create_room

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-room.md

WHAT IT DOES

What create_room does on Revit MCP Server

AI agents use create_room 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_room is rated Medium

The tool creates a new room element in Revit, which is a reversible Write operation (rooms can be deleted or modified). It modifies the building model but does not delete data (would be Destructive) or execute arbitrary code (would be Execute). The lack of a detailed description reduces confidence slightly, but the name and server context are clear enough to categorize as Write.

From the tool's definition Tool name 'create_room' indicates creation of a new element within a Revit model. Given the server context of 'building design, editing, analysis' and sibling tools like 'create_detail_line', 'create_dimensions', 'create_duct', 'create_grid', and…

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs create_room 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_room, this is the rule to start with:

create_room Rate-limited

create_room 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_room": {
      "limits": [
        {
          "counter": "create_room_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_room call is checked against it from then on.

FAQ

Questions about create_room

What does the create_room tool do? +

create_room 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_room? +

Register the Revit MCP Server MCP server in PolicyLayer and add a rule for create_room: 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_room? +

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

Can I rate-limit create_room? +

Yes. Add a rate_limit block to the create_room 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_room completely? +

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

create_room 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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