Create one or more levels in Revit at specified elevations. Levels define horizontal planes in the building and are used to host floor plans, ceilings, and other level-based elements. All elevation units are in millimeters (mm).
AI agents use create_level to create or update resources in Revit MCP — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Revit MCP environment.
This tool creates new persistent objects (levels) in a Revit model, which is a reversible write operation. While levels are structural elements important to the model, they can be deleted or modified after creation, distinguishing this from a Destructive action.
From the tool's definition Tool description states it will 'Create one or more levels in Revit at specified elevations.' The verb 'create' and the stated purpose of creating new building model elements clearly indicate data modification.
Documented attack patterns abuse exactly the kind of access create_level gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Revit MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for create_level:
{
"version": "1",
"default": "deny",
"tools": {
"create_level": {
"limits": [
{
"counter": "create_level_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}create_level 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.
Free to start. No card required.
Create one or more levels in Revit at specified elevations. Levels define horizontal planes in the building and are used to host floor plans, ceilings, and other level-based elements. All elevation units are in millimeters (mm). It is categorised as a Write tool in the Revit MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Revit MCP server in PolicyLayer and add a rule for create_level: 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. Nothing to install.
create_level is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the create_level 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.
Set action: deny in the PolicyLayer policy for create_level. 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.
create_level is provided by the Revit MCP server (mcp-servers-for-revit/revit-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Revit MCP, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
25 Revit MCP tools catalogued and risk-classified — across an index of 43,000+ MCP servers.