GitHub has a growing ecosystem of open source SKILL.md skills. Some are excellent. Most are mediocre. A few are potentially dangerous. Here's how to find the good ones and avoid the bad ones.
Quick Answer: For a quick start, check
awesome-skill-mdon GitHub, a curated list of quality open source Claude Code skills. Evaluate skills by checking stars/activity, reading theSKILL.mdcontent, researching the creator, and reviewing issues/PRs.
Where to find skills on GitHub
Search queries that work:
SKILL.md claude code— finds repos containing SKILL.md filesawesome-skill-md— curated awesome listsclaude skills— broader but noisier resultsskill.md template— starter templates and examples
Curated lists:
The awesome-skill-md repository is a curated, categorized list of quality skills with links to guides and tools. Start here instead of raw GitHub search.
How to evaluate a GitHub skill
Before installing any skill from GitHub, check:
Stars and activity. A repo with 50 stars and recent commits is more trustworthy than one with 0 stars and no activity for 6 months.
The SKILL.md content. Open it and read it entirely. Is it well-written with clear instructions? Or is it a wall of generic text that looks AI-generated?
The creator. Do they have other repos? A profile with real projects? Or is it a throwaway account?
Issues and PRs. Active discussion means the community is using and improving the skill.
Security. Check for shell commands, file access, network requests, and credential references. See our security guide for a complete checklist.
Good open source skills to start with
Most quality open source skills are simple and focused. A 20-line SKILL.md that says "use pytest, follow these patterns, check these edge cases" is more valuable than a 500-line repo with a complex setup.
The best open source skills tend to be:
- Team coding standards that someone decided to share publicly
- Framework-specific patterns (React conventions, Django patterns)
- Simple workflow automations (commit messages, PR descriptions)
- Code quality checklists (security review, performance audit)
Open source vs marketplace skills
| Open source (GitHub) | Marketplace (Agensi) | |
|---|---|---|
| Price | Free | Free or paid |
| Security review | None — you check yourself | Automated scan + manual review |
| Quality guarantee | None | Reviewed before listing |
| Updates | Pull from repo | Download from marketplace |
| Creator accountability | Pseudonymous | Verified creator profile |
| Discovery | GitHub search | Categorized catalog |
Many creators do both — open source a basic version on GitHub and sell an enhanced version on Agensi. The open source version gets community contributions, the marketplace version gets focused development and support.
Contributing your skills
If you've built skills for your own workflow, open sourcing them helps the ecosystem:
- Create a public repo with your SKILL.md files
- Add a README explaining what each skill does and how to install it
- Add a LICENSE file (MIT or CC0 for maximum adoption)
- Submit a PR to awesome-skill-md to get listed
If your skill is polished enough, consider listing it on Agensi where you can earn revenue while maintaining an open source version.
Browse security-reviewed skills at Agensi.