manage-labels · Gmail MCP Server MCP: Risk & Policy

WHAT IT DOES

What manage-labels does on Gmail MCP Server

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

WHY IT NEEDS A POLICY

Why manage-labels needs a policy

This tool performs reversible data modifications: creating and updating Gmail labels are Write operations, while deleting labels is reversible (unlike deleting emails). The severity is medium because label mismanagement could disrupt email organization and filtering but does not permanently destroy email content or cause financial harm.

From the tool's definition Tool description explicitly states "list, create, update, delete" operations on Gmail labels. The delete operation is reversible for labels (labels can be recreated), distinguishing it from destructive data deletion.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

manage-labels Rate-limited

manage-labels 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": {
    "manage-labels": {
      "limits": [
        {
          "counter": "manage-labels_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 Gmail MCP Server, so you can run agents against it safely.

FAQ

Questions about manage-labels

What does the manage-labels tool do? +

Manage Gmail labels (list, create, update, delete). It is categorised as a Write tool in the Gmail 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 manage-labels? +

Register the Gmail MCP Server MCP server in PolicyLayer and add a rule for manage-labels: 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 Gmail MCP Server. Nothing to install.

What risk level is manage-labels? +

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

Can I rate-limit manage-labels? +

Yes. Add a rate_limit block to the manage-labels 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 manage-labels completely? +

Set action: deny in the PolicyLayer policy for manage-labels. 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 manage-labels? +

manage-labels is provided by the Gmail MCP Server MCP server (solonabot/gmail-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.