get_or_create_label · Gmail AutoAuth MCP Server MCP

WHAT IT DOES

What get_or_create_label does on Gmail AutoAuth MCP Server

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

WHY IT NEEDS A POLICY

Why get_or_create_label needs a policy

The tool performs a read when the label exists, but falls back to creating a new label when it doesn't, making the dominant action a Write. Creating labels is reversible (labels can be deleted), so it doesn't rise to Destructive. Severity is medium because misuse could clutter label structures or be used to set up malicious labeling workflows, but blast radius is limited.

From the tool's definition 'Gets an existing label by name or creates it if it doesn't exist' — the tool may create a new label (a write operation) if one does not already exist

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

get_or_create_label Rate-limited

get_or_create_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": {
    "get_or_create_label": {
      "limits": [
        {
          "counter": "get_or_create_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 AutoAuth MCP Server, so you can run agents against it safely.

FAQ

Questions about get_or_create_label

What does the get_or_create_label tool do? +

Gets an existing label by name or creates it if it doesn. It is categorised as a Write tool in the Gmail AutoAuth 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 get_or_create_label? +

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

What risk level is get_or_create_label? +

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

Can I rate-limit get_or_create_label? +

Yes. Add a rate_limit block to the get_or_create_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 get_or_create_label completely? +

Set action: deny in the PolicyLayer policy for get_or_create_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 get_or_create_label? +

get_or_create_label is provided by the Gmail AutoAuth MCP Server MCP server (sepehrshapouri/gmail-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.