What languages are agent skills written in?

Non-English AI agent skills are growing rapidly, reaching 14.3% of the GitSkills dataset compared to 13.0% for GitHub documentation overall, with Chinese being the dominant non-English language at 6.2%. This growth suggests AI development is accelerating outside English-speaking regions, particularly in Asia, since AI agents can follow instructions equally well regardless of the language used to write them. The expansion is occurring at a dramatically faster pace than historical non-English adoption on GitHub, indicating a fundamental shift in how AI development is distributed globally.