gmail_remove_label · Google MCP: Risk & Policy

WHAT IT DOES

What gmail_remove_label does on Google

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

WHY IT NEEDS A POLICY

Why gmail_remove_label needs a policy

Removing labels from a Gmail message modifies message metadata (organization/categorization) but does not delete the message itself. This is reversible — labels can be re-added — making it a Write operation rather than Destructive. Misuse could disorganize a user's inbox at scale, hence medium severity.

From the tool's definition Remove labels from a Gmail message (comma-separated label IDs)

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

gmail_remove_label Rate-limited

gmail_remove_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": {
    "gmail_remove_label": {
      "limits": [
        {
          "counter": "gmail_remove_label_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Google, so you can run agents against it safely.

FAQ

Questions about gmail_remove_label

What does the gmail_remove_label tool do? +

Remove labels from a Gmail message (comma-separated label IDs). It is categorised as a Write tool in the Google MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on gmail_remove_label? +

Register the Google MCP server in PolicyLayer and add a rule for gmail_remove_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 Google. Nothing to install.

What risk level is gmail_remove_label? +

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

Can I rate-limit gmail_remove_label? +

Yes. Add a rate_limit block to the gmail_remove_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 gmail_remove_label completely? +

Set action: deny in the PolicyLayer policy for gmail_remove_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 gmail_remove_label? +

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