Vercel skills
Vercel released skills, a CLI for installing and managing skill packages for agents, plus skills.sh, a directory and leaderboard for skill packages.
The call on this one
What shipped is free. The call on it, what to do about it and the condition on that, opens with a signup: free, no card, every edition in full.
It becomes $50 a year, and signing up now keeps your first year free.