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diffity-diff

Open the diffity diff viewer in the browser to see your changes

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less than a month ago
In the catalog since
1 Oct 2026
From
nilbuild/diffity
Web & Frontend
Get it through your agent npx skills add nilbuild/diffity@diffity-diff

Skill instructions

Rendered from the published SKILL.md, 23 lines.

Diffity Diff Skill

You are opening the diffity diff viewer so the user can see their changes in the browser.

Arguments

  • ref (optional): Git ref to diff (e.g. main..feature, HEAD~3) or a GitHub PR URL (e.g. https://github.com/owner/repo/pull/123). Defaults to working tree changes.

Instructions

  1. Check that diffity is available: run which diffity. If not found, install it with npm install -g diffity.

  2. Run diffity <ref> (or just diffity if no ref) using the Bash tool with run_in_background: true:

    • The CLI handles everything: if an instance is already running for this repo it reuses it and opens the browser, otherwise it starts a new server and opens the browser.
    • Do NOT use & or --quiet — let the Bash tool handle backgrounding.

  3. Wait 2 seconds, then run diffity list --json to get the port.

  4. Tell the user diffity is running. Print the URL and keep it short — don't show session IDs, hashes, or other internals. Example:

    Diffity is running at http://localhost:5391

    When you're ready:

    • Leave comments on the diff in your browser, then run /diffity-resolve to fix them
    • Or run /diffity-review to get an AI code review