create_gmail_label · Gg MCP: Risk & Policy

WHAT IT DOES

What create_gmail_label does on Gg

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

WHY IT NEEDS A POLICY

Why create_gmail_label needs a policy

Creating a Gmail label is a reversible write operation that adds metadata/organizational structure to a Gmail account. It does not retrieve data (Read), execute arbitrary code (Execute), delete anything (Destructive), or involve financial transactions (Financial). The blast radius is medium because an AI agent creating many labels could clutter the email system, but the action is fully reversible by deletion.

From the tool's definition Tool description states 'Create a new label in Gmail' — this creates a new organizational structure within Gmail that persists and modifies the user's email system state.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_gmail_label Rate-limited

create_gmail_label 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": {
    "create_gmail_label": {
      "limits": [
        {
          "counter": "create_gmail_label_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 Gg, so you can run agents against it safely.

FAQ

Questions about create_gmail_label

What does the create_gmail_label tool do? +

Create a new label in Gmail. It is categorised as a Write tool in the Gg MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on create_gmail_label? +

Register the Gg MCP server in PolicyLayer and add a rule for create_gmail_label: 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 Gg. Nothing to install.

What risk level is create_gmail_label? +

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

Can I rate-limit create_gmail_label? +

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

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

create_gmail_label is provided by the Gg MCP server (tannht/google-cloud-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.