Borrowing it
Nothing to install: this file belongs to Impertio-Studio/Three.js-Claude-Skill-Package. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/Impertio-Studio/Three.js-Claude-Skill-Package/master/CLAUDE.mdgit 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/instructions/impertio-studio/three.js-claude-skill-package/claude-md)<a href="https://agentmods.dev/instructions/impertio-studio/three.js-claude-skill-package/claude-md"><img src="https://agentmods.dev/badge/instructions/impertio-studio/three.js-claude-skill-package/claude-md.svg" alt="Measured on agentmods" 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 | $0.02822 | $0.02822 |
| Opus 5 | $0.01411 | $0.01411 |
| Sonnet 5 | $0.00564 | $0.00564 |
| Haiku 4.5 | $0.00282 | $0.00282 |
Grade A, and why
Three.js-Claude-Skill-Package CLAUDE.md 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 8d 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 — 254 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Three.js Skill Package — CLAUDE.md
Master configuration for the Three.js Claude Code Skill Package. This file is automatically loaded by Claude Code at session start.
Standing Orders — READ THIS FIRST
Mission: Build a complete, production-ready skill package for Three.js and publish it under the OpenAEC Foundation on GitHub. This is your standing order for every session in this workspace.
How: Follow the 7-phase research-first methodology. Delegate ALL execution to agents. You are the ARCHITECT — you think, plan, validate, and delegate. Agents do the actual work.
What you do on session start:
- Read ROADMAP.md → determine current phase and next steps
- Read all core files (LESSONS.md, DECISIONS.md, REQUIREMENTS.md, SOURCES.md)
- Continue where the previous session left off
- If Phase 1 is incomplete → create the raw masterplan first
- If Phase 2+ → follow the methodology, delegating in batches of 3 agents
Quality bar: Every skill must be deterministic (ALWAYS/NEVER language), English-only, <500 lines, verified against official docs via WebFetch. No hallucinated APIs. No vague language.
End state: A published GitHub repo at https://github.com/OpenAEC-Foundation/Three.js-Claude-Skill-Package with:
- All skills created, validated, and organized
- INDEX.md with complete skill catalog
- README.md with installation instructions and skill table
- Social preview banner (1280x640px) with OpenAEC branding
- Release tag (v1.0.0) and GitHub release
- Repository topics set (claude, skills, threejs, 3d, webgl, webgpu, ai, deterministic, openaec)
Reflection checkpoint: After EVERY phase/batch, pause and ask: Do we need more research? Should we revise the plan? Are we meeting quality standards? Update core files before proceeding.
Consolidate lessons: Any workflow-level insight (not tech-specific) should also be noted for consolidation back to the Workflow Template repo (C:\Users\Freek Heijting\Documents\GitHub\Skill-Package-Workflow-Template).
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.
- 8d ago First seen · 254 lines · 2,822 tokens per session scan A f8b121ea5f39
Three.js-Claude-Skill-Package CLAUDE.md is an instructions file published in the GitHub repository Impertio-Studio/Three.js-Claude-Skill-Package (12 stars, last pushed 2mo ago), licensed MIT. It adds 2,822 tokens to every session, about $0.0141 per session on Opus 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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