Ck

The agent harness performance optimization system. Skills, instincts, memory, security, and research-first development for Claude Code, Codex, Opencode, Cursor and beyond.From the repository description

Install

npx -y skills add affaan-m/ECC --skill ck

Assembled from the repository path, not quoted from the project. Check it against their README if it does not work.

Keep looking

Skills are one crate of 627,801. Ordering is by how many stacks a row turns up in, so the top of any crate is what has actually been picked rather than what has the most stars.