design-drift-detector

design-drift-detector is a skill for Claude Code from atezer/FMCP. It costs 121 tokens per session (4,871 once invoked), scanned A, original, MIT.

A skill for finding differences between implemented code and Figma designs on iOS, Android, and the web. It checks design tokens, components, and whether platforms have fallen out of sync.

In plain words
What is it for?
Detecting changed token values, changed Figma components, and gaps between web, iOS, and Android implementations. It is intended to run through the design-system audit orchestrator.
Why use it?
It helps reveal when code no longer matches the approved design or when one platform was updated while another remained old.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the figma-mcp-bridge plugin — 28 skills, 11 commands, 3 agents, 1 MCP server shipped together

Good fit Detecting changed token values, changed Figma components, and gaps between web, iOS, and Android implementations. It is intended to run through the design-system audit orchestrator.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/atezer/fmcp/design-drift-detector
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 atezer/FMCP --skill design-drift-detector
Clone the repo
git clone --depth 1 https://github.com/atezer/FMCP

Made for: Claude Code.

Or install figma-mcp-bridge, the plugin that ships this one along with the rest of its 28 skills, 11 commands, 3 agents, 1 MCP server.

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 design-drift-detector

README.md
[![agentmods](https://agentmods.dev/badge/skills/atezer/fmcp/design-drift-detector.svg)](https://agentmods.dev/skills/atezer/fmcp/design-drift-detector)
Your own site
<a href="https://agentmods.dev/skills/atezer/fmcp/design-drift-detector"><img src="https://agentmods.dev/badge/skills/atezer/fmcp/design-drift-detector.svg" alt="Measured on agentmods" height="20"></a>
Per session 121 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 4,871 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 $0.00121 $0.04871
Opus 5 $0.00060 $0.02436
Sonnet 5 $0.00024 $0.00974
Haiku 4.5 $0.00012 $0.00487

Measured 7d ago against content hash a3bcd4718949, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

design-drift-detector 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 7d 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.

skills/design-drift-detector/SKILL.md · 410 lines

How it starts

The opening of the file, as written. The whole thing — 410 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Design Drift Detector (Multi-Platform)

Kullanım (v3.1+): SADECE fmcp-ds-audit-orchestrator alt-skill'i olarak kod↔figma drift detection için çağrılır. Doğrudan entry point DEĞİL. Kullanıcı "kod tasarımla uyumlu mu?" dediğinde önce orchestrator yüklenir.

Design Token Kuralı: Bu skill'deki kod örneklerinde geçen font adları, renk kodları, piksel boyutları yalnızca FORMAT gösterimidir. Çalışma anında tüm design token değerleri (font, renk, boyut, spacing, radius, gölge) kayıtlı kütüphaneden (figma_get_variables, figma_get_styles) veya kullanıcıdan okunmalıdır. Hardcoded token değeri kullanma. Detay: project-context.md → "Design Token Kuralı".

Overview

Bu skill, implementasyon sonrasında oluşan kod-tasarım sapmalarını iOS, Android ve Web platformlarında ayrı ayrı ve cross-platform olarak tespit eder. Resmi Figma plugininde bu yetenek yoktur.

Drift türleri:

  • Token drift — Figma'da token değeri değişti ama platformdaki dosyada güncellenmedi
  • Component drift — Figma component'i değişti (yeni variant, spacing değişikliği vb.) ama koddaki implementasyon güncellenmedi
  • Platform gap — Bir platform güncellenmiş ama diğerleri eski kalmış
  • Cross-platform inconsistency — Aynı token farklı platformlarda farklı değerde

REST API veya Figma access token gerekmez.

Önemli: Bu skill'in tüm karşılaştırma ve drift tespiti AI agent tarafından yapılır. MCP araçları (figma_get_variables, figma_get_styles, figma_check_design_parity) ham veri sağlar; drift analizi, raporlama ve düzeltme önerileri AI'ın çıkarımlarıdır.

Prerequisites

  • F-MCP Bridge plugin bağlı olmalı
  • Tercihen .figma-mappings.json mevcut olmalı (code-design-mapper skill'i ile oluşturulur)
  • Token dosyaları mevcut olmalı (design-token-pipeline skill'i ile oluşturulur)

F-MCP skill koordinasyonu

Bu skill’in yeri: Kod ve Figma parity doğrulaması — tipik olarak implement-design veya mevcut kod tabanı üzerinde sonra çalıştırılır; handoff/implement öncesi “mutlaka drift” diye zorunlu değildir (henüz kod yoksa anlamsız olur).

Read the full file on GitHub · 410 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. 7d ago First seen · 410 lines · 121 tokens per session scan A a3bcd4718949

Subscribe to this mod's changes

design-drift-detector is a skill published in the GitHub repository atezer/FMCP (9 stars, last pushed 1mo ago), licensed MIT. It adds 121 tokens to every session and 4,871 once invoked, about $0.0006 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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