batchAddGmailLabels · Google Workspace MCP Server MCP

WHAT IT DOES

What batchAddGmailLabels does on Google Workspace MCP Server

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

WHY IT NEEDS A POLICY

Why batchAddGmailLabels needs a policy

This tool modifies email metadata (labels) in Gmail, which is a write operation. It is reversible—labels can be added or removed without data loss. The severity is medium because while labeling affects email organization and could be misused to hide/categorize emails deceptively, it does not delete data, move money, or execute arbitrary code.

From the tool's definition Tool name 'batchAddGmailLabels' and description states it 'Add labels to multiple Gmail messages at once.' Labels are metadata that can be added and removed reversibly without destructive consequences.

Risk signalsBulk/mass operation — affects multiple targets

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

batchAddGmailLabels Rate-limited

batchAddGmailLabels 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": {
    "batchAddGmailLabels": {
      "limits": [
        {
          "counter": "batchaddgmaillabels_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 Google Workspace MCP Server, so you can run agents against it safely.

FAQ

Questions about batchAddGmailLabels

What does the batchAddGmailLabels tool do? +

Add labels to multiple Gmail messages at once. More efficient than adding labels one by one. It is categorised as a Write tool in the Google Workspace 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 batchAddGmailLabels? +

Register the Google Workspace MCP Server MCP server in PolicyLayer and add a rule for batchAddGmailLabels: 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 Google Workspace MCP Server. Nothing to install.

What risk level is batchAddGmailLabels? +

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

Can I rate-limit batchAddGmailLabels? +

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

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

batchAddGmailLabels is provided by the Google Workspace MCP Server MCP server (pm990320/google-workspace-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.