Agent skills and plugins are becoming a software supply chain
An updated repository cohort tests whether reusable agent skills and plugins are becoming portable, permissioned, evaluated software artifacts.
Supported by the targeted cohort
1073 repositories and cross-source discussion establish agent skills as a recognizable category, but distribution (14.6%), evaluation (7.7%), and versioning (6.4%) remain sparse. Portability is emerging faster than governance.
01
Search-match dynamics
Bars show monthly GitHub total_count plus captured Hugging Face models; the right column shows downloaded items used for detailed analysis.
Jan 262738144 loaded
Feb 264163105 loaded
Mar 266180126 loaded
Apr 265636137 loaded
May 265360125 loaded
Jun 265459129 loaded
Jul 265667132 loaded
Aug 263239174 loaded
02
What exists inside the category
One item may contain more than one feature.
Reusable skill artifacts
65 · 6.1%
Distribution and registries
157 · 14.6%
Cross-agent compatibility
534 · 49.8%
Evaluation and tests
83 · 7.7%
Versioning and releases
69 · 6.4%
Permission declarations
78 · 7.3%
Runtime compatibility
86 · 8%
Maintenance signals
53 · 4.9%
03
Representative projects
githubaffaan-m/ECC241,562 starsgithubmattpocock/skills227,725 starsgithub-archiveanthropics/skills160,423 starsgithubgarrytan/gstack128,977 starsgithubGraphify-Labs/graphify108,851 starsgithubJuliusBrussee/caveman91,945 starsgithubnexu-io/open-design89,941 starsgithubaddyosmani/agent-skills88,866 starsgithubDietrichGebert/ponytail87,633 starsgithubkoala73/worldmonitor83,587 stars
04
Cross-source validation
These publications are not part of the primary numeric cohort.
hf_daily_papers_globalRESOURCE2SKILL: Distilling Executable Agent Skills from Human-Created Multimodal Resourcesgithub_issues_globalTestSprite/testsprite-cli: [Hackathon] Support Agent Skills standard for install/setuphf_daily_papers_globalProgressive Agent Skill Generation via Reinforcement Learningx_manual_globalRecommended paper for agent skill builders.