Skill Constellations: Tracing the Supply Chain of Agent Skills on GitHub

Title: Skill Constellations: Tracing the Supply Chain of Agent Skills on GitHub Source: huggingface Git history analysis of SKILL.md files reveals a fragmented software supply chain for AI coding agents, mapping 2,193,119 skill adoptions across GitHub. The study identifies a lack of versioning and provenance in distributed agent instructions, showing that a small number of repositories act as primary sources for most downstream copies.