create_sheet

Create a new sheet within an existing spreadsheet

SERVERVaultAssist SOURCE3xcaffeine/mcp-server

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/3xcaffeine-mcp-server/create-sheet.md

WHAT IT DOES

What create_sheet does on VaultAssist

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

RISK

Why create_sheet is rated Medium

This tool creates new sheets within a spreadsheet, which is a reversible write operation. It modifies data structure by adding new sheets but does not delete, execute code, or move financial resources. The severity is medium because misuse could create numerous sheets consuming quota or cluttering the workspace, but the action is reversible through deletion.

From the tool's definition Tool name 'create_sheet' and description 'Create a new sheet within an existing spreadsheet' indicate data creation and modification within Google Sheets.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs create_sheet safely

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

create_sheet Rate-limited

create_sheet 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_sheet": {
      "limits": [
        {
          "counter": "create_sheet_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 VaultAssist, apply this rule, and every create_sheet call is checked against it from then on.

FAQ

Questions about create_sheet

What does the create_sheet tool do? +

Create a new sheet within an existing spreadsheet. It is categorised as a Write tool in the VaultAssist 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_sheet? +

Register the VaultAssist MCP server in PolicyLayer and add a rule for create_sheet: 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 VaultAssist. Nothing to install.

What risk level is create_sheet? +

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

Can I rate-limit create_sheet? +

Yes. Add a rate_limit block to the create_sheet 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_sheet completely? +

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

create_sheet is provided by the VaultAssist MCP server (3xcaffeine/mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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