insertImageFromUrl · Google Workspace MCP Server MCP

WHAT IT DOES

What insertImageFromUrl does on Google Workspace MCP Server

AI agents use insertImageFromUrl 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 insertImageFromUrl needs a policy

This tool modifies a Google Document by adding an image resource to it. While reversible through standard document editing (undo/delete), it represents a Write operation that changes document state. Severity is medium because the impact is limited to a single document's content and the operation is easily undone, but it could be misused to inject unwanted imagery into shared documents.

From the tool's definition The tool 'insertImageFromUrl' inserts an inline image into a Google Document, which creates/modifies document content.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

insertImageFromUrl Rate-limited

insertImageFromUrl 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": {
    "insertImageFromUrl": {
      "limits": [
        {
          "counter": "insertimagefromurl_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 insertImageFromUrl

What does the insertImageFromUrl tool do? +

Inserts an inline image into a Google Document from a publicly accessible URL. 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 insertImageFromUrl? +

Register the Google Workspace MCP Server MCP server in PolicyLayer and add a rule for insertImageFromUrl: 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 insertImageFromUrl? +

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

Can I rate-limit insertImageFromUrl? +

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

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

insertImageFromUrl is provided by the Google Workspace MCP Server MCP server (pm990320/google-workspace-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.