google/skills is Google publishing first-party Agent Skills for Ads, Analytics and Cloud.

google/skills sits at 16,460 stars, Apache-2.0, +327 on August 8's trending page, organized into three product families with a .claude-plugin directory and plugins tree. August 5-7 commits show real curation: a migrated and validated GKE TPU dynamic-slices monitoring skill, a gcloud device-run update, and a new workflow section documenting the shared responsibility model. That last one matters most if you're shipping vendor skills to production, because Google is drawing an explicit line between what the skill guarantees and what you own.