create_spreadsheet

Create new Google Spreadsheet

SERVERNcp SOURCE@portel/ncp

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-github-portel-dev-ncp/create-spreadsheet.md

WHAT IT DOES

What create_spreadsheet does on Ncp

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

RISK

Why create_spreadsheet is rated Medium

This tool creates a new spreadsheet, which is a reversible write operation. It does not execute arbitrary code, delete data, or move money. The severity is medium because creating spreadsheets in a user's Google account could consume quota, clutter the workspace, or be part of a broader attack to establish persistence or exfiltrate data, but the immediate damage is limited and the action can be undone by deletion.

From the tool's definition Tool name 'create_spreadsheet' and description 'Create new Google Spreadsheet' indicate creation of a new data resource in Google Sheets.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs create_spreadsheet safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Ncp, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For create_spreadsheet, this is the rule to start with:

create_spreadsheet Rate-limited

create_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": {
    "create_spreadsheet": {
      "limits": [
        {
          "counter": "create_spreadsheet_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Ncp, apply this rule, and every create_spreadsheet call is checked against it from then on.

FAQ

Questions about create_spreadsheet

What does the create_spreadsheet tool do? +

Create new Google Spreadsheet. It is categorised as a Write tool in the Ncp MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on create_spreadsheet? +

Register the Ncp MCP server in PolicyLayer and add a rule for create_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 Ncp. Nothing to install.

What risk level is create_spreadsheet? +

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

Can I rate-limit create_spreadsheet? +

Yes. Add a rate_limit block to the create_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 create_spreadsheet completely? +

Set action: deny in the PolicyLayer policy for create_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 create_spreadsheet? +

create_spreadsheet is provided by the Ncp MCP server (@portel/ncp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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