Browse skills

Use when opening, creating, writing, or serializing IFC files with IfcOpenShell. Prevents the common mistake of not using transactions for multi-step operations (no undo on failure). Covers ifcopenshell.open(), file.create(), file.write(), transaction management with undo/redo, and schema selection. Keywords: ifcopenshell.open, file.write, create file, IFC file, transaction, undo, redo, serialize, IFC I/O, file operations, open IFC file, save IFC, read IFC in Python.

Use when creating custom Blender operators -- bpy.types.Operator subclasses with execute, invoke, or modal methods. Prevents the common mistake of not implementing poll() (causing silent failures) or using wrong bl_idname format. Covers operator lifecycle, bl_options, return values, properties, and context.temp_override (4.0+ replacement for context override). Keywords: Operator, execute, invoke, modal, poll, bl_idname, bl_options, temp_override, REGISTER, UNDO, operator properties, bpy.ops, create custom operator, add button, operator CANCELLED.

Use when creating custom Blender UI panels, menus, or UIList elements. Prevents the common mistake of using wrong bl_space_type/bl_region_type combinations (panel won't show). Covers bpy.types.Panel, draw() method, UILayout API (row/column/box/split), bl_category, sub-panels, draw_header, menus, pie menus, and UIList. Keywords: Panel, UILayout, bl_space_type, bl_region_type, bl_category, draw, row, column, box, split, sub-panel, UIList, menu, Blender UI, create panel, add UI to sidebar, custom panel.

Use when adding custom properties to Blender objects -- BoolProperty, IntProperty, FloatProperty, EnumProperty, PointerProperty, or PropertyGroup. Prevents the common mistake of not using update callbacks (changes not reflected in UI) or returning stale items from dynamic EnumProperty. Covers all bpy.props types, subtypes, units, getters/ setters, and CollectionProperty patterns. Keywords: bpy.props, PropertyGroup, BoolProperty, IntProperty, FloatProperty, EnumProperty, PointerProperty, CollectionProperty, update callback, dynamic enum, add custom property, user input, settings.

Use when configuring render settings or automating renders in Blender Python. Prevents the version pitfall of using 'BLENDER_EEVEE' (renamed to 'BLENDER_EEVEE_NEXT' in 4.2). Covers render engine selection (EEVEE/Cycles/Workbench), output format setup, camera configuration, batch rendering, and scene.render.* settings. Keywords: render, EEVEE, Cycles, Workbench, render settings, output format, camera, batch render, scene.render, BLENDER_EEVEE_NEXT, resolution, render from script, set render resolution, save image.

Use when validating, auditing, or verifying IFC model quality in Bonsai projects. Provides systematic checks for spatial hierarchy completeness, property set compliance, geometry validity, classification correctness, and IDS (Information Delivery Specification) conformance using ifctester. Prevents shipping models with missing spatial containment or incomplete property sets. Keywords: IFC validation, audit, quality check, spatial hierarchy, property set, IDS, ifctester, model quality, Bonsai validation, compliance, check my IFC file, is my model correct, find errors.

Use when developing Bonsai (formerly BlenderBIM) extensions, scripting BIM workflows in Blender, or understanding the Bonsai addon architecture. Prevents the common mistake of using ifcopenshell.open() to access the model instead of tool.Ifc.get() which gives the live Bonsai IFC file. Covers native IFC workflow, bpy.ops.bim.* operators, BIM property panels, and the relationship between Blender objects and IFC entities. Keywords: Bonsai, BlenderBIM, tool.Ifc.get(), bpy.ops.bim, native IFC, addon architecture, IFC-backed properties, BIM authoring, how does Bonsai work, Bonsai internals, Bonsai API.

Use when debugging Bonsai errors -- IFC schema violations, spatial hierarchy errors, property set failures, geometry representation issues, or operator poll failures. Prevents wasting time on symptoms instead of root causes (e.g., missing IfcOwnerHistory in IFC2X3 causing cryptic errors). Provides diagnostic decision trees and recovery strategies for all common Bonsai failure modes. Keywords: Bonsai error, schema violation, spatial hierarchy error, poll failure, drawing error, BCF error, IFC error, troubleshooting, debug, Bonsai not working, Bonsai crashes, element not showing.

Use when working with BIM Collaboration Format (BCF) files in Bonsai -- creating topics, adding viewpoints, managing comments, or importing/exporting BCF files (v2.1 and v3.0). Prevents the common mistake of creating viewpoints without proper camera snapshots or missing element references. Covers BCF issue tracking integration with IFC elements. Keywords: BCF, BIM Collaboration Format, viewpoint, topic, comment, clash report, issue tracking, BCF v2.1, BCF v3.0, collaboration, share issues, report problem in model, BIM issue.

Use when performing clash detection, interference checking, or spatial coordination in BIM models using Bonsai and IfcClash. Prevents the common mistake of running clash detection without proper element group filters (testing everything against everything). Covers clash set definition, element filtering, smart grouping of results, and BCF integration for issue tracking. Keywords: clash detection, IfcClash, interference, collision, spatial coordination, clash set, element filter, BCF integration, clash report, find collisions, elements overlap, pipes through walls.

Use when classifying IFC elements in Bonsai with systems like Uniclass 2015, OmniClass, NL-SfB, or CCI. Prevents the common mistake of assigning classifications without importing the classification library first. Covers bSDD integration, IfcClassificationReference assignment, bulk classification operations, and cross-referencing between systems. Keywords: classification, Uniclass, OmniClass, NL-SfB, CCI, bSDD, IfcClassificationReference, bulk classification, classification library, classify elements, tag elements, assign class code.

Use when generating 2D drawings from IFC models in Bonsai -- plans, sections, elevations, annotations, or sheet layouts. Prevents the common mistake of creating views without proper drawing style configuration (getting empty or unfiltered output). Covers the complete documentation pipeline from model views through annotations to printable SVG sheet output. Keywords: drawing, plan, section, elevation, annotation, sheet, SVG, titleblock, documentation, 2D drawing, Bonsai drawing, create floor plan, generate section view, print drawings.

Use when placing building elements (walls, slabs, columns, beams) in Bonsai or assigning IFC types and materials. Prevents the common mistake of creating geometry without assigning it to the spatial hierarchy (orphaned elements). Covers the complete element creation pipeline: type selection, geometric representation, material layer/profile/constituent assignment, and spatial containment. Keywords: wall, slab, column, beam, IfcWall, IfcSlab, IFC type, predefined type, material layer, material profile, spatial assignment, BIM modeling, make a wall, create building elements, add floor.

Use when creating, opening, or configuring Bonsai IFC projects -- schema selection (IFC2X3/IFC4/IFC4X3), unit configuration, georeference setup, or project templates. Prevents the common mistake of not setting units before creating geometry (defaulting to incorrect units). Covers the complete project lifecycle from creation to delivery. Keywords: IFC project, schema selection, IFC2X3, IFC4, IFC4X3, units, georeference, coordinate reference system, project template, Bonsai project, CRS, EPSG, WGS84, map coordinates, start new project.

Use when calculating quantities from IFC elements in Bonsai -- area, length, volume, weight, or custom quantity sets. Prevents the common mistake of manually computing quantities instead of using QtoCalculator for automated base quantity extraction from geometry. Covers IfcElementQuantity sets, bulk quantity operations, and the complete QTO pipeline from geometry analysis to export. Keywords: quantity takeoff, QTO, IfcElementQuantity, area, volume, length, weight, QtoCalculator, base quantities, cost estimation, calculate area, how much material, measure building.

Use when accessing IFC elements from Blender objects in Bonsai -- getting the IFC entity behind a selected object, or finding which Blender object represents an IFC element. Prevents the common mistake of using ifcopenshell.open() instead of tool.Ifc.get() to access the live Bonsai file. Covers element-to-object mapping, IfcStore retrieval, and the Bonsai data bridge between bpy.types.Object and IFC entities. Keywords: tool.Ifc.get(), IfcStore, element mapping, Blender object to IFC, IFC entity, selected element, data bridge, Bonsai elements, get IFC from selected, which element is this.

Use when creating or editing IFC geometry representations in Bonsai -- profile extrusions, boolean operations, mesh-to-IFC conversion, or geometry context setup. Prevents the common mistake of creating geometry without specifying the representation context (Body/Axis/ FootPrint). Covers IfcExtrudedAreaSolid, IfcShapeRepresentation, and the relationship between Blender mesh data and IFC geometric representations. Keywords: IFC geometry, extrusion, IfcExtrudedAreaSolid, IfcShapeRepresentation, boolean, geometry context, Body, Axis, mesh to IFC, profile, create 3D shape in IFC, geometry not showing.

Use when creating, reading, or editing IFC property sets (Pset) and quantity sets (Qto) in Bonsai. Prevents the common mistake of creating property sets without associating them to elements via IfcRelDefinesByProperties. Covers IfcPropertySingleValue, IfcPropertyEnumeratedValue, IfcQuantityArea/Length/Volume, predefined pset templates, and bulk property management. Keywords: property set, Pset, Qto, IfcPropertySingleValue, IfcPropertyEnumeratedValue, IfcRelDefinesByProperties, custom properties, bulk property, pset template, add property, read pset values.

Use when writing or improving README files. Not all READMEs are the same — provides templates and guidance matched to your audience and project type.

Audit screens against Nielsen's heuristics and mobile UX best practices using the StyleSeed Toss design language as the implementation context.