Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add Impertio-Studio/Three.js-Claude-Skill-Package --skill threejs-impl-ifc-viewergit clone --depth 1 https://github.com/Impertio-Studio/Three.js-Claude-Skill-PackageWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/impertio-studio/three.js-claude-skill-package/threejs-impl-ifc-viewer)<a href="https://agentmods.dev/skills/impertio-studio/three.js-claude-skill-package/threejs-impl-ifc-viewer"><img src="https://agentmods.dev/badge/skills/impertio-studio/three.js-claude-skill-package/threejs-impl-ifc-viewer/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/impertio-studio/three.js-claude-skill-package/threejs-impl-ifc-viewer"><img src="https://agentmods.dev/badge/skills/impertio-studio/three.js-claude-skill-package/threejs-impl-ifc-viewer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00127 | $0.03447 |
| Opus 5.5 | $0.00051 | $0.01379 |
| Sonnet 5.5 | $0.00025 | $0.00689 |
| Haiku 4.5 | $0.00013 | $0.00345 |
Grade A, and why
threejs-impl-ifc-viewer scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 339 lines — stays where its author put it; the contents beside it link to each section on GitHub.
threejs-impl-ifc-viewer
Quick Reference
Library Comparison
| Library | License | Level | Status | Use Case |
|---|---|---|---|---|
web-ifc |
MIT | Low-level WASM parser | Active (v0.77+) | Custom pipelines, full control |
@thatopen/components |
MIT (v3.x) | High-level BIM toolkit | Active (v3.3.2+) | Full BIM viewers, rapid prototyping |
@thatopen/components-front |
MIT | Browser-specific extensions | Active | UI, advanced visualization |
web-ifc-three |
— | Deprecated bridge | DEAD | NEVER use |
openbim-components (v1) |
— | Deprecated toolkit | DEAD | NEVER use |
Package Installation
# Low-level approach (MIT, full control)
npm install web-ifc three
# High-level approach (MIT, batteries-included)
npm install @thatopen/components @thatopen/components-front web-ifc three
Critical Warnings
LICENSE HISTORY WARNING: The @thatopen packages (v3.x) are licensed under MIT. However, older IFC.js ecosystem packages (openbim-components v1, IFC.js v0.x) used AGPL-3.0. ALWAYS verify the license of the exact package version you install. If using any package with AGPL-3.0, your entire application MUST be open-sourced under AGPL-3.0 or a compatible license.
NEVER use web-ifc-three -- it is deprecated and unmaintained. Use web-ifc directly or @thatopen/components instead.
NEVER use openbim-components (v1) -- it is deprecated. Use @thatopen/components (v3.x) instead.
NEVER load entire IFC geometry at once for files >50MB -- ALWAYS stream or load geometry on demand. WASM memory is limited and cannot be reclaimed without page reload.
NEVER forget to call ifcApi.CloseModel(modelID) after processing -- WASM memory leaks are permanent until page reload.
ALWAYS call components.dispose() when unmounting a @thatopen viewer -- failure to do so leaks GPU memory, Three.js objects, and event listeners.
ALWAYS initialize IfcAPI asynchronously -- await ifcApi.Init() MUST complete before any model operations.
What ships with it
4 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 1mo ago First seen · 339 lines · 127 tokens per session scan A a9d346e63860
threejs-impl-ifc-viewer is a skill published in the GitHub repository Impertio-Studio/Three.js-Claude-Skill-Package (23 stars, last pushed 3mo ago), licensed MIT. It adds 127 tokens to every session and 3,447 once invoked, about $0.0005 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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