Browse skills

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 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 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 the user asks to run Gemini CLI for code review, plan review, or big context (>200k) processing. Ideal for comprehensive analysis requiring large context windows. Uses Gemini 3 Pro by default for state-of-the-art reasoning and coding.

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.

/em:hard-call — Framework for decisions with no good options. Use when every option is painful and a structured 10/10/10 + regret-minimization pass is needed — e.g. choosing between a layoff and a down round, or killing a beloved product line.

Version 2.35.0 | PRD to Production | Zero Human Intervention > Research-enhanced: OpenAI SDK, DeepMind, Anthropic, AWS Bedrock, Agent SDK, HN Production (2025)

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 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.

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

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

Test and debug APIs with Hoppscotch. Use when a user asks to test API endpoints, debug REST/GraphQL/WebSocket APIs, create API collections, or find a Postman alternative that's open-source.

Use when creating or managing IFC spatial hierarchy in Bonsai -- IfcSite, IfcBuilding, IfcBuildingStorey, IfcSpace, and their containment relationships. Prevents the critical mistake of not establishing proper spatial decomposition (IfcRelAggregates) causing elements to be invisible in model viewers. Covers spatial containment, decomposition, and Bonsai-specific spatial navigation tools. Keywords: spatial structure, IfcSite, IfcBuilding, IfcBuildingStorey, IfcSpace, IfcRelContainedInSpatialStructure, IfcRelAggregates, spatial hierarchy, add storey, create building structure.

Use when debugging IfcOpenShell crashes, entity reference errors, or performance issues. Prevents the common pitfall of comparing entities with == instead of checking .id() or identity, or holding references to entities after removal. Covers C++ binding behavior, entity invalidation, by_type() return semantics, thread safety, memory management, PascalCase attributes, and installation patterns. Keywords: IfcOpenShell runtime, C++ binding, entity invalidation, by_type, thread safety, memory management, PascalCase, installation, entity identity, install IfcOpenShell, pip install ifcopenshell.

Use when learning IFC data model fundamentals or navigating IFC entity relationships. Prevents the common mistake of creating flat element structures without proper spatial hierarchy (Project > Site > Building > Storey). Covers entity hierarchy from IfcRoot to IfcElement, spatial structure, ownership model, placement system, representation system, and relationships across IFC2X3, IFC4, and IFC4X3 schemas. Keywords: IFC data model, entity hierarchy, spatial structure, IfcRoot, IfcElement, IfcProject, placement, representation, IFC schema, BIM fundamentals, what is IFC, IFC for beginners.

Use when debugging IfcOpenShell errors -- RuntimeError on invalid entities, AttributeError from wrong PascalCase, TypeError from wrong parameter types, or entity invalidation after removal. Prevents wasting time on symptoms by providing a diagnostic decision tree for common error patterns. Covers error messages, root causes, and recovery strategies. Keywords: RuntimeError, AttributeError, TypeError, invalid entity, PascalCase error, entity removed, IfcOpenShell error, debugging, exception handling, script throws error, wrong attribute name.

Use when processing large IFC files (100MB+) or optimizing slow IfcOpenShell scripts. Prevents the #1 performance mistake: calling create_shape() per element instead of using the geometry iterator for batch processing. Covers geometry iterator, by_type caching, batch patterns, memory management, multiprocessing strategies, and profiling. Keywords: performance, large IFC, geometry iterator, create_shape, batch processing, memory, multiprocessing, optimization, slow, 100MB, profiling, IFC file too large, takes too long, out of memory.