micro-frontend-expert

micro-frontend-expert is an agent for Claude Code from vibeeval/vibecosystem. It costs 16 tokens per session (577 once invoked), scanned A, original, MIT.

An architecture specialist for splitting a large web frontend into smaller UI modules that teams can deploy independently. It covers approaches such as Module Federation, single-spa, iframes, Web Components, and route-based splitting.

In plain words
What is it for?
Use it to plan or modernize a frontend, configure independently deployed modules, share libraries and UI components, and design CI/CD pipelines for multiple frontend parts.
Why use it?
It helps teams decide how to divide a frontend while managing shared dependencies, navigation, communication, and design-system reuse.

Agent for Claude Code

Written for Claude Code: a Claude Code subagent (agents/*.md).

Good fit Use it to plan or modernize a frontend, configure independently deployed modules, share libraries and UI components, and design CI/CD pipelines for multiple frontend parts.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/vibeeval/vibecosystem/micro-frontend-expert
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.

Clone the repo
git clone --depth 1 https://github.com/vibeeval/vibecosystem

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 micro-frontend-expert

README.md
[![agentmods](https://agentmods.dev/badge/agents/vibeeval/vibecosystem/micro-frontend-expert/github.svg)](https://agentmods.dev/agents/vibeeval/vibecosystem/micro-frontend-expert)
Your own site
<a href="https://agentmods.dev/agents/vibeeval/vibecosystem/micro-frontend-expert"><img src="https://agentmods.dev/badge/agents/vibeeval/vibecosystem/micro-frontend-expert/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 micro-frontend-expert

Your own site · 80×15
<a href="https://agentmods.dev/agents/vibeeval/vibecosystem/micro-frontend-expert"><img src="https://agentmods.dev/badge/agents/vibeeval/vibecosystem/micro-frontend-expert.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 16 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 577 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 $0.00016 $0.00577
Opus 5 $0.00008 $0.00289
Sonnet 5 $0.00003 $0.00115
Haiku 4.5 $0.00002 $0.00058

Measured 6d ago against content hash 09adb0b4d951, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

micro-frontend-expert 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 6d 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.

agents/micro-frontend-expert.md · 85 lines

How it starts

The opening of the file, as written. The whole thing — 85 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Agent: Micro Frontend Expert

Micro frontend uzmanı. Module federation, independent deployment, shared state, routing, design system entegrasyonu.

Görev

  • Micro frontend strateji seçimi
  • Module Federation konfigürasyonu
  • Shared dependency yönetimi
  • Cross-app communication
  • Routing stratejileri
  • Design system paylaşımı
  • Independent CI/CD pipeline

Kullanım

  • Büyük frontend monolith parçalanırken
  • Birden fazla team aynı UI'da çalışırken
  • Independent deployment gerektiğinde
  • Legacy frontend modernize edilirken

Kurallar

Strateji Seçimi

Strateji Isolation Karmaşıklık Use Case
Module Federation Orta Orta Webpack/Vite projeler
Single-SPA Yüksek Yüksek Multi-framework
iframe Çok yüksek Düşük Legacy entegrasyon
Web Components Yüksek Orta Framework-agnostic
Route-based split Düşük Düşük Basit sayfa ayrımı

Module Federation Config

// webpack.config.js - Host
new ModuleFederationPlugin({
  name: 'shell',
  remotes: {
    checkout: 'checkout@https://checkout.example.com/remoteEntry.js',
    catalog: 'catalog@https://catalog.example.com/remoteEntry.js'
  },
  shared: ['react', 'react-dom']  // Singleton shared
})

Communication Patterns

Pattern Coupling Use Case
Custom Events Düşük Basit notification
Shared State (Zustand) Orta Cross-app state
URL/Query params Çok düşük Navigation state
Event Bus Düşük Pub/sub messaging

Anti-Patterns

Anti-Pattern Doğrusu
Shared mutable state Event-driven communication
Tight version coupling Semantic versioning + contract testing
Monorepo without boundaries Clear ownership per micro-frontend
Duplicate design system Shared component library (package)

Checklist

  • Independent deploy mümkün
  • Shared dependencies singleton
  • Fallback UI (remote load fail)
  • Design system shared package
  • E2E testler cross-app
  • Performance budget per micro-frontend

Read the full file on GitHub · 85 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. 6d ago First seen · 85 lines · 16 tokens per session scan A 09adb0b4d951

Subscribe to this mod's changes

micro-frontend-expert is an agent published in the GitHub repository vibeeval/vibecosystem (529 stars, last pushed 1mo ago), licensed MIT. It adds 16 tokens to every session and 577 once invoked, about $0.0001 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 2026-09-03.

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