A bridge between a design-system code repository and Claude Design, a tool that creates live user-interface mockups from prompts. It uploads the repository’s components, styles, fonts, and design tokens so Claude Design can use them.

Use it to synchronize design tokens, Storybook components, and CSS variables between design work and code. It helps create mockups that use the team’s real interface components.

Without it, generated designs use generic interface parts and may not match the product or the code engineers maintain. This keeps the designs aligned with the existing visual system and components.

design-sync — Skill for Claude Code by imMamdouhaboammar

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 imMamdouhaboammar/get-fable --skill design-sync

Clone the repo

git clone --depth 1 https://github.com/imMamdouhaboammar/get-fable

Made for: Claude Code.

Or install get-fable, the plugin that ships this one along with the rest of its 78 skills, 1 agent, 5 hooks.

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/immamdouhaboammar/get-fable/design-sync/github.svg)](https://agentmods.dev/skills/immamdouhaboammar/get-fable/design-sync)

Your own site

<a href="https://agentmods.dev/skills/immamdouhaboammar/get-fable/design-sync"><img src="https://agentmods.dev/badge/skills/immamdouhaboammar/get-fable/design-sync/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/immamdouhaboammar/get-fable/design-sync"><img src="https://agentmods.dev/badge/skills/immamdouhaboammar/get-fable/design-sync.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 21 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 6,324 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 97% copy Near-identical to another mod 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.

Model	Per session	Once invoked
Fable 5.1	$0.00021	$0.06324
Opus 5	$0.00010	$0.03162
Sonnet 5	$0.00004	$0.01265
Haiku 4.5	$0.00002	$0.00632

Measured 10d ago against content hash 6e36d2d92e3f, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

design-sync 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 10d ago.

The scan reads SKILL.md. This mod also ships 23 executable files (lib/bundle.mjs, lib/common.mjs, lib/css-fallback.mjs, …), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

Origin

This is a copy

97% identical to design-sync — 113 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

assets/skills/claude-code/design-sync/SKILL.md · 127 lines

How it starts

The opening of the file, as written. The whole thing — 127 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Sync a design system to claude.ai/design

What this is for

Claude Design (claude.ai/design) is Claude's design tool: users prompt a design agent and it builds working UI — screens, flows, prototypes — rendered live in the browser from real React code. Out of the box it designs with generic components. This skill changes that: it converts the user's design-system repo into the format Claude Design consumes and uploads it, so from then on the design agent builds with the customer's actual components — every design it produces is on-brand, made of their real parts, and maps 1:1 onto code their engineers can ship.

That framing should drive every judgment call in this skill, because each uploaded artifact is an input to that agent (or to the humans steering it):

Uploaded artifact	Consumed by	For
`_ds_bundle.js` + `_vendor/`	the design agent's runtime	every design it produces renders these real compiled components from `window.<globalName>.*`
`styles.css`, `fonts/`, `tokens/`, `_ds_bundle.css`	every rendered design	the look — tokens, fonts, and component styles, all reachable from `styles.css`'s `@import` closure (designs receive only that closure)
`<Name>.d.ts` (`<Name>Props`)	the design agent	the API contract it codes against
`<Name>.prompt.md`	the design agent	its usage reference — how to compose the component, with examples
`<Name>.html` preview card	humans in the component picker	how they find components and trust the sync
`_ds_sync.json`	future syncs	the sync anchor — content hashes that let a re-sync (any machine) skip re-verifying unchanged components AND compute exactly what to upload/delete

This is why fidelity is the whole game: a component that renders wrong here renders wrong in every design the agent ever builds with it, and a wrong .d.ts or misleading .prompt.md makes the agent misuse the API everywhere. The verification loops in the sub-skills exist because of this — they are not bureaucracy.

Read the full file on GitHub · 127 lines

Files

What ships with it

25 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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.

10d ago First seen · 127 lines · 21 tokens per session scan A 6e36d2d92e3f

Subscribe to this mod's changes

design-sync is a skill published in the GitHub repository imMamdouhaboammar/get-fable (4 stars, last pushed today), licensed MIT. It adds 21 tokens to every session and 6,324 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. It is 97% identical to design-sync, differing in 113 lines, and is treated as a copy.

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