DeepTutor CLI
HKUDS/DeepTutor
Teaches the agent to set up and run DeepTutor from the command line: chat and capabilities, knowledge bases, partners, memory, sessions, notebooks and the server or Web app.
ELI5-style explanations with analogies and multiple examples.
Install Concept Explainer
$ npx skills add mingchen666/Reviva --skill concept-explainer -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install mingchen666/Reviva concept-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/mingchen666/Reviva.git skills-src && mkdir -p .claude/skills && cp -r skills-src/electron/builtin-assets/skills/concept-explainer .claude/skills/concept-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 "concept-explainer" agent skill from https://github.com/mingchen666/Reviva/tree/main/electron/builtin-assets/skills/concept-explainer into .claude/skills/concept-explainer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "concept-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/mingchen666/Reviva/tree/main/electron/builtin-assets/skills/concept-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 mingchen666/Reviva --skill concept-explainer -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install mingchen666/Reviva concept-explainer --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mingchen666/Reviva.git skills-src && mkdir -p .agents/skills && cp -r skills-src/electron/builtin-assets/skills/concept-explainer .agents/skills/concept-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 "concept-explainer" agent skill from https://github.com/mingchen666/Reviva/tree/main/electron/builtin-assets/skills/concept-explainer into .agents/skills/concept-explainer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "concept-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 mingchen666/Reviva --skill concept-explainer -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install mingchen666/Reviva concept-explainer --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mingchen666/Reviva.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/electron/builtin-assets/skills/concept-explainer .cursor/skills/concept-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 "concept-explainer" agent skill from https://github.com/mingchen666/Reviva/tree/main/electron/builtin-assets/skills/concept-explainer into .cursor/skills/concept-explainer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "concept-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/mingchen666/Reviva.git --path electron/builtin-assets/skills/concept-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 mingchen666/Reviva --skill concept-explainer -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install mingchen666/Reviva concept-explainer --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mingchen666/Reviva.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/electron/builtin-assets/skills/concept-explainer .gemini/skills/concept-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 "concept-explainer" agent skill from https://github.com/mingchen666/Reviva/tree/main/electron/builtin-assets/skills/concept-explainer into .gemini/skills/concept-explainer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "concept-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 mingchen666/Reviva concept-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 mingchen666/Reviva --skill concept-explainer -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/mingchen666/Reviva.git skills-src && mkdir -p .github/skills && cp -r skills-src/electron/builtin-assets/skills/concept-explainer .github/skills/concept-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 "concept-explainer" agent skill from https://github.com/mingchen666/Reviva/tree/main/electron/builtin-assets/skills/concept-explainer into .github/skills/concept-explainer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "concept-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 mingchen666/Reviva --skill concept-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 mingchen666/Reviva concept-explainer --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mingchen666/Reviva.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/electron/builtin-assets/skills/concept-explainer .opencode/skills/concept-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 "concept-explainer" agent skill from https://github.com/mingchen666/Reviva/tree/main/electron/builtin-assets/skills/concept-explainer into .opencode/skills/concept-explainer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "concept-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
concept-explainer- GitHub stars
- 236
- Token cost
- ~1.1k tokens
- SKILL.md length
- 373 words
- Files
- 2
- Skills in repo
- 54
- Repo updated
- First seen
- Licence
- None found
At a glance
ELI5-style explanations with analogies and multiple examples.
- Explaining difficult concepts
- SKILL.md covers Explanation Levels, Explanation Framework, Template: Standard Explanation and Analogy Patterns, plus 3 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
- Clarifying confusing topics
What it does
Concept Explainer is an agent skill from mingchen666/Reviva. ELI5-style explanations with analogies and multiple examples. Explains concepts at different levels (ELI5, high school, undergraduate, graduate). Uses real-world analogies and visual metaphors. Use when explaining difficult concepts, clarifying confusing topics, or learning new subjects. Triggers - explain concept, ELI5, explain like I'm 5, what is, how does, why does, analogy for, simple explanation.
Its SKILL.md is about 1.1k tokens, which your agent loads only when the skill is triggered. The skill folder holds 1 other file (for example `config.json`).
It sits in Education, covering Tutoring and explanations. The repository describes itself as: Local-first AI learning workspace — ask, note, review and create around your own materials. Wiki KB, Agents, Skills, creation tools.Private NotebookLM Alternative.AI….
When your agent uses it
- Explaining difficult concepts
- Clarifying confusing topics
- Learning new subjects
- - explain concept
Example prompts
- “/concept-explainer”
What it can do on your machine
Read from SKILL.md and the folder at commit 24bde40. 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
No scripts in the folder and no shell commands in SKILL.md (its code samples are mermaid and markdown).
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
Concept Explainer loads about 1.1k tokens when it runs. Until then it costs about 106 tokens; SKILL.md has 373 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
Without a licence we can't republish the file, so here is its outline and opening line. It has 373 words (~1,115 tokens).
“Clear explanations with analogies and examples at multiple difficulty levels.”
- name
- concept-explainer
Files
SKILL.md and 1 other file in electron/builtin-assets/skills/concept-explainer of mingchen666/Reviva.
- SKILL.md
- config.json
Open the folder on GitHubat commit 24bde40
Compare with similar skills
Concept 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 |
|---|---|---|---|---|---|---|
| Concept Explainer this skillmingchen666/Reviva | 236 | — | ~1.1k | Automated safety check: Pass | None | |
| DeepTutor CLIHKUDS/DeepTutor | 41k | — | ~2.3k | Automated safety check: Pass | Apache-2.0 | |
| AI Engineering Project Tutorrohitg00/ai-engineering-from-scratch | 65k | — | ~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 | 65k | — | ~3k | Automated safety check: Pass | MIT | |
| StudyVault Quiz Tutorbevibing/tutor-skills | 1.3k | — | ~1.4k | Automated safety check: Pass | MIT |
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Related
Categories
Questions about Concept Explainer
What does Concept Explainer do?
ELI5-style explanations with analogies and multiple examples. Concept Explainer is an agent skill from mingchen666/Reviva. ELI5-style explanations with analogies and multiple examples.
When should I use Concept Explainer?
Concept Explainer fits situations like: explaining difficult concepts; clarifying confusing topics; learning new subjects; - explain concept.
How do I install Concept Explainer in Claude Code?
Run `npx skills add mingchen666/Reviva --skill concept-explainer -a claude-code`. Or copy the skill folder (electron/builtin-assets/skills/concept-explainer in mingchen666/Reviva) into .claude/skills/concept-explainer in your project. Claude Code loads it when a task matches its description.
How do I install Concept Explainer in Codex?
Run `npx skills add mingchen666/Reviva --skill concept-explainer -a codex`. Or copy the skill folder (electron/builtin-assets/skills/concept-explainer in mingchen666/Reviva) into .agents/skills/concept-explainer in your project. Codex loads it when a task matches its description.
Can I use Concept 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 mingchen666/Reviva --skill concept-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/concept-explainer, .gemini/skills/concept-explainer, .github/skills/concept-explainer and .opencode/skills/concept-explainer in your project.
What does Concept Explainer need to run?
SKILL.md names no scripts, command-line tools or credentials: Concept Explainer is instructions for the agent only.
Does Concept 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 Concept 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. Review the folder before installing.
What licence does Concept Explainer use?
No licence was found for Concept Explainer or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does Concept Explainer use?
About 1.1k tokens (SKILL.md is roughly 4.5k 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 Explainer?
Skills that share tags, products or a category with Concept Explainer: DeepTutor CLI (HKUDS/DeepTutor, 41k stars), AI Engineering Project Tutor (rohitg00/ai-engineering-from-scratch, 65k stars), Hung-Yi Lee Teaching Style (voidful/hung-yi-lee-skill, 1.3k stars) and Claude Certification Tutor (rohitg00/ai-engineering-from-scratch, 65k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Concept Explainer?
mingchen666 (a GitHub user) maintains it in mingchen666/Reviva, which has 236 GitHub stars. The repository holds 54 skills in this directory. The repository was last updated on September 21, 2026.
Source: mingchen666/Reviva on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.