Vrt

What it does

When your agent uses it

• The Visual-Regression-Tests (Chromatic) GitHub Actions workflow on the current
• Explicitly asks to run visual regression tests

Example prompts

• “verify”
• “/vrt”

Requirements

• Pre-approved tools (allowed-tools): Bash(gh workflow run *), Bash(gh run list *), Bash(gh run view *), Bash(gh run watch *), Bash(git branch --show-current), Bash(git rev-list *)

Workflow steps

4 steps, taken from the step headings in SKILL.md.

1. 1Resolve the branch, then ask
2. 2Dispatch the workflow
3. 3Confirm the run started
4. 4If no run appears

What it can do on your machine

Read from SKILL.md and the folder at commit ce5eaec. It shows what the files ask for, not the result of running them.

• Tool permissions

  Pre-approves these tools, so the agent can use them without asking each time:

  • Bash(gh workflow run *)
  • Bash(gh run list *)
  • Bash(gh run view *)
  • Bash(gh run watch *)
  • Bash(git branch --show-current)
  • Bash(git rev-list *)

  From allowed-tools in the SKILL.md frontmatter.

• Runs code

  Shell commands in SKILL.md call:

  • git
  • gh

  From the folder's file list and the shell code blocks in SKILL.md.

• Network

  No URLs in SKILL.md. Its commands use git and gh, which can reach the network depending on how they are called.

  From URLs in SKILL.md, links to its own repository left out.

• Credentials

  Names no API keys, tokens, secrets or passwords.

  From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Vrt loads about 787 tokens when it runs. Until then it costs about 99 tokens; SKILL.md has 360 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it

~99

When it runs · the whole SKILL.md, loaded when a task matches

~787

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from marigold-ui/marigold at commit ce5eaec, republished under its MIT licence (© marigold-ui). 360 words, ~787 tokens.

name

vrt

description

DST — Trigger the Visual-Regression-Tests (Chromatic) GitHub Actions workflow on the current or a given branch. Use ONLY when the user explicitly asks to run visual regression tests, run Chromatic, or types `/vrt`. Dispatching consumes Chromatic snapshot quota, so never invoke this proactively, never as a follow-up to unrelated work, and never to "verify" a change nobody asked to verify.

allowed-tools

Bash(gh workflow run *), Bash(gh run list *), Bash(gh run view *), Bash(gh run watch *), Bash(git branch --show-current), Bash(git rev-list *)

/vrt              # current branch
/vrt <branch>     # named branch

git branch --show-current
git rev-list --count @{u}..HEAD

gh workflow run "Visual-Regression-Tests" --ref <branch>

gh run list --workflow="Visual-Regression-Tests" --limit=1

vars.VRT_ENABLED != 'false'

© marigold-ui, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in .claude/skills/vrt of marigold-ui/marigold.

Open the folder on GitHubat commit ce5eaec