sigma
Personalized 1-on-1 AI tutor using Bloom's 2-Sigma mastery learning. Guides users through any topic with Socratic questioning, adaptive pacing, and rich visual output (HTML dashboards, Excalidraw concept maps, generated images)
Install / Use
npx skills add sanyuan0704/sanyuan-skills --skill sigmaInstalls into whichever agent you are using.
SKILL.md
Installable skill definition
Quality Score
Category
Education & ResearchSupported Platforms
Our assessment of sigma
sigma scores 82/100 on our quality scale, 184th of 238 Education & Research skills we index.
We have not analysed the SKILL.md file itself yet, so the content part of this score is an estimate until our crawler reaches it.
With 3,925 GitHub stars, it is one of the more widely adopted skills in the catalogue.
Maintenance, license and trust
- The repository was last updated about 5 months ago. That is recent enough to be usable, but agent tooling moves fast, so check the instructions against your agent's current version.
- It is released under the MIT license, a permissive license that allows use, modification and commercial use with attribution.
- Its trust signals score 98/100, with no cautions. These come from repository metadata, not a code audit — read the skill file before letting an agent act on it.
sigma compared with similar skills
All 4 of these similar skills score higher than sigma; compare them before choosing.
| Skill | Score | Stars | Updated | Format |
|---|---|---|---|---|
| sigma (this skill)by sanyuan0704 | 82 | 3.9k | 5mo ago | SKILL.md |
| last30days-skillby mvanhorn | 100 | 63.0k | 4d ago | CLAUDE.md |
| LocalAIby mudler | 100 | 49.3k | today | MCP Server |
| algorithmic-artby anthropics | 100 | 177.9k | 5d ago | SKILL.md |
| pptxby anthropics | 100 | 177.9k | 5d ago | SKILL.md |
Frequently asked questions
- How do I install sigma?
- Run
npx skills add sanyuan0704/sanyuan-skills --skill sigma. The install tabs above show the steps for each supported agent. - Which AI agents does sigma work with?
- It is written for Zed, as a SKILL.md file. Other agents that read the same format can often use it too.
- Is sigma safe to use?
- It is MIT-licensed and scores 98/100 on trust signals. Skills are instructions an agent will follow, so read the file before installing it and do not approve commands you do not understand.
- Is sigma still maintained?
- The repository was last updated about 5 months ago. That is recent enough to be usable, but agent tooling moves fast, so check the instructions against your agent's current version.
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Languages
Trust signals
From repository metadata: license, adoption, age and documentation. Not a code audit — see the Safety scan above for what the skill file itself contains.