create_grid

A write tool on the Revit MCP server.

SERVERRevit MCP Server SOURCEdemolinator/revit-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/demolinator-revit-mcp-server/create-grid.md

WHAT IT DOES

What create_grid does on Revit MCP Server

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

RISK

Why create_grid is rated Medium

The tool creates a new grid element in Revit, which is a write operation that modifies the building model. While grids can be deleted (reversible), the empty description reduces certainty. Based on naming convention consistency with sibling tools like 'create_detail_line', 'create_dimensions', 'create_duct', and 'create_level' which are all Write operations, this is classified as Write rather than Execute.

From the tool's definition Tool named 'create_grid' on a Revit modeling server; grid creation is a reversible modeling operation that adds geometry to the design.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs create_grid safely

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

create_grid Rate-limited

create_grid 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_grid": {
      "limits": [
        {
          "counter": "create_grid_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 Revit MCP Server, apply this rule, and every create_grid call is checked against it from then on.

FAQ

Questions about create_grid

What does the create_grid tool do? +

create_grid is a write tool on the Revit MCP Server MCP server. It is categorised as a Write tool in the Revit 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 create_grid? +

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

What risk level is create_grid? +

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

Can I rate-limit create_grid? +

Yes. Add a rate_limit block to the create_grid 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_grid completely? +

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

create_grid is provided by the Revit MCP Server MCP server (demolinator/revit-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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