append_to_document · Google Workspace MCP Server MCP

WHAT IT DOES

What append_to_document does on Google Workspace MCP Server

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

WHY IT NEEDS A POLICY

Why append_to_document needs a policy

This tool modifies an existing Google Document by adding content to it. This is a reversible write operation (the appended text could be manually removed), so it falls under Write rather than Destructive. Misuse could lead to unwanted content being added to important documents, giving it medium severity.

From the tool's definition Append text to the end of a Google Document

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

append_to_document Rate-limited

append_to_document 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": {
    "append_to_document": {
      "limits": [
        {
          "counter": "append_to_document_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 Google Workspace MCP Server, so you can run agents against it safely.

FAQ

Questions about append_to_document

What does the append_to_document tool do? +

Append text to the end of a Google Document. It is categorised as a Write tool in the Google Workspace 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 append_to_document? +

Register the Google Workspace MCP Server MCP server in PolicyLayer and add a rule for append_to_document: 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 Workspace MCP Server. Nothing to install.

What risk level is append_to_document? +

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

Can I rate-limit append_to_document? +

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

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

append_to_document is provided by the Google Workspace MCP Server MCP server (pbulbule13/google-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.