gmail_rename_label · Gmail MCP Server MCP: Risk & Policy

WHAT IT DOES

What gmail_rename_label does on Gmail MCP Server

AI agents use gmail_rename_label 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_rename_label needs a policy

The tool modifies existing Gmail label data by changing its name. This is a Write operation rather than Destructive because renaming is reversible—the label and its associations persist. Severity is medium because misuse could disrupt email organization and create confusion, but the impact is limited to label structure without data loss or financial implications.

From the tool's definition Tool name 'gmail_rename_label' and description 'Rename an existing Gmail label' indicate modification of label metadata. This is a reversible write operation (labels can be renamed back to original names).

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

gmail_rename_label Rate-limited

gmail_rename_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_rename_label": {
      "limits": [
        {
          "counter": "gmail_rename_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 Gmail MCP Server, so you can run agents against it safely.

FAQ

Questions about gmail_rename_label

What does the gmail_rename_label tool do? +

Rename an existing Gmail label. Cannot rename system labels. 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_rename_label? +

Register the Gmail MCP Server MCP server in PolicyLayer and add a rule for gmail_rename_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 Gmail MCP Server. Nothing to install.

What risk level is gmail_rename_label? +

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

Can I rate-limit gmail_rename_label? +

Yes. Add a rate_limit block to the gmail_rename_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_rename_label completely? +

Set action: deny in the PolicyLayer policy for gmail_rename_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_rename_label? +

gmail_rename_label 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.