Repository
leonardomso/33-js-concepts agent skills
- skills
- 6
- GitHub stars
- 67k
GitHub description: “📜 33 JavaScript concepts every developer should know.”
- Stars
- 66,534 (9,122 forks)
- Licence
- MIT
- Last push
- Sep 2026
- Created
- Sep 2018
- Homepage
- 33jsconcepts.com
- javascript
- concepts
- nodejs
- react
- angular
- programming
- javascript-programming
- javascript-closures
- javascript-engines
- primitive-types
- es6
- es6-javascript
- hacktoberfest
Install all skills
npx skills add leonardomso/33-js-conceptsAdd --skill <name> for a single skill and -a <agent> to choose the agent (see the agent guides).
Skills in leonardomso/33-js-concepts, ranked
Ranked by score. Sort bymost stars,trending,newest,recently updated
| # | Skill | Repository | Stars | Used in | Tokens | Auto-check | Licence | Updated |
|---|---|---|---|---|---|---|---|---|
| 1 | Verifies the technical accuracy of JavaScript concept pages by checking code examples, MDN and ECMAScript claims and external links through a five-phase method. | leonardomso/ | 67k | 1 repo | ~5k | Automated safety check: Pass | MIT | 28 days ago |
| 2 | Orchestrates five skills to produce a complete JavaScript concept documentation page, from resource curation through writing, tests, fact-checking and SEO. | leonardomso/ | 67k | — | ~3.9k | Automated safety check: Pass | MIT | 28 days ago |
| 3 | Finds, vets, writes up and maintains external articles, videos and courses for JavaScript concept pages, including audits for broken and outdated links. | leonardomso/ | 67k | — | ~4.9k | Automated safety check: Pass | MIT | 28 days ago |
| 4 | Runs a five-step SEO audit on JavaScript concept pages: keyword clusters, on-page checks, featured snippets, internal links and a written report. | leonardomso/ | 67k | — | ~8.8k | Automated safety check: Pass | MIT | 28 days ago |
| 5 | Generates Vitest tests for every runnable code example on a JavaScript concept documentation page, following a four-phase extraction and conversion process. | leonardomso/ | 67k | — | ~5.5k | Automated safety check: Pass | MIT | 28 days ago |
| 6 | Writes or reviews documentation pages for the 33 JavaScript Concepts project, following its structure, a beginner-friendly voice and rules against AI-sounding language. | leonardomso/ | 67k | — | ~14k | Automated safety check: Pass | MIT | 28 days ago |
Questions, answered from the data.
What is the best skill in leonardomso/33-js-concepts?
JavaScript Concept Fact Checker from leonardomso/33-js-concepts ranks first of the 6 skills in leonardomso/33-js-concepts listed here, with the highest score: its repository has 67k GitHub stars, 1 other GitHub owner carry a copy, its SKILL.md loads about 5k tokens and it passes the automated safety check with no findings. Next come JavaScript Concept Page Workflow and JS Concept Resource Curator.
Are the skills in leonardomso/33-js-concepts official?
None yet. All 6 skills in leonardomso/33-js-concepts listed here come from community repositories; a skill counts as official when the product's own GitHub organization publishes it.
How do I install all skills from leonardomso/33-js-concepts?
Run npx skills add leonardomso/33-js-concepts in your project: the open-source skills CLI installs the repository's skills into your coding agent's skills folder. To install a single skill, open its page here for the exact command.
How are these skills ranked?
By Skill Navigator score, which combines the GitHub stars of the skill's repository (shared across that repo's skills and discounted for large collections), how many other GitHub owners carry a copy of the skill, and automated SKILL.md quality checks, minus penalties for safety-check warnings and for each further skill from the same repository. Skills that fail the safety check are not listed.