12 Factor App

---
name: 12-factor-app
description: "Professional 12 Factor App Expert skill. Build performant, secure, and scalable backend logic and RESTful or GraphQL APIs."
category: backend
tags: [backend, api, database, logic, server]
complexity: advanced
risk: low
compatibility: [claude-code, antigravity, gemini-cli, cursor, copilot, codex-cli, autohand, kiro]
source: antigravity-official
version: "1.0.0"
date_added: "2026-07-10"
last_updated: "2026-07-10"
---

# 12 Factor App Expert

## Purpose
Manage and implement 12 Factor App Expert requirements efficiently within enterprise applications.

## Core Concepts
Detailed operational framework for 12 Factor App Expert:

### 1️⃣ Overview and Strategy
Understanding boundaries, rules, and best practices for the 12-factor-app feature domain.

### 2️⃣ Code Implementation Reference
```javascript
// Express route handler
app.get('/api/resource', (req, res) => {
  res.json({ success: true, data: [] });
});
```

### 3️⃣ Checklist & Validation Rules
- [ ] Integration validation checklist completed.
- [ ] Code conventions and naming rules followed.
- [ ] Strict type safety constraints verified.
- [ ] Security standards checked.

## Outputs
1. System integration pattern definitions.
2. Code templates and examples.
3. Test validation checklists.