share_spreadsheet · Enhanced MCP Server MCP: Risk & Policy

WHAT IT DOES

What share_spreadsheet does on Enhanced MCP Server

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

WHY IT NEEDS A POLICY

Why share_spreadsheet needs a policy

Sharing a spreadsheet modifies its access control list (ACL), granting a new user permissions. This is a reversible write operation (access can be revoked). It does not delete data or execute code, but misuse could expose sensitive spreadsheet data to unintended parties, giving it a medium severity blast radius.

From the tool's definition 'Share a spreadsheet with a user' — grants access permissions to an existing document

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

share_spreadsheet Rate-limited

share_spreadsheet 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": {
    "share_spreadsheet": {
      "limits": [
        {
          "counter": "share_spreadsheet_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 Enhanced MCP Server, so you can run agents against it safely.

FAQ

Questions about share_spreadsheet

What does the share_spreadsheet tool do? +

Share a spreadsheet with a user. It is categorised as a Write tool in the Enhanced 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 share_spreadsheet? +

Register the Enhanced MCP Server MCP server in PolicyLayer and add a rule for share_spreadsheet: 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 Enhanced MCP Server. Nothing to install.

What risk level is share_spreadsheet? +

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

Can I rate-limit share_spreadsheet? +

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

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

share_spreadsheet is provided by the Enhanced MCP Server MCP server (pbulbule13/mcpwithgoogle). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.