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+# News API - 개발자 가이드
+
+외부 프론트엔드 시스템에서 Site11 News API를 통합하기 위한 실용적인 가이드입니다.
+
+---
+
+## 📌 Quick Start
+
+### Base URL
+```
+http://localhost:8050/api/v1
+```
+
+### 첫 API 호출
+
+```bash
+# 한국어 최신 기사 5개 조회
+curl 'http://localhost:8050/api/v1/ko/articles/latest?limit=5'
+```
+
+```javascript
+// JavaScript/TypeScript
+const response = await fetch('http://localhost:8050/api/v1/ko/articles/latest?limit=5');
+const articles = await response.json();
+console.log(articles);
+```
+
+### 인증
+현재 버전은 인증이 필요하지 않습니다. (Public API)
+
+---
+
+## 🌍 지원 언어
+
+| 언어 코드 | 언어 |
+|----------|------|
+| `ko` | 한국어 |
+| `en` | English |
+| `zh_cn` | 简体中文 |
+| `zh_tw` | 繁體中文 |
+| `ja` | 日本語 |
+| `fr` | Français |
+| `de` | Deutsch |
+| `es` | Español |
+| `it` | Italiano |
+
+---
+
+## 📰 Articles API
+
+### 1. 기사 목록 조회
+
+가장 기본적인 엔드포인트입니다. 페이지네이션을 지원합니다.
+
+```http
+GET /api/v1/{language}/articles
+```
+
+**Query Parameters:**
+- `page` (int, default: 1) - 페이지 번호
+- `page_size` (int, default: 20, max: 100) - 페이지당 항목 수
+- `category` (string, optional) - 카테고리 필터
+
+**Example Request:**
+```bash
+curl 'http://localhost:8050/api/v1/ko/articles?page=1&page_size=10&category=technology'
+```
+
+```typescript
+// TypeScript + Axios
+import axios from 'axios';
+
+const getArticles = async (
+  language: string,
+  page: number = 1,
+  pageSize: number = 20,
+  category?: string
+) => {
+  const { data } = await axios.get(`/api/v1/${language}/articles`, {
+    params: { page, page_size: pageSize, category }
+  });
+  return data;
+};
+
+// 사용 예시
+const articles = await getArticles('ko', 1, 10, 'technology');
+```
+
+**Response:**
+```json
+{
+  "total": 1523,
+  "page": 1,
+  "page_size": 10,
+  "total_pages": 153,
+  "articles": [
+    {
+      "id": "507f1f77bcf86cd799439011",
+      "news_id": "uuid-string",
+      "title": "AI 기술의 미래",
+      "summary": "인공지능 기술이 우리 생활에 미치는 영향...",
+      "language": "ko",
+      "created_at": "2024-01-15T10:30:00Z",
+      "categories": ["technology", "ai"],
+      "images": ["https://example.com/image1.png"],
+      "source_keyword": "AI기술",
+      "subtopics": [
+        {
+          "title": "AI의 발전",
+          "content": [
+            "AI 기술은 최근 몇 년간 급속도로 발전했습니다.",
+            "특히 대형 언어 모델의 등장으로..."
+          ]
+        }
+      ],
+      "entities": {
+        "people": ["샘 알트만", "일론 머스크"],
+        "organizations": ["OpenAI", "Google"],
+        "countries": ["미국", "한국"]
+      },
+      "references": [
+        {
+          "title": "원문 기사 제목",
+          "link": "https://source.com/article",
+          "source": "TechCrunch",
+          "published": "2024-01-15"
+        }
+      ]
+    }
+  ]
+}
+```
+
+---
+
+### 2. 최신 기사 조회
+
+가장 최근에 생성된 기사를 조회합니다.
+
+```http
+GET /api/v1/{language}/articles/latest
+```
+
+**Query Parameters:**
+- `limit` (int, default: 10, max: 50) - 조회할 기사 수
+
+**Example Request:**
+```bash
+curl 'http://localhost:8050/api/v1/en/articles/latest?limit=5'
+```
+
+```javascript
+// React Hook 예시
+import { useState, useEffect } from 'react';
+
+function useLatestArticles(language, limit = 10) {
+  const [articles, setArticles] = useState([]);
+  const [loading, setLoading] = useState(true);
+
+  useEffect(() => {
+    fetch(`/api/v1/${language}/articles/latest?limit=${limit}`)
+      .then(res => res.json())
+      .then(data => {
+        setArticles(data);
+        setLoading(false);
+      });
+  }, [language, limit]);
+
+  return { articles, loading };
+}
+
+// 컴포넌트에서 사용
+function LatestNews() {
+  const { articles, loading } = useLatestArticles('ko', 5);
+
+  if (loading) return <div>Loading...</div>;
+
+  return (
+    <div>
+      {articles.map(article => (
+        <div key={article.id}>
+          <h2>{article.title}</h2>
+          <p>{article.summary}</p>
+        </div>
+      ))}
+    </div>
+  );
+}
+```
+
+**Response:**
+```json
+[
+  {
+    "id": "507f1f77bcf86cd799439011",
+    "news_id": "uuid-string",
+    "title": "Latest News Title",
+    "summary": "Summary text...",
+    "language": "en",
+    "categories": ["business"],
+    "images": ["https://example.com/image.png"],
+    "created_at": "2024-01-15T10:30:00Z",
+    "source_keyword": "business"
+  }
+]
+```
+
+---
+
+### 3. 기사 검색
+
+키워드로 기사를 검색합니다.
+
+```http
+GET /api/v1/{language}/articles/search
+```
+
+**Query Parameters:**
+- `q` (string, required) - 검색 키워드
+- `page` (int, default: 1) - 페이지 번호
+- `page_size` (int, default: 20, max: 100) - 페이지당 항목 수
+
+**Example Request:**
+```bash
+curl 'http://localhost:8050/api/v1/ko/articles/search?q=AI&page=1&page_size=10'
+```
+
+```typescript
+// Next.js API Route 예시
+// pages/api/search.ts
+import type { NextApiRequest, NextApiResponse } from 'next';
+import axios from 'axios';
+
+export default async function handler(
+  req: NextApiRequest,
+  res: NextApiResponse
+) {
+  const { q, language = 'ko', page = 1 } = req.query;
+
+  try {
+    const { data } = await axios.get(
+      `http://localhost:8050/api/v1/${language}/articles/search`,
+      {
+        params: { q, page, page_size: 20 }
+      }
+    );
+    res.status(200).json(data);
+  } catch (error) {
+    res.status(500).json({ error: 'Search failed' });
+  }
+}
+```
+
+**Response:**
+동일한 `ArticleList` 형식 (기사 목록 조회와 동일)
+
+---
+
+### 4. 기사 상세 조회
+
+특정 기사의 전체 내용을 조회합니다.
+
+```http
+GET /api/v1/{language}/articles/{article_id}
+```
+
+**Example Request:**
+```bash
+curl 'http://localhost:8050/api/v1/ko/articles/507f1f77bcf86cd799439011'
+```
+
+```typescript
+// React Query 사용 예시
+import { useQuery } from '@tanstack/react-query';
+import axios from 'axios';
+
+interface ArticleDetailProps {
+  articleId: string;
+  language: string;
+}
+
+function ArticleDetail({ articleId, language }: ArticleDetailProps) {
+  const { data: article, isLoading, error } = useQuery({
+    queryKey: ['article', articleId, language],
+    queryFn: async () => {
+      const { data } = await axios.get(
+        `/api/v1/${language}/articles/${articleId}`
+      );
+      return data;
+    }
+  });
+
+  if (isLoading) return <div>Loading...</div>;
+  if (error) return <div>Error loading article</div>;
+
+  return (
+    <article>
+      <h1>{article.title}</h1>
+      <p className="summary">{article.summary}</p>
+
+      {article.images.length > 0 && (
+        <img src={article.images[0]} alt={article.title} />
+      )}
+
+      {article.subtopics.map((subtopic, idx) => (
+        <section key={idx}>
+          <h2>{subtopic.title}</h2>
+          {subtopic.content.map((paragraph, pIdx) => (
+            <p key={pIdx}>{paragraph}</p>
+          ))}
+        </section>
+      ))}
+
+      {article.references.length > 0 && (
+        <div className="references">
+          <h3>참고 자료</h3>
+          <ul>
+            {article.references.map((ref, idx) => (
+              <li key={idx}>
+                <a href={ref.link} target="_blank" rel="noopener">
+                  {ref.title} - {ref.source}
+                </a>
+              </li>
+            ))}
+          </ul>
+        </div>
+      )}
+    </article>
+  );
+}
+```
+
+**Response:**
+완전한 `Article` 객체 (기사 목록의 단일 항목과 동일한 구조)
+
+---
+
+### 5. 카테고리 목록 조회
+
+해당 언어에서 사용 가능한 모든 카테고리를 조회합니다.
+
+```http
+GET /api/v1/{language}/categories
+```
+
+**Example Request:**
+```bash
+curl 'http://localhost:8050/api/v1/ko/categories'
+```
+
+```javascript
+// 카테고리 필터 컴포넌트
+function CategoryFilter({ language, onSelectCategory }) {
+  const [categories, setCategories] = useState([]);
+
+  useEffect(() => {
+    fetch(`/api/v1/${language}/categories`)
+      .then(res => res.json())
+      .then(setCategories);
+  }, [language]);
+
+  return (
+    <select onChange={(e) => onSelectCategory(e.target.value)}>
+      <option value="">All Categories</option>
+      {categories.map(cat => (
+        <option key={cat} value={cat}>{cat}</option>
+      ))}
+    </select>
+  );
+}
+```
+
+**Response:**
+```json
+[
+  "technology",
+  "business",
+  "politics",
+  "sports",
+  "entertainment"
+]
+```
+
+---
+
+## 🏢 Outlets API
+
+Outlets은 **인물(people)**, **토픽(topics)**, **기업(companies)** 3가지 카테고리로 분류됩니다.
+
+### 1. Outlet 목록 조회
+
+모든 Outlet 또는 특정 카테고리의 Outlet을 조회합니다.
+
+```http
+GET /api/v1/outlets
+```
+
+**Query Parameters:**
+- `category` (string, optional) - `people`, `topics`, `companies` 중 하나
+
+**Example Request:**
+```bash
+# 모든 Outlet 조회
+curl 'http://localhost:8050/api/v1/outlets'
+
+# 인물만 조회
+curl 'http://localhost:8050/api/v1/outlets?category=people'
+```
+
+```typescript
+// TypeScript 타입 정의
+interface OutletTranslations {
+  ko?: string;
+  en?: string;
+  zh_cn?: string;
+  zh_tw?: string;
+  ja?: string;
+  fr?: string;
+  de?: string;
+  es?: string;
+  it?: string;
+}
+
+interface Outlet {
+  source_keyword: string;
+  category: 'people' | 'topics' | 'companies';
+  name_translations: OutletTranslations;
+  description_translations: OutletTranslations;
+  image?: string;
+
+  // Deprecated (하위 호환성)
+  name?: string;
+  description?: string;
+}
+
+// 사용 예시
+const getOutlets = async (category?: string): Promise<Outlet[]> => {
+  const { data } = await axios.get('/api/v1/outlets', {
+    params: category ? { category } : {}
+  });
+
+  // category 지정 시: { people: [...] } 형식
+  // 전체 조회 시: { people: [...], topics: [...], companies: [...] }
+  return category ? data[category] : data;
+};
+```
+
+**Response (category=people):**
+```json
+{
+  "people": [
+    {
+      "source_keyword": "온유",
+      "category": "people",
+      "name_translations": {
+        "ko": "온유",
+        "en": "Onew",
+        "ja": "オニュ"
+      },
+      "description_translations": {
+        "ko": "샤이니 리더, 뮤지컬 배우",
+        "en": "SHINee leader, musical actor",
+        "ja": "SHINeeのリーダー、ミュージカル俳優"
+      },
+      "image": "https://example.com/onew.jpg"
+    }
+  ]
+}
+```
+
+**Response (전체 조회):**
+```json
+{
+  "people": [...],
+  "topics": [...],
+  "companies": [...]
+}
+```
+
+---
+
+### 2. Outlet 상세 조회
+
+특정 Outlet의 정보를 조회합니다.
+
+```http
+GET /api/v1/outlets/{outlet_id}
+```
+
+**Example Request:**
+```bash
+curl 'http://localhost:8050/api/v1/outlets/507f1f77bcf86cd799439011'
+```
+
+**Response:**
+```json
+{
+  "source_keyword": "온유",
+  "category": "people",
+  "name_translations": {
+    "ko": "온유",
+    "en": "Onew",
+    "ja": "オニュ"
+  },
+  "description_translations": {
+    "ko": "샤이니 리더, 뮤지컬 배우",
+    "en": "SHINee leader, musical actor"
+  },
+  "image": "https://example.com/onew.jpg"
+}
+```
+
+---
+
+### 3. Outlet별 기사 조회 ⭐ (중요)
+
+특정 Outlet 관련 기사를 동적으로 조회합니다. `source_keyword` 기반으로 실시간 쿼리합니다.
+
+```http
+GET /api/v1/{language}/outlets/{outlet_id}/articles
+```
+
+**Query Parameters:**
+- `page` (int, default: 1) - 페이지 번호
+- `page_size` (int, default: 20, max: 100) - 페이지당 항목 수
+
+**Example Request:**
+```bash
+# 한국어로 '온유' 관련 기사 조회
+curl 'http://localhost:8050/api/v1/ko/outlets/507f1f77bcf86cd799439011/articles?page_size=10'
+```
+
+```typescript
+// React 컴포넌트 예시
+function OutletArticles({ outletId, language }: { outletId: string, language: string }) {
+  const [articles, setArticles] = useState<ArticleList | null>(null);
+  const [page, setPage] = useState(1);
+
+  useEffect(() => {
+    const fetchArticles = async () => {
+      const { data } = await axios.get(
+        `/api/v1/${language}/outlets/${outletId}/articles`,
+        { params: { page, page_size: 20 } }
+      );
+      setArticles(data);
+    };
+
+    fetchArticles();
+  }, [outletId, language, page]);
+
+  if (!articles) return <div>Loading...</div>;
+
+  return (
+    <div>
+      <h2>총 {articles.total}개의 기사</h2>
+      {articles.articles.map(article => (
+        <ArticleCard key={article.id} article={article} />
+      ))}
+
+      {/* 페이지네이션 */}
+      <Pagination
+        current={page}
+        total={articles.total_pages}
+        onChange={setPage}
+      />
+    </div>
+  );
+}
+```
+
+**Response:**
+동일한 `ArticleList` 형식
+
+---
+
+## 💬 Comments API
+
+### 1. 댓글 목록 조회
+
+특정 기사의 댓글을 조회합니다.
+
+```http
+GET /api/v1/comments?articleId={article_id}
+```
+
+**Example Request:**
+```bash
+curl 'http://localhost:8050/api/v1/comments?articleId=507f1f77bcf86cd799439011'
+```
+
+```typescript
+// React Hook
+function useComments(articleId: string) {
+  const [comments, setComments] = useState<Comment[]>([]);
+
+  useEffect(() => {
+    fetch(`/api/v1/comments?articleId=${articleId}`)
+      .then(res => res.json())
+      .then(data => setComments(data.comments));
+  }, [articleId]);
+
+  return comments;
+}
+```
+
+**Response:**
+```json
+{
+  "comments": [
+    {
+      "id": "comment-id-1",
+      "articleId": "507f1f77bcf86cd799439011",
+      "nickname": "독자1",
+      "content": "좋은 기사 감사합니다!",
+      "createdAt": "2024-01-15T11:20:00Z"
+    }
+  ],
+  "total": 42
+}
+```
+
+---
+
+### 2. 댓글 작성
+
+새로운 댓글을 작성합니다.
+
+```http
+POST /api/v1/comments
+```
+
+**Request Body:**
+```json
+{
+  "articleId": "507f1f77bcf86cd799439011",
+  "nickname": "독자1",
+  "content": "좋은 기사 감사합니다!"
+}
+```
+
+**Example Request:**
+```bash
+curl -X POST 'http://localhost:8050/api/v1/comments' \
+  -H 'Content-Type: application/json' \
+  -d '{
+    "articleId": "507f1f77bcf86cd799439011",
+    "nickname": "독자1",
+    "content": "좋은 기사입니다!"
+  }'
+```
+
+```typescript
+// React Form 예시
+function CommentForm({ articleId }: { articleId: string }) {
+  const [nickname, setNickname] = useState('');
+  const [content, setContent] = useState('');
+
+  const handleSubmit = async (e: React.FormEvent) => {
+    e.preventDefault();
+
+    try {
+      const { data } = await axios.post('/api/v1/comments', {
+        articleId,
+        nickname,
+        content
+      });
+
+      alert('댓글이 등록되었습니다!');
+      setNickname('');
+      setContent('');
+    } catch (error) {
+      alert('댓글 등록에 실패했습니다.');
+    }
+  };
+
+  return (
+    <form onSubmit={handleSubmit}>
+      <input
+        type="text"
+        placeholder="닉네임"
+        value={nickname}
+        onChange={e => setNickname(e.target.value)}
+        required
+      />
+      <textarea
+        placeholder="댓글 내용"
+        value={content}
+        onChange={e => setContent(e.target.value)}
+        required
+      />
+      <button type="submit">댓글 등록</button>
+    </form>
+  );
+}
+```
+
+**Response:**
+```json
+{
+  "id": "comment-id-new",
+  "articleId": "507f1f77bcf86cd799439011",
+  "nickname": "독자1",
+  "content": "좋은 기사입니다!",
+  "createdAt": "2024-01-15T12:00:00Z"
+}
+```
+
+---
+
+### 3. 댓글 수 조회
+
+기사의 총 댓글 수를 조회합니다.
+
+```http
+GET /api/v1/articles/{article_id}/comment-count
+```
+
+**Example Request:**
+```bash
+curl 'http://localhost:8050/api/v1/articles/507f1f77bcf86cd799439011/comment-count'
+```
+
+**Response:**
+```json
+{
+  "count": 42
+}
+```
+
+---
+
+## 📦 TypeScript 타입 정의
+
+전체 타입을 한 곳에 모아두고 재사용하세요.
+
+```typescript
+// types/news-api.ts
+
+// Article Types
+export interface Subtopic {
+  title: string;
+  content: string[];
+}
+
+export interface Reference {
+  title: string;
+  link: string;
+  source: string;
+  published?: string;
+}
+
+export interface Entities {
+  people: string[];
+  organizations: string[];
+  groups: string[];
+  countries: string[];
+  events: string[];
+}
+
+export interface Article {
+  id: string;
+  news_id: string;
+  title: string;
+  summary?: string;
+  created_at: string;
+  language: string;
+
+  // Content
+  subtopics: Subtopic[];
+  categories: string[];
+  entities?: Entities;
+
+  // Source
+  source_keyword?: string;
+  source_count?: number;
+  references: Reference[];
+
+  // Media
+  images: string[];
+  image_prompt?: string;
+
+  // Metadata
+  job_id?: string;
+  keyword_id?: string;
+  pipeline_stages: string[];
+  processing_time?: number;
+  translated_languages: string[];
+  ref_news_id?: string;
+  rss_guid?: string;
+}
+
+export interface ArticleList {
+  total: number;
+  page: number;
+  page_size: number;
+  total_pages: number;
+  articles: Article[];
+}
+
+export interface ArticleSummary {
+  id: string;
+  news_id: string;
+  title: string;
+  summary?: string;
+  language: string;
+  categories: string[];
+  images: string[];
+  created_at: string;
+  source_keyword?: string;
+}
+
+// Outlet Types
+export interface OutletTranslations {
+  ko?: string;
+  en?: string;
+  zh_cn?: string;
+  zh_tw?: string;
+  ja?: string;
+  fr?: string;
+  de?: string;
+  es?: string;
+  it?: string;
+}
+
+export interface Outlet {
+  source_keyword: string;
+  category: 'people' | 'topics' | 'companies';
+  name_translations: OutletTranslations;
+  description_translations: OutletTranslations;
+  image?: string;
+
+  // Deprecated
+  name?: string;
+  description?: string;
+}
+
+export interface OutletList {
+  people?: Outlet[];
+  topics?: Outlet[];
+  companies?: Outlet[];
+}
+
+// Comment Types
+export interface Comment {
+  id: string;
+  articleId: string;
+  nickname: string;
+  content: string;
+  createdAt: string;
+}
+
+export interface CommentCreate {
+  articleId: string;
+  nickname: string;
+  content: string;
+}
+
+export interface CommentList {
+  comments: Comment[];
+  total: number;
+}
+
+// Language Type
+export type Language = 'ko' | 'en' | 'zh_cn' | 'zh_tw' | 'ja' | 'fr' | 'de' | 'es' | 'it';
+```
+
+---
+
+## 🔧 Axios 인스턴스 설정
+
+API 클라이언트를 한 곳에서 관리하세요.
+
+```typescript
+// lib/api-client.ts
+import axios from 'axios';
+
+const apiClient = axios.create({
+  baseURL: process.env.NEXT_PUBLIC_NEWS_API_URL || 'http://localhost:8050/api/v1',
+  headers: {
+    'Content-Type': 'application/json'
+  },
+  timeout: 10000
+});
+
+// 요청 인터셉터 (로깅, 인증 등)
+apiClient.interceptors.request.use(
+  config => {
+    console.log(`[API] ${config.method?.toUpperCase()} ${config.url}`);
+    return config;
+  },
+  error => Promise.reject(error)
+);
+
+// 응답 인터셉터 (에러 처리)
+apiClient.interceptors.response.use(
+  response => response,
+  error => {
+    if (error.response) {
+      console.error('[API Error]', error.response.status, error.response.data);
+    }
+    return Promise.reject(error);
+  }
+);
+
+export default apiClient;
+```
+
+```typescript
+// lib/news-api.ts
+import apiClient from './api-client';
+import type { Article, ArticleList, Outlet, Comment, CommentCreate, Language } from '@/types/news-api';
+
+export const newsAPI = {
+  // Articles
+  getArticles: (language: Language, page = 1, pageSize = 20, category?: string) =>
+    apiClient.get<ArticleList>(`/${language}/articles`, {
+      params: { page, page_size: pageSize, category }
+    }),
+
+  getLatestArticles: (language: Language, limit = 10) =>
+    apiClient.get<Article[]>(`/${language}/articles/latest`, {
+      params: { limit }
+    }),
+
+  searchArticles: (language: Language, query: string, page = 1, pageSize = 20) =>
+    apiClient.get<ArticleList>(`/${language}/articles/search`, {
+      params: { q: query, page, page_size: pageSize }
+    }),
+
+  getArticleById: (language: Language, articleId: string) =>
+    apiClient.get<Article>(`/${language}/articles/${articleId}`),
+
+  getCategories: (language: Language) =>
+    apiClient.get<string[]>(`/${language}/categories`),
+
+  // Outlets
+  getOutlets: (category?: 'people' | 'topics' | 'companies') =>
+    apiClient.get<any>('/outlets', { params: category ? { category } : {} }),
+
+  getOutletById: (outletId: string) =>
+    apiClient.get<Outlet>(`/outlets/${outletId}`),
+
+  getOutletArticles: (language: Language, outletId: string, page = 1, pageSize = 20) =>
+    apiClient.get<ArticleList>(`/${language}/outlets/${outletId}/articles`, {
+      params: { page, page_size: pageSize }
+    }),
+
+  // Comments
+  getComments: (articleId: string) =>
+    apiClient.get<{ comments: Comment[], total: number }>('/comments', {
+      params: { articleId }
+    }),
+
+  createComment: (comment: CommentCreate) =>
+    apiClient.post<Comment>('/comments', comment),
+
+  getCommentCount: (articleId: string) =>
+    apiClient.get<{ count: number }>(`/articles/${articleId}/comment-count`)
+};
+```
+
+---
+
+## 🚀 실전 통합 예시
+
+### Next.js App Router 예시
+
+```typescript
+// app/articles/[lang]/page.tsx
+import { newsAPI } from '@/lib/news-api';
+import type { Language } from '@/types/news-api';
+
+interface PageProps {
+  params: { lang: Language };
+  searchParams: { page?: string; category?: string };
+}
+
+export default async function ArticlesPage({ params, searchParams }: PageProps) {
+  const page = parseInt(searchParams.page || '1');
+  const category = searchParams.category;
+
+  const { data } = await newsAPI.getArticles(params.lang, page, 20, category);
+
+  return (
+    <div>
+      <h1>Articles ({data.total})</h1>
+      <div className="grid grid-cols-3 gap-4">
+        {data.articles.map(article => (
+          <ArticleCard key={article.id} article={article} />
+        ))}
+      </div>
+      <Pagination
+        current={page}
+        total={data.total_pages}
+        baseUrl={`/articles/${params.lang}`}
+      />
+    </div>
+  );
+}
+```
+
+### React Query 사용 예시
+
+```typescript
+// hooks/useArticles.ts
+import { useQuery } from '@tanstack/react-query';
+import { newsAPI } from '@/lib/news-api';
+import type { Language } from '@/types/news-api';
+
+export function useArticles(
+  language: Language,
+  page: number,
+  pageSize: number,
+  category?: string
+) {
+  return useQuery({
+    queryKey: ['articles', language, page, pageSize, category],
+    queryFn: async () => {
+      const { data } = await newsAPI.getArticles(language, page, pageSize, category);
+      return data;
+    },
+    staleTime: 5 * 60 * 1000, // 5분
+    cacheTime: 10 * 60 * 1000 // 10분
+  });
+}
+
+export function useLatestArticles(language: Language, limit = 10) {
+  return useQuery({
+    queryKey: ['articles', 'latest', language, limit],
+    queryFn: async () => {
+      const { data } = await newsAPI.getLatestArticles(language, limit);
+      return data;
+    },
+    staleTime: 1 * 60 * 1000 // 1분
+  });
+}
+
+export function useOutletArticles(
+  language: Language,
+  outletId: string,
+  page: number,
+  pageSize: number
+) {
+  return useQuery({
+    queryKey: ['outlet-articles', language, outletId, page, pageSize],
+    queryFn: async () => {
+      const { data } = await newsAPI.getOutletArticles(language, outletId, page, pageSize);
+      return data;
+    }
+  });
+}
+```
+
+```typescript
+// 컴포넌트에서 사용
+function ArticlesList() {
+  const [page, setPage] = useState(1);
+  const { data, isLoading, error } = useArticles('ko', page, 20);
+
+  if (isLoading) return <Skeleton />;
+  if (error) return <ErrorMessage />;
+
+  return (
+    <div>
+      {data.articles.map(article => (
+        <ArticleCard key={article.id} {...article} />
+      ))}
+    </div>
+  );
+}
+```
+
+---
+
+## 🎨 무한 스크롤 구현
+
+```typescript
+// components/InfiniteArticleList.tsx
+import { useInfiniteQuery } from '@tanstack/react-query';
+import { useInView } from 'react-intersection-observer';
+import { newsAPI } from '@/lib/news-api';
+
+function InfiniteArticleList({ language }: { language: Language }) {
+  const { ref, inView } = useInView();
+
+  const {
+    data,
+    fetchNextPage,
+    hasNextPage,
+    isFetchingNextPage
+  } = useInfiniteQuery({
+    queryKey: ['articles', 'infinite', language],
+    queryFn: async ({ pageParam = 1 }) => {
+      const { data } = await newsAPI.getArticles(language, pageParam, 20);
+      return data;
+    },
+    getNextPageParam: (lastPage) => {
+      return lastPage.page < lastPage.total_pages
+        ? lastPage.page + 1
+        : undefined;
+    }
+  });
+
+  useEffect(() => {
+    if (inView && hasNextPage) {
+      fetchNextPage();
+    }
+  }, [inView, hasNextPage, fetchNextPage]);
+
+  return (
+    <div>
+      {data?.pages.map((page, i) => (
+        <div key={i}>
+          {page.articles.map(article => (
+            <ArticleCard key={article.id} article={article} />
+          ))}
+        </div>
+      ))}
+
+      {/* 트리거 요소 */}
+      <div ref={ref} className="h-10">
+        {isFetchingNextPage && <Spinner />}
+      </div>
+    </div>
+  );
+}
+```
+
+---
+
+## ⚠️ 에러 처리
+
+### HTTP 상태 코드
+
+| 코드 | 의미 | 원인 |
+|------|------|------|
+| 200 | 성공 | 정상 응답 |
+| 400 | Bad Request | 잘못된 언어 코드, 파라미터 오류 |
+| 404 | Not Found | 존재하지 않는 기사/outlet ID |
+| 500 | Server Error | 서버 내부 오류 |
+
+### 에러 응답 형식
+
+```json
+{
+  "detail": "Unsupported language: kr"
+}
+```
+
+### 에러 처리 예시
+
+```typescript
+try {
+  const { data } = await newsAPI.getArticleById('ko', articleId);
+  return data;
+} catch (error) {
+  if (axios.isAxiosError(error)) {
+    if (error.response?.status === 404) {
+      console.error('기사를 찾을 수 없습니다.');
+    } else if (error.response?.status === 400) {
+      console.error('잘못된 요청:', error.response.data.detail);
+    } else {
+      console.error('서버 오류가 발생했습니다.');
+    }
+  }
+  throw error;
+}
+```
+
+---
+
+## 🎯 성능 최적화 팁
+
+### 1. 클라이언트 사이드 캐싱
+
+```typescript
+// React Query 설정
+import { QueryClient, QueryClientProvider } from '@tanstack/react-query';
+
+const queryClient = new QueryClient({
+  defaultOptions: {
+    queries: {
+      staleTime: 5 * 60 * 1000, // 5분간 fresh 상태 유지
+      cacheTime: 10 * 60 * 1000, // 10분간 캐시 보관
+      refetchOnWindowFocus: false,
+      retry: 1
+    }
+  }
+});
+
+function App() {
+  return (
+    <QueryClientProvider client={queryClient}>
+      <YourApp />
+    </QueryClientProvider>
+  );
+}
+```
+
+### 2. 이미지 최적화
+
+```typescript
+// Next.js Image 컴포넌트 사용
+import Image from 'next/image';
+
+function ArticleImage({ src, alt }: { src: string; alt: string }) {
+  return (
+    <Image
+      src={src}
+      alt={alt}
+      width={800}
+      height={450}
+      loading="lazy"
+      placeholder="blur"
+      blurDataURL="/placeholder.jpg"
+    />
+  );
+}
+```
+
+### 3. 페이지네이션 프리페칭
+
+```typescript
+// 다음 페이지 미리 로드
+const { data } = useArticles('ko', page, 20);
+
+// 다음 페이지 프리페칭
+useEffect(() => {
+  if (data && page < data.total_pages) {
+    queryClient.prefetchQuery({
+      queryKey: ['articles', 'ko', page + 1, 20],
+      queryFn: () => newsAPI.getArticles('ko', page + 1, 20)
+    });
+  }
+}, [page, data]);
+```
+
+### 4. 요청 최적화
+
+```typescript
+// Debounce 검색
+import { useDebouncedValue } from '@/hooks/useDebouncedValue';
+
+function SearchArticles() {
+  const [query, setQuery] = useState('');
+  const debouncedQuery = useDebouncedValue(query, 500);
+
+  const { data } = useQuery({
+    queryKey: ['articles', 'search', debouncedQuery],
+    queryFn: () => newsAPI.searchArticles('ko', debouncedQuery, 1, 20),
+    enabled: debouncedQuery.length > 0
+  });
+
+  return (
+    <input
+      value={query}
+      onChange={e => setQuery(e.target.value)}
+      placeholder="검색..."
+    />
+  );
+}
+```
+
+---
+
+## 📚 API Reference (Quick Reference)
+
+| Method | Endpoint | 설명 | 파라미터 |
+|--------|----------|------|---------|
+| **Articles** |
+| GET | `/{lang}/articles` | 기사 목록 | page, page_size, category |
+| GET | `/{lang}/articles/latest` | 최신 기사 | limit |
+| GET | `/{lang}/articles/search` | 기사 검색 | q, page, page_size |
+| GET | `/{lang}/articles/{id}` | 기사 상세 | - |
+| GET | `/{lang}/categories` | 카테고리 목록 | - |
+| **Outlets** |
+| GET | `/outlets` | Outlet 목록 | category |
+| GET | `/outlets/{id}` | Outlet 상세 | - |
+| GET | `/{lang}/outlets/{id}/articles` | Outlet별 기사 | page, page_size |
+| **Comments** |
+| GET | `/comments` | 댓글 목록 | articleId |
+| POST | `/comments` | 댓글 작성 | body: CommentCreate |
+| GET | `/articles/{id}/comment-count` | 댓글 수 | - |
+
+---
+
+## 🛠️ 개발 환경 설정
+
+### 환경 변수
+
+```env
+# .env.local (Next.js)
+NEXT_PUBLIC_NEWS_API_URL=http://localhost:8050/api/v1
+
+# .env (React)
+REACT_APP_NEWS_API_URL=http://localhost:8050/api/v1
+```
+
+### CORS 설정
+
+개발 환경에서 CORS 이슈가 발생하면 프록시 설정:
+
+```javascript
+// next.config.js
+module.exports = {
+  async rewrites() {
+    return [
+      {
+        source: '/api/v1/:path*',
+        destination: 'http://localhost:8050/api/v1/:path*'
+      }
+    ];
+  }
+};
+```
+
+---
+
+## 📞 지원 및 문의
+
+- **Swagger UI**: `http://localhost:8050/docs`
+- **ReDoc**: `http://localhost:8050/redoc`
+- **GitHub Issues**: [프로젝트 저장소 Issues](https://github.com/your-org/site11)
+
+---
+
+**마지막 업데이트**: 2024-01-15
+**API 버전**: v1.1.0