create_line_based_element

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-line-based-element.md

WHAT IT DOES

What create_line_based_element does on Revit MCP Server

AI agents use create_line_based_element 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_line_based_element is rated Medium

This tool creates new elements in a Revit model (architecture/design data). Creation is reversible (can be deleted), so it is Write rather than Destructive. Severity is high because uncontrolled element creation could corrupt a design model, introduce errors, or require significant manual cleanup.

From the tool's definition Tool name 'create_line_based_element' indicates creation of design elements in Revit; sibling tools like 'create_detail_line', 'create_dimensions', 'create_duct', 'create_grid', 'create_level' all create persistent design geometry.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs create_line_based_element 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_line_based_element, this is the rule to start with:

create_line_based_element Rate-limited

create_line_based_element 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_line_based_element": {
      "limits": [
        {
          "counter": "create_line_based_element_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_line_based_element call is checked against it from then on.

FAQ

Questions about create_line_based_element

What does the create_line_based_element tool do? +

create_line_based_element 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_line_based_element? +

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

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

Can I rate-limit create_line_based_element? +

Yes. Add a rate_limit block to the create_line_based_element 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_line_based_element completely? +

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

create_line_based_element 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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