Agent skill

Bm Design System

by buildermethods in buildermethods/bm-skills

Guides you through creating and implementing a design system for your application.

No licenceAuto-check passedFrontend & Design

Install Bm Design System

skills CLI
$ npx skills add buildermethods/bm-skills --skill bm-design-system -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install buildermethods/bm-skills bm-design-system --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/buildermethods/bm-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/bm-design-system .claude/skills/bm-design-system && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
bm-design-system
GitHub stars
145
Token cost
~6.5k tokens
SKILL.md length
2,937 words
Files
58 (incl. references)
Skills in repo
4
Repo updated
First seen
Licence
None found

At a glance

Guides you through creating and implementing a design system for your application.

  • Works in 8 steps: Detect target codebase state → Confirm route → Branding defaults → …
  • Tasks that involve Design systems
  • SKILL.md covers Audience assumption, Core interaction principles, Hard assumptions and Phase 0 — Detect target…, plus 10 more sections
  • Runs TypeScript scripts from its folder; calls modal and npm; reaches fonts.googleapis.com

What it does

Bm Design System is an agent skill from buildermethods/bm-skills. Guides you through creating and implementing a design system for your application.

Its SKILL.md is about 6.5k tokens, which your agent loads only when the skill is triggered. The skill folder holds 60 other files, including reference files (for example `references/agent-instructions.md`, `references/derive-palette.md` and `references/lib/theme.ts`).

It sits in Frontend & Design, covering Design systems. It works with Vite and Tailwind CSS. The repository describes itself as: A collection of public open-source tools for builders, by Brian Casel @ Builder Methods (buildermethods.com).

When your agent uses it

  • Tasks that involve Design systems

Example prompts

  • “Use the bm-design-system skill to guide you through creating and implementing a design system for your application”
  • “/bm-design-system”

Requirements

  • Node.js

Workflow steps

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

  1. Detect target codebase state
  2. Confirm route
  3. Branding defaults
  4. (re-run only) Scope
  5. Write files
  6. Update agent instructions
  7. Scan for existing UI to migrate
  8. Wrap up

What it can do on your machine

Read from SKILL.md and the folder at commit 739fde3. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Ships script files (TypeScript, from the files we listed), which the agent can run.

    Shell commands in SKILL.md call:

    • modal
    • npm

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

  • Network

    Hosts in commands or code, which the agent is likely to contact:

    • fonts.googleapis.com

    Also links to:

    • tailwindcss.com

    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

Bm Design System loads about 6.5k tokens when it runs, and up to ~54k if it reads all its reference files. Until then it costs about 25 tokens; SKILL.md has 2,937 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~25
When it runs · the whole SKILL.md, loaded when a task matches
~6.5k
With references · SKILL.md plus every file in references/, read only if the agent opens them
~54k

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

Auto-check passed

The automated check found no risky patterns in SKILL.md.

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

Without a licence we can't republish the file, so here is its outline and opening line. It has 2,937 words (~6,537 tokens).

“You are guiding a builder through scaffolding a complete design system into a React + Tailwind v4 codebase. The output is a single-page reference at /admin/design-system that previews and documents every primitive, plus a small set of reusable shadcn-style components…”

— opening of SKILL.md by buildermethods
name
bm-design-system

Read the full SKILL.md on GitHub

Files

SKILL.md and 57 other files (references) in skills/bm-design-system of buildermethods/bm-skills.

  • SKILL.md
  • references/agent-instructions.md
  • references/components-ui/badge.tsx
  • references/components-ui/button-dropdown.tsx
  • references/components-ui/button.tsx
  • references/components-ui/checkbox.tsx
  • references/components-ui/data-table.tsx
  • references/components-ui/dialog.tsx
  • references/components-ui/dropdown-menu.tsx
  • references/components-ui/input.tsx
  • references/components-ui/radio.tsx
  • references/components-ui/rich-text-field.tsx
  • references/components-ui/select.tsx
  • references/components-ui/theme-toggle.tsx
  • references/derive-palette.md
  • references/lib/theme.ts
  • references/lib/utils.ts
  • references/page
  • … and 40 more

Open the folder on GitHubat commit 739fde3

Compare with similar skills

Bm Design System next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Bm Design System compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Bm Design System this skillbuildermethods/bm-skills145—~6.5kAutomated safety check: PassNone
Creative Tim UI Blockscreativetimofficial/ui12k—~2.1kAutomated safety check: NotesMIT
Frontend UI FunctionalvictorGPT/vibeusage131—~939Automated safety check: PassMIT
Tailwind V4 Shadcnever-works/ever-works1582 repos~3.8kAutomated safety check: PassMIT
Shadcn Tailwind UILiarMTTT/TavernWeave148—~1.7kAutomated safety check: PassCustom licence
Redesign My Landingpageinstructa/agent-skills139—~1.8kAutomated safety check: PassNone

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Questions about Bm Design System

What does Bm Design System do?

Guides you through creating and implementing a design system for your application. Bm Design System is an agent skill from buildermethods/bm-skills. Guides you through creating and implementing a design system for your application.

When should I use Bm Design System?

Bm Design System fits situations like: tasks that involve Design systems.

How do I install Bm Design System in Claude Code?

Run `npx skills add buildermethods/bm-skills --skill bm-design-system -a claude-code`. Or copy the skill folder (skills/bm-design-system in buildermethods/bm-skills) into .claude/skills/bm-design-system in your project. Claude Code loads it when a task matches its description.

How do I install Bm Design System in Codex?

Run `npx skills add buildermethods/bm-skills --skill bm-design-system -a codex`. Or copy the skill folder (skills/bm-design-system in buildermethods/bm-skills) into .agents/skills/bm-design-system in your project. Codex loads it when a task matches its description.

Can I use Bm Design System in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add buildermethods/bm-skills --skill bm-design-system -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/bm-design-system, .gemini/skills/bm-design-system, .github/skills/bm-design-system and .opencode/skills/bm-design-system in your project.

What does Bm Design System need to run?

Going by SKILL.md and its folder, Bm Design System needs TypeScript for the scripts in its folder and the command-line tools its instructions call (modal and npm). Our summary lists: Node.js.

Does Bm Design System access the network?

SKILL.md names 2 domains. In commands or code: fonts.googleapis.com; the agent is likely to contact it when it follows the instructions. As links in the text: tailwindcss.com. This is read from the text; nothing was executed.

Is Bm Design System safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Bm Design System use?

No licence was found for Bm Design System or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.

How many tokens does Bm Design System use?

About 6.5k tokens (SKILL.md is roughly 26k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 47k tokens, read only when the agent opens those files.

What are the alternatives to Bm Design System?

Skills that share tags, products or a category with Bm Design System: Creative Tim UI Blocks (creativetimofficial/ui, 12k stars), Frontend UI Functional (victorGPT/vibeusage, 131 stars), Tailwind V4 Shadcn (ever-works/ever-works, 158 stars) and Shadcn Tailwind UI (LiarMTTT/TavernWeave, 148 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Bm Design System?

buildermethods (a GitHub organization) maintains it in buildermethods/bm-skills, which has 145 GitHub stars. The repository holds 4 skills in this directory. The repository was last updated on October 7, 2026.

Source: buildermethods/bm-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.