Non-Orthogonal Timber Geometry
lukapiskorec/craftbot
Rules for modeling sloped, twisted and warped timber structures from straight members: ruled surfaces, per-bay framing, plane-cut legs and slab-exact clipping.
Creates a p5.js MicroSim where students read scenarios and sort them into the correct category.
Install Concept Classifier
$ npx skills add dmccreary/ibook-skills --skill concept-classifier -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install dmccreary/ibook-skills concept-classifier --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/dmccreary/ibook-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/archived/concept-classifier .claude/skills/concept-classifier && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "concept-classifier" agent skill from https://github.com/dmccreary/ibook-skills/tree/main/skills/archived/concept-classifier into .claude/skills/concept-classifier/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "concept-classifier", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/dmccreary/ibook-skills/tree/main/skills/archived/concept-classifierType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add dmccreary/ibook-skills --skill concept-classifier -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install dmccreary/ibook-skills concept-classifier --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/dmccreary/ibook-skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/archived/concept-classifier .agents/skills/concept-classifier && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "concept-classifier" agent skill from https://github.com/dmccreary/ibook-skills/tree/main/skills/archived/concept-classifier into .agents/skills/concept-classifier/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "concept-classifier", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add dmccreary/ibook-skills --skill concept-classifier -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install dmccreary/ibook-skills concept-classifier --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/dmccreary/ibook-skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/archived/concept-classifier .cursor/skills/concept-classifier && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "concept-classifier" agent skill from https://github.com/dmccreary/ibook-skills/tree/main/skills/archived/concept-classifier into .cursor/skills/concept-classifier/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "concept-classifier", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/dmccreary/ibook-skills.git --path skills/archived/concept-classifier--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add dmccreary/ibook-skills --skill concept-classifier -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install dmccreary/ibook-skills concept-classifier --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/dmccreary/ibook-skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/archived/concept-classifier .gemini/skills/concept-classifier && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "concept-classifier" agent skill from https://github.com/dmccreary/ibook-skills/tree/main/skills/archived/concept-classifier into .gemini/skills/concept-classifier/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "concept-classifier", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install dmccreary/ibook-skills concept-classifierInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add dmccreary/ibook-skills --skill concept-classifier -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/dmccreary/ibook-skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/archived/concept-classifier .github/skills/concept-classifier && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "concept-classifier" agent skill from https://github.com/dmccreary/ibook-skills/tree/main/skills/archived/concept-classifier into .github/skills/concept-classifier/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "concept-classifier", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add dmccreary/ibook-skills --skill concept-classifier -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install dmccreary/ibook-skills concept-classifier --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/dmccreary/ibook-skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/archived/concept-classifier .opencode/skills/concept-classifier && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "concept-classifier" agent skill from https://github.com/dmccreary/ibook-skills/tree/main/skills/archived/concept-classifier into .opencode/skills/concept-classifier/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "concept-classifier", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
concept-classifier- GitHub stars
- 105
- Token cost
- ~2.5k tokens
- SKILL.md length
- 841 words
- Files
- 5
- Skills in repo
- 32
- Repo updated
- First seen
- Licence
- CC-BY-NC-4.0
At a glance
Creates a p5.js MicroSim where students read scenarios and sort them into the correct category.
- Works in 8 steps: Cognitive Bias Quiz (Ethics/Psychology) → Logical Fallacy Identifier… → Literary Device Recognizer… → …
- Any subject where learners need to recognize patterns
- SKILL.md covers Overview, When to Use This Skill, Features and Data Structure, plus 11 more sections
- Runs JavaScript scripts from its folder; reaches dmccreary.github.io
What it does
Concept Classifier is an agent skill from dmccreary/ibook-skills. Creates a p5.js MicroSim where students read scenarios and sort them into the correct category. Use for any subject where learners need to recognize patterns, identify types, or categorize examples.
Its SKILL.md is about 2.5k tokens, which your agent loads only when the skill is triggered. The skill folder holds 5 other files (for example `templates/concept-classifier-template.js`, `templates/data-template.json` and `templates/index-template.md`).
It sits in Education, covering Generative and creative coding.
When your agent uses it
- Any subject where learners need to recognize patterns
- Categorize examples
Example prompts
- “Use the concept-classifier skill to create a p5.js MicroSim where students read scenarios and sort them into the correct category”
- “/concept-classifier”
Requirements
- Node.js
Workflow steps
8 steps, taken from the step headings in SKILL.md.
- Cognitive Bias Quiz (Ethics/Psychology)
- Logical Fallacy Identifier (Philosophy/Critical Thinking)
- Literary Device Recognizer (English/Literature)
- Chemical Reaction Classifier (Chemistry)
- Historical Era Matcher (History)
- Design Pattern Identifier (Computer Science)
- Musical Form Quiz (Music)
- Art Movement Classifier (Art History)
What it can do on your machine
Read from SKILL.md and the folder at commit 6789126. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Ships script files (JavaScript), which the agent can run.
From the folder's file list and the shell code blocks in SKILL.md.
Network
Hosts in commands or code, which the agent is likely to contact:
dmccreary.github.io
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Concept Classifier loads about 2.5k tokens when it runs. Until then it costs about 54 tokens; SKILL.md has 841 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
Its licence (CC-BY-NC-4.0) doesn't allow us to republish the file, so here is its outline and opening line. It has 841 words (~2,497 tokens).
“This skill creates interactive classification quiz MicroSims using p5.js. Students are presented with scenarios, examples, or descriptions and must classify them into the correct category from multiple choice options. The quiz format is ideal for teaching pattern recognition, concept identification…”
- name
- concept-classifier
- model
- sonnet
- license
- Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)
Files
SKILL.md and 4 other files in skills/archived/concept-classifier of dmccreary/ibook-skills.
- SKILL.md
- templates/concept-classifier-template.js
- templates/data-template.json
- templates/index-template.md
- templates/main-template.html
Open the folder on GitHubat commit 6789126
Compare with similar skills
Concept Classifier next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Concept Classifier this skilldmccreary/ibook-skills | 105 | — | ~2.5k | Automated safety check: Pass | CC-BY-NC-4.0 | |
| Non-Orthogonal Timber Geometrylukapiskorec/craftbot | 150 | — | ~1.2k | Automated safety check: Pass | Custom licence | |
| Algorithmic Art with p5.jsanthropics/skills | 180k | 38 repos | ~4.9k | Automated safety check: Pass | Apache-2.0 | |
| Canvas Designanthropics/skills | 180k | 52 repos | ~3k | Automated safety check: Pass | Apache-2.0 | |
| Image to Three.js Modelimg2threejs/img2threejs | 18k | 1 repos | ~8.2k | Automated safety check: Pass | Apache-2.0 | |
| Codebase to Coursezarazhangrui/codebase-to-course | 5.7k | — | ~4.4k | Automated safety check: Pass | None |
Similar skills
- Official
Algorithmic Art with p5.js
anthropics/skills
Creates original generative art in two steps: a written algorithmic philosophy, then a p5.js sketch with seeded randomness and an interactive viewer for exploring parameters.
- Official
Canvas Design
anthropics/skills
Creates original posters and static art as PNG or PDF by first writing a short design philosophy, then expressing it visually on a canvas.
Image to Three.js Model
img2threejs/img2threejs
Rebuilds the object in a reference image as a procedural, animation-ready Three.js model written entirely in code, using staged sculpting with quality checks.
Codebase to Course
zarazhangrui/codebase-to-course
Turns a codebase into an interactive single-page HTML course for non-technical learners, with scroll modules, animated diagrams, quizzes and plain-English code translations.
Photo Abstract Editorial
ZzzLc0405/photo-abstract-editorial
Creates one vertical editorial image from an uploaded photo, keeping the photo untouched and adding an abstract panel and short English title derived from it.
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Related
Categories
Questions about Concept Classifier
What does Concept Classifier do?
Creates a p5.js MicroSim where students read scenarios and sort them into the correct category. Concept Classifier is an agent skill from dmccreary/ibook-skills.js MicroSim where students read scenarios and sort them into the correct category.
When should I use Concept Classifier?
Concept Classifier fits situations like: any subject where learners need to recognize patterns; categorize examples.
How do I install Concept Classifier in Claude Code?
Run `npx skills add dmccreary/ibook-skills --skill concept-classifier -a claude-code`. Or copy the skill folder (skills/archived/concept-classifier in dmccreary/ibook-skills) into .claude/skills/concept-classifier in your project. Claude Code loads it when a task matches its description.
How do I install Concept Classifier in Codex?
Run `npx skills add dmccreary/ibook-skills --skill concept-classifier -a codex`. Or copy the skill folder (skills/archived/concept-classifier in dmccreary/ibook-skills) into .agents/skills/concept-classifier in your project. Codex loads it when a task matches its description.
Can I use Concept Classifier in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add dmccreary/ibook-skills --skill concept-classifier -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/concept-classifier, .gemini/skills/concept-classifier, .github/skills/concept-classifier and .opencode/skills/concept-classifier in your project.
What does Concept Classifier need to run?
Going by SKILL.md and its folder, Concept Classifier needs JavaScript for the scripts in its folder. Our summary lists: Node.js.
Does Concept Classifier access the network?
SKILL.md names 1 domain. In commands or code: dmccreary.github.io; the agent is likely to contact it when it follows the instructions. This is read from the text; nothing was executed.
Is Concept Classifier safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Concept Classifier use?
Concept Classifier is published under the CC-BY-NC-4.0 licence (declared in SKILL.md).
How many tokens does Concept Classifier use?
About 2.5k tokens (SKILL.md is roughly 10k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Concept Classifier?
Skills that share tags, products or a category with Concept Classifier: Non-Orthogonal Timber Geometry (lukapiskorec/craftbot, 150 stars), Algorithmic Art with p5.js (anthropics/skills, 180k stars), Canvas Design (anthropics/skills, 180k stars) and Image to Three.js Model (img2threejs/img2threejs, 18k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Concept Classifier?
dmccreary (a GitHub user) maintains it in dmccreary/ibook-skills, which has 105 GitHub stars. The repository holds 32 skills in this directory. The repository was last updated on October 7, 2026.
Source: dmccreary/ibook-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.