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Demolinator

Revit MCP Server

by Demolinator

create_structural_framing

Create structural beams and framing elements by defining start and end points, level, and beam type. Supports batch creation for multiple elements at once.

Instructions

Create structural beams and framing elements in Revit.

Beams are placed along a line between two points at a specified level. All dimensions in millimeters. Supports batch creation.

Args: elements: List of beam definitions, each with: - start_point (dict): {"x": float, "y": float, "z": float} in mm (required) - end_point (dict): {"x": float, "y": float, "z": float} in mm (required) - type_name (str): Beam family type name (optional) - level_name (str): Target level name (optional) - name (str): Description for reference (optional) ctx: MCP context for logging

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
elementsYes
Behavior3/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations are provided, so the description carries full burden. It discloses that it creates elements, uses millimeters, and supports batch creation, but it does not mention side effects (e.g., overwriting existing elements), permissions, limits, or error handling. This provides moderate transparency but lacks depth.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is concise, with a brief overview followed by a parameter list. Each sentence adds value, but the parameter list could be more compact. It is well-structured and easy to parse.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

The description explains the basic usage and input structure, but it lacks information about return values (output), error conditions, validation rules, or limitations. Given the complexity (nested objects, no output schema), more details on behavior and outcomes would improve completeness.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The input schema is sparse with only an array of objects and no parameter descriptions. The description compensates by detailing each sub-parameter (start_point, end_point, type_name, etc.) with types and optionality, adding significant meaning. However, it could be more precise about the dict structure or coordinate units (mm already noted).

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states it creates structural beams and framing elements in Revit, specifying they are placed along a line between two points. This distinguishes it from sibling creation tools like create_detail_line or create_grid, which serve different purposes.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description implies usage for creating beams and framing elements, and mentions batch creation, but it does not explicitly state when to use this tool over alternatives like create_line_based_element or other structural tools. No exclusions or context for when not to use it.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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