dembrandt

dembrandt is a skill for Claude Code from gertsylvest/meta-team. It costs 45 tokens per session (589 once invoked), scanned A, original, MIT.

A tool that reads a live website and extracts its design tokens—shared choices for colors, fonts, spacing, borders, shadows, and components—into a standard JSON format.

In plain words
What is it for?
Use it to inspect a website’s design system, including optional dark-mode or mobile values, for project documentation or interface work.
Why use it?
It provides a structured record of an existing site’s visual rules instead of requiring them to be copied manually.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Good fit Use it to inspect a website’s design system, including optional dark-mode or mobile values, for project documentation or interface work.

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Install with agentmods
npx agentmods add skills/gertsylvest/meta-team/dembrandt
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add gertsylvest/meta-team --skill dembrandt
Clone the repo
git clone --depth 1 https://github.com/gertsylvest/meta-team

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for dembrandt

README.md
[![agentmods](https://agentmods.dev/badge/skills/gertsylvest/meta-team/dembrandt/github.svg)](https://agentmods.dev/skills/gertsylvest/meta-team/dembrandt)
Your own site
<a href="https://agentmods.dev/skills/gertsylvest/meta-team/dembrandt"><img src="https://agentmods.dev/badge/skills/gertsylvest/meta-team/dembrandt/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for dembrandt

Your own site · 80×15
<a href="https://agentmods.dev/skills/gertsylvest/meta-team/dembrandt"><img src="https://agentmods.dev/badge/skills/gertsylvest/meta-team/dembrandt.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 45 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 589 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00045 $0.00589
Opus 5 $0.00023 $0.00295
Sonnet 5 $0.00009 $0.00118
Haiku 4.5 $0.00005 $0.00059

Measured 11d ago against content hash d7be69d5b8d5, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

dembrandt scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 11d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

library/skills/dembrandt/SKILL.md · 73 lines

How it starts

The opening of the file, as written. The whole thing — 73 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Dembrandt

Extract a website's design tokens (colors, typography, spacing, shadows, borders, components) into W3C DTCG-format .tokens.json using the Dembrandt CLI.

Instructions

The target URL is in $ARGUMENTS. If no URL is provided, ask the user for one before proceeding.

1. Check installation

which dembrandt || echo "not installed"

If not installed, use npx dembrandt in place of dembrandt in all commands below (no install required).

2. Run extraction

Default command — outputs W3C DTCG tokens to output/<domain>/<timestamp>.tokens.json:

dembrandt <url> --dtcg --save-output

Adjust flags based on the site:

Situation Flag to add
JS-heavy SPA or slow site --slow
Cloudflare / bot-detection issues --browser=firefox (install first: npx playwright install firefox)
Need dark mode tokens --dark-mode
Mobile viewport (390×844) --mobile

Example for a resilient extraction:

dembrandt stripe.com --dtcg --save-output --browser=firefox --slow

3. Move output to project documentation

Dembrandt writes to output/<domain>/ by default. After extraction, move the files to the project's canonical design token location.

Derive a kebab-case short name from the site's domain (e.g. stripe.comstripe, fonts.google.comgoogle-fonts) and run:

SITE_SLUG="<web_site_shortname_kebab>"
DEST="project-docs/project-documentation/design-tokens/$SITE_SLUG"
mkdir -p "$DEST"
mv output/<domain>/* "$DEST/"

Confirm the files are in place:

ls "$DEST"

4. Report to the user

Report the final file paths and summarize what token categories were extracted (colors, typography, spacing, shadows, borders, components, etc.).

5. Next steps (optional)

If the task requires integrating extracted tokens into the project:

  • Copy relevant tokens into the project's design token file (CSS variables, YAML, or the project's existing format)
  • Update design-vision.md to note the reference site and any borrowed tokens

Read the full file on GitHub · 73 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 11d ago First seen · 73 lines · 45 tokens per session scan A d7be69d5b8d5

Subscribe to this mod's changes

dembrandt is a skill published in the GitHub repository gertsylvest/meta-team (5 stars, last pushed 1mo ago), licensed MIT. It adds 45 tokens to every session and 589 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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