complete_google_auth_tool

THE RISK

Low Risk

Why complete_google_auth_tool needs a policy

This tool completes an OAuth authentication flow, which is an identity/authorization operation. It doesn't read data, write data, execute code, delete anything, or move money — it establishes credentials/session. The closest category is Other, as OAuth completion is a setup/auth operation. Misuse could enable unauthorized access, but the tool itself doesn't perform a harmful action directly.

From the tool's definition Complete the Google OAuth flow with the redirect URL

Documented attack patterns abuse exactly the kind of access complete_google_auth_tool gives an agent:

POLICY

How to control complete_google_auth_tool

PolicyLayer is an MCP gateway — it sits between your AI agents and Apps Script MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for complete_google_auth_tool:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "complete_google_auth_tool": {
      "limits": [
        {
          "counter": "complete_google_auth_tool_rate",
          "window": "minute",
          "max": 60,
          "scope": "grant"
        }
      ]
    }
  }
}

complete_google_auth_tool gets a rate cap, and everything else on the server is denied unless you say otherwise.

Create a free account and register Apps Script MCP — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

SET A RULE FOR THIS TOOL →

Free to start. No card required.

EXPLORE

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Tool risk categories → How PolicyLayer classifies MCP tools by what they can do.
MCP tool → What an MCP tool is and how clients discover and call it.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about complete_google_auth_tool

What does the complete_google_auth_tool tool do? +

Complete the Google OAuth flow with the redirect URL. It is categorised as a Other tool in the Apps Script MCP MCP Server, which means it performs auxiliary operations.

How do I enforce a policy on complete_google_auth_tool? +

Register the Apps Script MCP server in PolicyLayer and add a rule for complete_google_auth_tool: 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 Apps Script MCP. Nothing to install.

What risk level is complete_google_auth_tool? +

complete_google_auth_tool is a Other tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit complete_google_auth_tool? +

Yes. Add a rate_limit block to the complete_google_auth_tool 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 complete_google_auth_tool completely? +

Set action: deny in the PolicyLayer policy for complete_google_auth_tool. 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 complete_google_auth_tool? +

complete_google_auth_tool is provided by the Apps Script MCP server (sam-ent/google-automation-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Apps Script MCP tool call.

Start from Apps Script MCP, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →