1 eBay skill for Cowork. Download each as a .zip and add it once from Cowork’s Skills settings: it stays available across every session, and Cowork gets structured fields back instead of touring the page.
One .zip per skill. Inside: SKILL.md with the intent and the frontmatter, and the code that runs in the page.
Settings → Personalize → Skills. This is Cowork's own skill library, shared across every chat.
Click Add and choose the file you just downloaded. Cowork installs it once; no CLAUDE.md, no per-project setup.
The skill stays available in every session. Cowork runs it in your own Chrome, riding the session you are already signed into.