets and invalidates old ones

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

creds_rotate Rate-limited

creds_rotate 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": {
    "creds_rotate": {
      "limits": [
        {
          "counter": "creds_rotate_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 ML Lab MCP, so you can run agents against it safely.

FAQ

Questions about creds_rotate

What does the creds_rotate tool do? +

Rotate credentials for a provider. It is categorised as a Write tool in the ML Lab MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on creds_rotate? +

Register the ML Lab MCP server in PolicyLayer and add a rule for creds_rotate: 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 ML Lab MCP. Nothing to install.

What risk level is creds_rotate? +

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

Can I rate-limit creds_rotate? +

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

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

creds_rotate is provided by the ML Lab MCP server (pushpullcommitpush/ml-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.