edulab

edulab is a skill for Claude Code, Codex from renky1025/agent-skills. It costs 206 tokens per session (2,642 once invoked), scanned A, original, MIT.

A Chinese-language mathematics tool that creates interactive 3D explanations for solid-geometry problems and adjustable 2D graphs for functions. The result is a single HTML file that can be opened in a browser.

In plain words
What is it for?
Use it for Chinese secondary-school geometry problems, vector-based solutions, symbolic checks, and interactive graphs of common or custom functions.
Why use it?
It turns difficult calculations and changing formulas into visual demonstrations, including sliders for exploring how parameters affect a graph.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: reads .claude/ paths.

Good fit Use it for Chinese secondary-school geometry problems, vector-based solutions, symbolic checks, and interactive graphs of common or custom functions.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/renky1025/agent-skills/edulab
Install

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.

Any agent
npx skills add renky1025/agent-skills --skill edulab
Clone the repo
git clone --depth 1 https://github.com/renky1025/agent-skills

Made for: Claude Code, Codex.

Wrote 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.

agentmods badge for edulab

README.md
[![agentmods](https://agentmods.dev/badge/skills/renky1025/agent-skills/edulab/github.svg)](https://agentmods.dev/skills/renky1025/agent-skills/edulab)
Your own site
<a href="https://agentmods.dev/skills/renky1025/agent-skills/edulab"><img src="https://agentmods.dev/badge/skills/renky1025/agent-skills/edulab/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.

agentmods 80×15 button for edulab

Your own site · 80×15
<a href="https://agentmods.dev/skills/renky1025/agent-skills/edulab"><img src="https://agentmods.dev/badge/skills/renky1025/agent-skills/edulab.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 206 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,642 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00206 $0.02642
Opus 5.5 $0.00082 $0.01057
Sonnet 5.5 $0.00041 $0.00528
Haiku 4.5 $0.00021 $0.00264

Measured 1mo ago against content hash 0103ca498253, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

edulab 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.

The scan reads SKILL.md. This mod also ships 10 executable files (assets/vendor/CSS2DRenderer.js, assets/vendor/OrbitControls.js, assets/vendor/three.min.js, …), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

edulab/SKILL.md · 143 lines

How it starts

The opening of the file, as written. The whole thing — 143 lines — stays where its author put it; the contents beside it link to each section on GitHub.

edulab

Purpose

中高考数学可视化:把中文立体几何题或函数表达式,变成单文件、可离线打开、可交互的 HTML 演示。几何走"读题 -> spec JSON -> 建系向量法求解(sympy 校验)-> Three.js 场景";函数走"函数族 + 参数 -> Canvas2D 绘图 + 参数滑块实时联动"。

When to Use

  • 用户给出立体几何题(中高考风格),需要 3D 演示解题过程。
  • 用户想要函数图像,并希望调参看变化(滑块联动)。
  • 用户需要离线可开的数学可视化教学素材。
  • 触发词:/edulab <题目或函数>、立体几何、空间几何题、线面角、二面角、外接球、内切球、三视图、函数图像、数学可视化。

When NOT to Use

  • 用户要的是概念讲解而非数学演示 -> 交给 teach-eli5(可视化教学页)。
  • 用户要设计课程或教案 -> 交给 curriculum-design。
  • 用户要信息卡片、封面等设计产物 -> 交给 infocard / mckinsey-cover。
  • 题目超出 13 种 query.type 覆盖范围 -> 先说明不支持,不要硬套近似题型交付。

Workflow

路径约定:下文 <skill> 指本技能安装目录(如 ~/.claude/skills/edulab)。运行脚本前先 cd 到该目录,或替换为实际路径。Python 需装 sympy(建议 python3 -m venv .venv && .venv/bin/pip install sympy)。

几何模块

  1. 读题,确定立体类型与参数,写入 spec JSON(契约见 references/schema.md;题型清单见 references/taxonomy.md)。
  2. 求解:
    cd <skill>/scripts/geometry
    python3 geometry_solver.py <spec.json> <scene.json>
    
    检查 steps 与 result 是否与标准答案一致;不一致则修 spec 重跑,不得静默交付错误答案。
  3. 生成 HTML(--offline 内联 Three.js,无网环境可打开):
    python3 build_html.py <scene.json> <out.html> [--offline]
    
  4. 用 present_files 打开 out.html。

函数模块

  1. 确定函数族(quadratic / linear / inverse / trig / exp / log / power,或 custom 自由表达式、multi 多曲线对比)。
  2. 生成 scene:
    cd <skill>/scripts/function
    python3 function_engine.py <family> <params.json> <scene.json>
    
  3. python3 build_html.py <scene.json> <out.html>,然后用 present_files 打开。

完整命令配方见 examples/quickstart.md。

Decision Rules

  • 输入是立体几何题 -> 几何模块;输入是函数/表达式/参数 -> 函数模块;两者混合 -> 拆成两个产物分别生成。
  • query.type 支持 13 种:line_plane_angle / line_line_angle / dihedral_angle / point_plane_distance / volume_tetra / parallel_perp / skew_distance / circumsphere / insphere / three_views / surface_shortest_path / net / surface_volume。
  • 立体支持 8 种:cube / cuboid / tetra / prism3 / pyramid4 / cylinder / cone / sphere。
  • 自定义表达式(custom)-> params 传 {"expr": "sin(x)/x"},只走 safe_expr.py,非法输入直接拒绝。
  • 多曲线对比(multi)-> params 传 {"items": [{"expr":..., "label":...}]}。
  • 需要 JSON 契约字段 -> 读 references/schema.md。
  • 需要确认某题型/函数族/立体是否支持 -> 读 references/taxonomy.md。
  • 需要架构决策、阶段规划或已知边界 -> 读 references/design.md。
  • 无网环境 -> 必须加 --offline,否则 CDN 版打不开。

Read the full file on GitHub · 143 lines

Files

What ships with it

33 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.

Changes

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.

  1. 1mo ago Changed · +87 lines · +130 tokens per session 0103ca498253
  2. 1mo ago First seen · 56 lines · 76 tokens per session scan A cc554aff836c

Subscribe to this mod's changes

edulab is a skill published in the GitHub repository renky1025/agent-skills (11 stars, last pushed 15d ago), licensed MIT. It adds 206 tokens to every session and 2,642 once invoked, about $0.0008 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 2026-08-31.