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ifc-mcp

by WolfzTech
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Python
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IFC MCP Server

An MCP (Model Context Protocol) server that enables AI agents to understand and query IFC (Industry Foundation Classes) building model files. This server exposes a rich set of tools for loading IFC files, traversing spatial hierarchies, inspecting elements and properties, querying materials and quantities, and retrieving geometry bounding boxes — allowing AI assistants like Claude to reason about building information models without requiring the user to manually extract data.

Installation

From PyPI (recommended)

pip install ifc-mcp
# or with uv:
uv tool install ifc-mcp

Claude Desktop config (no path needed):

{
  "mcpServers": {
    "ifc": {
      "command": "uvx",
      "args": ["ifc-mcp"]
    }
  }
}

To update

uv tool upgrade ifc-mcp

Or pin to a specific version:

"args": ["ifc-mcp==0.2.0"]

Skip permission prompts (Claude Code)

Add the tools to your ~/.claude/settings.json so Claude Code never asks for confirmation:

{
  "permissions": {
    "allow": [
      "mcp__ifc__load_ifc_file",
      "mcp__ifc__list_loaded_models",
      "mcp__ifc__unload_ifc_file",
      "mcp__ifc__get_spatial_structure",
      "mcp__ifc__get_element_containment",
      "mcp__ifc__get_elements_by_type",
      "mcp__ifc__get_element_by_id",
      "mcp__ifc__search_elements",
      "mcp__ifc__get_property_sets",
      "mcp__ifc__get_quantities",
      "mcp__ifc__get_material",
      "mcp__ifc__get_model_statistics",
      "mcp__ifc__get_bounding_box",
      "mcp__ifc__get_element_placement",
      "mcp__ifc__get_element_local_bbox",
      "mcp__ifc__get_element_body_mapping",
      "mcp__ifc__get_property_sets_detail",
      "mcp__ifc__get_element_by_label",
      "mcp__ifc__get_representation",
      "mcp__ifc__get_elements_batch"
    ]
  }
}

Related MCP server: OpenStudio MCP Server

Development Setup

Prerequisites: Python 3.11+, uv

git clone <repo>
cd IfcMcp
uv sync
uv run pytest                            # verify all tests pass

Claude Desktop config for local dev:

{
  "mcpServers": {
    "ifc": {
      "command": "uv",
      "args": ["run", "python", "server.py"],
      "cwd": "/absolute/path/to/IfcMcp"
    }
  }
}

On Windows, use double backslashes: "cwd": "C:\\Users\\...\\IfcMcp"

Tools Reference

Every tool (except list_loaded_models) requires a model_id — the value returned by load_ifc_file.

Tool

Parameters

Description

load_ifc_file

path

Load an IFC file; returns model_id

list_loaded_models

—

List all models in memory

unload_ifc_file

model_id

Free a loaded model

get_spatial_structure

model_id

Full spatial hierarchy (Project→Site→Building→Storey→Space)

get_element_containment

model_id, global_id

Full containment chain up to Site

get_elements_by_type

model_id, ifc_type, limit, offset

Paginated list by IFC type

get_element_by_id

model_id, global_id

Full element details (includes entity_label, type_global_id)

get_element_by_label

model_id, entity_label

Look up element by integer STEP label (#NNN)

get_elements_batch

model_id, global_ids, include

Batch query; include: entity_label, placement, property_sets, local_bbox

search_elements

model_id, filters..., limit, offset

Filter elements by type/name/pset/property

get_property_sets

model_id, global_id

All Psets for an element

get_property_sets_detail

model_id, global_id

Psets split by instance-level vs type-level

get_quantities

model_id, global_id

All quantity sets for an element

get_material

model_id, global_id

Material info (name, layers, category)

get_model_statistics

model_id

Element counts by type, storey names, schema

get_bounding_box

model_id, global_id

Min/max XYZ bounding box in world coordinates

get_element_placement

model_id, global_id

object_placement + world_transform + determinant + body mapping flag

get_element_local_bbox

model_id, global_id

Bounding box in element's local coordinate frame

get_element_body_mapping

model_id, global_id

Body mapping matrix, world transform, mirroring detection

get_representation

model_id, global_id

Representation structure without tessellating geometry

MCP Resource

Each loaded model exposes a pre-computed summary resource:

ifc://model/{model_id}/summary

This resource is computed at load time and contains the project name, IFC schema version, element counts by type, and storey names. It gives AI agents a fast overview of a model without issuing individual tool calls.

Error Responses

All tools return structured error objects. Common codes:

{"error": "element_not_found", "details": "..."}
{"error": "model_not_loaded", "details": "..."}
{"error": "geometry_unavailable", "details": "..."}
{"error": "file_not_found", "details": "..."}
{"error": "load_failed", "details": "..."}
{"error": "query_failed", "details": "..."}

This server cannot be installed

A
license - permissive license
-
quality - not tested
B
maintenance

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Maintenance

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