visual-diff-branches SKILL.md skillA
visual-diff-branches from flagrare/agent-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add flagrare/agent-skills/visual-diff-branches@git:20260910.6d2ba49Pins git:20260910.6d2ba49 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- flagrare/agent-skills
- Path
plugins/flagrare/skills/visual-diff-branches/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260910.6d2ba49, committed Sep 10, 2026
- Size
- 8,063 bytes
- Repository stars
- 13
- License
- none declared
Use when the question is how pages render on one git ref versus another: checking a design-system, tokens, typography or styling PR for visual regressions on your feature's pages, producing before/after screenshots for a designer, answering 'did this branch change how X looks', or when a screenshot comparison is needed and no image library (ImageMagick, Pillow, sharp, pixelmatch) is installed. Triggers on 'compare main vs this branch', 'before and after screenshots', 'visual regression on this…
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Visual Diff Branches Answer "what does this branch change on these pages" with evidence: the same pages captured on each ref, pixel-diffed to show *where*, and measured with computed styles to show *what*. Everything runs on the browser the project already has (Playwright's Chromium), so nothing gets installed. Scripts live in `scripts/` next to this file. They resolve `@playwright/test` from the **project's** `node_modules`, so run them with the project root as the working directory and pass the scripts by absolute path. The only file you write per project is a `shots.mjs` config (contract in `references/config.md`, worked example in `references/shots.example.mjs`). --- ## Step 1: Decide what "the branch" means A PR branch is usually behind its base. Comparing the raw branch against main mixes the PR's own changes with every fix main landed since the branch forked, and those show up as regressions the PR did not cause. Decide up front and say which one you compared: | Question | Compare | |---|---| | "What will land if this merges?" (the usual case) | a throwaway branch: `git checkout -B smoke/<name> origin/<branch> && git merge --no-edit origin/main` | …
Read the whole file at its exact version.
How to install
mdr add flagrare/agent-skills/visual-diff-branches@sha256:e0fb5ee9d56d6536The line at the top of this page pins the label git:20260910.6d2ba49, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_pqx73rrepsvk3d6d)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Sep 10, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (8063 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
flagrare/agent-skills · 13 stars · license none declared · pushed 2026-11-04 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_pqx73rrepsvk3d6d GET https://markdownregistry.com/api/v1/resolve?ref=flagrare/agent-skills/visual-diff-branches GET https://markdownregistry.com/api/v1/blob/e0fb5ee9d56d6536fc5fe7b33cc634d52cf11c2373d1a97c75298e6edf883658
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.