gmail_manage_labels · Gmail MCP Server MCP: Risk & Policy

WHAT IT DOES

What gmail_manage_labels does on Gmail MCP Server

AI agents use gmail_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 gmail_manage_labels needs a policy

While the tool performs label management operations (create, rename, add/remove), these are reversible write actions. 'Delete' here refers to deleting labels themselves (not email messages), which can be recreated. The tool does not irreversibly destroy email content or execute arbitrary code. It modifies metadata/organization of the inbox, representing a Write category risk.

From the tool's definition Tool description explicitly states 'create, delete, rename labels, or add/remove labels from messages.' The operations include creating new labels, renaming existing ones, and modifying message labels—all reversible write operations.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

gmail_manage_labels Rate-limited

gmail_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": {
    "gmail_manage_labels": {
      "limits": [
        {
          "counter": "gmail_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 gmail_manage_labels

What does the gmail_manage_labels tool do? +

Manage Gmail labels: create, delete, rename labels, or add/remove labels from messages. 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 gmail_manage_labels? +

Register the Gmail MCP Server MCP server in PolicyLayer and add a rule for gmail_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 gmail_manage_labels? +

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

Can I rate-limit gmail_manage_labels? +

Yes. Add a rate_limit block to the gmail_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 gmail_manage_labels completely? +

Set action: deny in the PolicyLayer policy for gmail_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 gmail_manage_labels? +

gmail_manage_labels is provided by the Gmail MCP Server MCP server (murphy360/mcp_gmail). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.