Official
Official skills
First-party skills straight from the source. Published and maintained by Anthropic and OpenAI, mirrored here with the full document and one-click install.
These are the skills the model builders ship themselves. Anthropic's document suite — pptx, docx, xlsx, pdf — and design skills like canvas-design and frontend-design are the reference implementations everyone else forks; OpenAI's set leans into Figma, deployment and repo workflows. Because they come straight from the source, they track the upstream repo, not a third-party re-upload that quietly goes stale.
Every official skill here carries its full SKILL.md and its auxiliary scripts, packaged exactly as the repo publishes them, and installs onto any of your agents in one click. When a skill needs a helper script to do its job — the way pptx leans on a Python thumbnail generator — that script comes with it, so it works the moment it lands.
Star counts are the real GitHub numbers; install counts are omitted rather than invented, because a first-party skill's authority comes from who published it, not from a usage number we could only estimate.