Study Companion En
mingchen666/Reviva
General study companion for learning, review, exam prep, exam-point analysis, syllabus/exam-outline interpretation, finals speedrun teaching, concept explanation, problem solving, homework coaching…
A skill your agent uses when drafting a mathematical concept explanation for the "Proving Nothing" book — produces book-ready, dependency-aware, multimodal (Sage + manim), fact-checked material…
Install Math Explainer
$ npx skills add CharlesHoskinson/sevenlayer --skill math-explainer -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install CharlesHoskinson/sevenlayer math-explainer --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/CharlesHoskinson/sevenlayer.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/math-explainer .claude/skills/math-explainer && 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 "math-explainer" agent skill from https://github.com/CharlesHoskinson/sevenlayer/tree/main/.claude/skills/math-explainer into .claude/skills/math-explainer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "math-explainer", 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/CharlesHoskinson/sevenlayer/tree/main/.claude/skills/math-explainerType 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 CharlesHoskinson/sevenlayer --skill math-explainer -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install CharlesHoskinson/sevenlayer math-explainer --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/CharlesHoskinson/sevenlayer.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.claude/skills/math-explainer .agents/skills/math-explainer && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "math-explainer" agent skill from https://github.com/CharlesHoskinson/sevenlayer/tree/main/.claude/skills/math-explainer into .agents/skills/math-explainer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "math-explainer", 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 CharlesHoskinson/sevenlayer --skill math-explainer -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install CharlesHoskinson/sevenlayer math-explainer --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/CharlesHoskinson/sevenlayer.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.claude/skills/math-explainer .cursor/skills/math-explainer && 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 "math-explainer" agent skill from https://github.com/CharlesHoskinson/sevenlayer/tree/main/.claude/skills/math-explainer into .cursor/skills/math-explainer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "math-explainer", 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/CharlesHoskinson/sevenlayer.git --path .claude/skills/math-explainer--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 CharlesHoskinson/sevenlayer --skill math-explainer -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install CharlesHoskinson/sevenlayer math-explainer --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/CharlesHoskinson/sevenlayer.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.claude/skills/math-explainer .gemini/skills/math-explainer && 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 "math-explainer" agent skill from https://github.com/CharlesHoskinson/sevenlayer/tree/main/.claude/skills/math-explainer into .gemini/skills/math-explainer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "math-explainer", 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 CharlesHoskinson/sevenlayer math-explainerInstalls 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 CharlesHoskinson/sevenlayer --skill math-explainer -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/CharlesHoskinson/sevenlayer.git skills-src && mkdir -p .github/skills && cp -r skills-src/.claude/skills/math-explainer .github/skills/math-explainer && 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 "math-explainer" agent skill from https://github.com/CharlesHoskinson/sevenlayer/tree/main/.claude/skills/math-explainer into .github/skills/math-explainer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "math-explainer", 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 CharlesHoskinson/sevenlayer --skill math-explainer -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install CharlesHoskinson/sevenlayer math-explainer --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/CharlesHoskinson/sevenlayer.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.claude/skills/math-explainer .opencode/skills/math-explainer && 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 "math-explainer" agent skill from https://github.com/CharlesHoskinson/sevenlayer/tree/main/.claude/skills/math-explainer into .opencode/skills/math-explainer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "math-explainer", 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
math-explainer- GitHub stars
- 116
- Token cost
- ~805 tokens
- SKILL.md length
- 315 words
- Files
- 67 (incl. scripts, references)
- Skills in repo
- 3
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
A skill your agent uses when drafting a mathematical concept explanation for the "Proving Nothing" book — produces book-ready, dependency-aware, multimodal (Sage + manim), fact-checked material…
- Drafting a mathematical concept explanation for the Proving Nothing book — produces book-ready
- SKILL.md covers The pipeline, Method rubric (enforced by the… and Dependencies
- Runs Python scripts from its folder
- Dependency-aware
What it does
Math Explainer is an agent skill from CharlesHoskinson/sevenlayer. Use when drafting a mathematical concept explanation for the "Proving Nothing" book — produces book-ready, dependency-aware, multimodal (Sage + manim), fact-checked material executing the Sanderson + Tao teaching method via a six-stage pipeline. Triggers include "explain <concept", "draft the math for <concept", "build the explanation for <concept". Not for systems/applications prose, source ingestion, or interactive tutoring.
Its SKILL.md is about 810 tokens, which your agent loads only when the skill is triggered. The skill folder holds 70 other files, including scripts and reference files (for example `conftest.py`, `evals/concepts.json` and `evals/run_eval.py`).
It sits in Education, covering Tutoring and explanations. It works with Manim. The repository describes itself as: A Complete Guide to Zero-Knowledge Proof Systems.
When your agent uses it
- Drafting a mathematical concept explanation for the Proving Nothing book — produces book-ready
- Dependency-aware
- Multimodal (Sage + manim)
- Fact-checked material executing the Sanderson + Tao teaching method via a six-stage pipeline
Example prompts
- “Proving Nothing”
- “explain <concept”
- “draft the math for <concept”
- “/math-explainer”
Requirements
- Python 3
What it can do on your machine
Read from SKILL.md and the folder at commit 2789e5a. 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 4 files in scripts/ (Python, from the files we listed), which the agent can run.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
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
Math Explainer loads about 805 tokens when it runs, and up to ~4.6k if it reads all its reference files. Until then it costs about 112 tokens; SKILL.md has 315 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); the scripts in this folder are not scanned.
SKILL.md
Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 315 words (~805 tokens).
“Turn "explain " into book-ready material that executes the Sanderson + Tao method. Run the six stages in order; do not skip the Stage 6 gate.”
- name
- math-explainer
Files
SKILL.md and 66 other files (scripts, references) in .claude/skills/math-explainer of CharlesHoskinson/sevenlayer.
- SKILL.md
- .gitignore
- conftest.py
- evals/concepts.json
- evals/run_eval.py
- evals/sample_bundle/bundle.json
- references/.gitkeep
- references/accuracy-protocol.md
- references/dependency-protocol.md
- references/draft-quality.md
- references/pipeline.md
- references/sanderson-moves.md
- references/tao-staging.md
- scripts/__init__.py
- scripts/check_env.py
- scripts/draft_lint.py
- scripts/manim_render.py
- … and 50 more
Open the folder on GitHubat commit 2789e5a
Compare with similar skills
Math Explainer 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 |
|---|---|---|---|---|---|---|
| Math Explainer this skillCharlesHoskinson/sevenlayer | 116 | — | ~805 | Automated safety check: Pass | Custom licence | |
| Study Companion Enmingchen666/Reviva | 237 | — | ~5.7k | Automated safety check: Pass | None | |
| DeepTutor CLIHKUDS/DeepTutor | 41k | — | ~2.8k | Automated safety check: Pass | Apache-2.0 | |
| AI Engineering Project Tutorrohitg00/ai-engineering-from-scratch | 66k | — | ~1.6k | Automated safety check: Pass | MIT | |
| Hung-Yi Lee Teaching Stylevoidful/hung-yi-lee-skill | 1.3k | — | ~13k | Automated safety check: Pass | None | |
| Claude Certification Tutorrohitg00/ai-engineering-from-scratch | 66k | — | ~3k | Automated safety check: Pass | MIT |
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Related
Works with
Categories
Questions about Math Explainer
What does Math Explainer do?
A skill your agent uses when drafting a mathematical concept explanation for the "Proving Nothing" book — produces book-ready, dependency-aware, multimodal (Sage + manim), fact-checked material…. Math Explainer is an agent skill from CharlesHoskinson/sevenlayer. Use when drafting a mathematical concept explanation for the "Proving Nothing" book — produces book-ready, dependency-aware, multimodal (Sage + manim), fact-checked material executing the Sanderson + Tao teaching method via a six-stage pipeline.
When should I use Math Explainer?
Math Explainer fits situations like: drafting a mathematical concept explanation for the Proving Nothing book — produces book-ready; dependency-aware; multimodal (Sage + manim); fact-checked material executing the Sanderson + Tao teaching method via a six-stage pipeline.
How do I install Math Explainer in Claude Code?
Run `npx skills add CharlesHoskinson/sevenlayer --skill math-explainer -a claude-code`. Or copy the skill folder (.claude/skills/math-explainer in CharlesHoskinson/sevenlayer) into .claude/skills/math-explainer in your project. Claude Code loads it when a task matches its description.
How do I install Math Explainer in Codex?
Run `npx skills add CharlesHoskinson/sevenlayer --skill math-explainer -a codex`. Or copy the skill folder (.claude/skills/math-explainer in CharlesHoskinson/sevenlayer) into .agents/skills/math-explainer in your project. Codex loads it when a task matches its description.
Can I use Math Explainer 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 CharlesHoskinson/sevenlayer --skill math-explainer -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/math-explainer, .gemini/skills/math-explainer, .github/skills/math-explainer and .opencode/skills/math-explainer in your project.
What does Math Explainer need to run?
Going by SKILL.md and its folder, Math Explainer needs Python for the scripts in its folder. Our summary lists: Python 3.
Does Math Explainer access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Math Explainer 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. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.
What licence does Math Explainer use?
Math Explainer has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.
How many tokens does Math Explainer use?
About 805 tokens (SKILL.md is roughly 3.2k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 3.8k tokens, read only when the agent opens those files.
What are the alternatives to Math Explainer?
Skills that share tags, products or a category with Math Explainer: Study Companion En (mingchen666/Reviva, 237 stars), DeepTutor CLI (HKUDS/DeepTutor, 41k stars), AI Engineering Project Tutor (rohitg00/ai-engineering-from-scratch, 66k stars) and Hung-Yi Lee Teaching Style (voidful/hung-yi-lee-skill, 1.3k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Math Explainer?
CharlesHoskinson (a GitHub user) maintains it in CharlesHoskinson/sevenlayer, which has 116 GitHub stars. The repository holds 3 skills in this directory. The repository was last updated on August 31, 2026.
Source: CharlesHoskinson/sevenlayer on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.