gmail_users_messages_batchModify

What gmail_users_messages_batchModify does on Google Workspace Gmail (gws CLI)

AI agents use gmail_users_messages_batchModify to create or update resources in Google Workspace Gmail (gws CLI), usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Google Workspace Gmail (gws CLI) environment.

Why gmail_users_messages_batchModify is rated Medium

This tool modifies message labels (metadata) on potentially many messages at once, which is a reversible write operation. While labels can be changed back, the ability to silently relabel large volumes of messages—including marking as spam, archiving, or organizing into custom folders—poses significant risk if misused by an agent without proper context or user intent.

From the tool's definition Tool name 'batchModify' and description 'Batch modify labels on multiple messages' indicate modification of message metadata. The batch operation on multiple messages amplifies the scope of impact.

Risk signalsBulk-modifies message organisation

The rule that runs gmail_users_messages_batchModify safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Google Workspace Gmail (gws CLI), and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For gmail_users_messages_batchModify, this is the rule to start with:

{
  "version": "1",
  "default": "deny",
  "tools": {
    "gmail_users_messages_batchModify": {
      "limits": [
        {
          "counter": "gmail_users_messages_batchmodify_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

Questions about gmail_users_messages_batchModify