Opens diffity's browser-based diff viewer so you can review changes without leaving your terminal workflow. Pass it a git ref, a GitHub PR URL, or nothing at all to see working tree changes. The skill handles the installation check, spins up the server in the background, and gives you a clean URL. It's part of the larger diffity suite that includes review comments and file browsing. Honestly most useful when you want a visual diff that's easier to parse than git's output, especially for larger changesets where the terminal starts to feel cramped. The auto-reuse of running instances is a nice touch.
npx skills add https://github.com/kamranahmedse/diffity --skill diffity-diff