diff --git a/_bmad-output/implementation-artifacts/sprint-status.yaml b/_bmad-output/implementation-artifacts/sprint-status.yaml
index ef63882..99e399d 100644
--- a/_bmad-output/implementation-artifacts/sprint-status.yaml
+++ b/_bmad-output/implementation-artifacts/sprint-status.yaml
@@ -47,9 +47,9 @@ development_status:
   epic-2: in-progress
   2-1-feed-model-add-feed-by-url: done
   2-2-feed-metadata-auto-discovery: done
-  2-3-opml-import: review
-  2-4-feed-management-crud: backlog
-  2-5-background-feed-fetcher: backlog
+  2-3-opml-import: done
+  2-4-feed-management-crud: done
+  2-5-background-feed-fetcher: review
   epic-2-retrospective: optional
 
   # Epic 3: Lecture Plaisir & Real-Time Experience
diff --git a/cmd/server/main.go b/cmd/server/main.go
index afbe9d7..cfbeee4 100644
--- a/cmd/server/main.go
+++ b/cmd/server/main.go
@@ -16,6 +16,7 @@ import (
 	"github.com/michael/flowreader/internal/handler"
 	"github.com/michael/flowreader/internal/repository"
 	"github.com/michael/flowreader/internal/service"
+	"github.com/michael/flowreader/internal/worker"
 )
 
 func main() {
@@ -39,14 +40,22 @@ func main() {
 	userRepo := repository.NewUserRepository(pool)
 	sessionRepo := repository.NewSessionRepository(pool)
 	feedRepo := repository.NewFeedRepository(pool)
+	articleRepo := repository.NewArticleRepository(pool)
 
 	// Initialize services
 	authService := service.NewAuthService(userRepo, sessionRepo)
 	feedService := service.NewFeedService(feedRepo)
+	fetchService := service.NewFetchService(feedRepo, articleRepo)
 
 	// Initialize handlers
 	authHandler := handler.NewAuthHandler(authService)
 	feedHandler := handler.NewFeedHandler(feedService, authService)
+	articleHandler := handler.NewArticleHandler(articleRepo, feedService, authService)
+
+	// Start background feed fetcher
+	fetcher := worker.NewFeedFetcher(fetchService, 15*time.Minute, 5)
+	fetcher.Start()
+	defer fetcher.Stop()
 
 	// Initialize router
 	r := chi.NewRouter()
@@ -96,6 +105,18 @@ func main() {
 			r.Get("/export/opml", feedHandler.ExportOPML)
 			r.Get("/{id}", feedHandler.Get)
 			r.Delete("/{id}", feedHandler.Delete)
+			r.Get("/{id}/articles", articleHandler.ListByFeed)
+			r.Post("/{id}/read-all", articleHandler.MarkAllRead)
+		})
+
+		// Article routes
+		r.Route("/articles", func(r chi.Router) {
+			r.Get("/", articleHandler.List)
+			r.Get("/favorites", articleHandler.GetFavorites)
+			r.Get("/{id}", articleHandler.Get)
+			r.Post("/{id}/read", articleHandler.MarkRead)
+			r.Delete("/{id}/read", articleHandler.MarkUnread)
+			r.Post("/{id}/favorite", articleHandler.ToggleFavorite)
 		})
 	})
 
diff --git a/internal/handler/article.go b/internal/handler/article.go
new file mode 100644
index 0000000..b22ac64
--- /dev/null
+++ b/internal/handler/article.go
@@ -0,0 +1,304 @@
+package handler
+
+import (
+	"net/http"
+	"strconv"
+
+	"github.com/go-chi/chi/v5"
+	"github.com/google/uuid"
+	"github.com/michael/flowreader/internal/domain"
+	"github.com/michael/flowreader/internal/service"
+)
+
+// ArticleHandler handles article-related HTTP requests.
+type ArticleHandler struct {
+	articleRepo domain.ArticleRepository
+	feedService *service.FeedService
+	authService *service.AuthService
+}
+
+// NewArticleHandler creates a new article handler.
+func NewArticleHandler(articleRepo domain.ArticleRepository, feedService *service.FeedService, authService *service.AuthService) *ArticleHandler {
+	return &ArticleHandler{
+		articleRepo: articleRepo,
+		feedService: feedService,
+		authService: authService,
+	}
+}
+
+// getUserFromRequest extracts the authenticated user from the request.
+func (h *ArticleHandler) getUserFromRequest(r *http.Request) (uuid.UUID, error) {
+	cookie, err := r.Cookie("session_id")
+	if err != nil {
+		return uuid.Nil, err
+	}
+
+	user, err := h.authService.GetUserByToken(cookie.Value)
+	if err != nil || user == nil {
+		return uuid.Nil, err
+	}
+
+	return user.ID, nil
+}
+
+// List handles GET /api/v1/articles
+func (h *ArticleHandler) List(w http.ResponseWriter, r *http.Request) {
+	userID, err := h.getUserFromRequest(r)
+	if err != nil {
+		respondError(w, http.StatusUnauthorized, "Not authenticated")
+		return
+	}
+
+	// Parse query parameters
+	limit, _ := strconv.Atoi(r.URL.Query().Get("limit"))
+	if limit <= 0 || limit > 100 {
+		limit = 50
+	}
+
+	offset, _ := strconv.Atoi(r.URL.Query().Get("offset"))
+	if offset < 0 {
+		offset = 0
+	}
+
+	unreadOnly := r.URL.Query().Get("unread") == "true"
+
+	articles, err := h.articleRepo.GetByUserID(userID, limit, offset, unreadOnly)
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "Failed to get articles")
+		return
+	}
+
+	respondJSON(w, http.StatusOK, articles)
+}
+
+// ListByFeed handles GET /api/v1/feeds/{id}/articles
+func (h *ArticleHandler) ListByFeed(w http.ResponseWriter, r *http.Request) {
+	userID, err := h.getUserFromRequest(r)
+	if err != nil {
+		respondError(w, http.StatusUnauthorized, "Not authenticated")
+		return
+	}
+
+	feedID, err := uuid.Parse(chi.URLParam(r, "id"))
+	if err != nil {
+		respondError(w, http.StatusBadRequest, "Invalid feed ID")
+		return
+	}
+
+	// Verify feed ownership
+	_, err = h.feedService.GetFeed(feedID, userID)
+	if err != nil {
+		respondError(w, http.StatusForbidden, "Access denied")
+		return
+	}
+
+	// Parse query parameters
+	limit, _ := strconv.Atoi(r.URL.Query().Get("limit"))
+	if limit <= 0 || limit > 100 {
+		limit = 50
+	}
+
+	offset, _ := strconv.Atoi(r.URL.Query().Get("offset"))
+	if offset < 0 {
+		offset = 0
+	}
+
+	articles, err := h.articleRepo.GetByFeedID(feedID, limit, offset)
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "Failed to get articles")
+		return
+	}
+
+	respondJSON(w, http.StatusOK, articles)
+}
+
+// Get handles GET /api/v1/articles/{id}
+func (h *ArticleHandler) Get(w http.ResponseWriter, r *http.Request) {
+	userID, err := h.getUserFromRequest(r)
+	if err != nil {
+		respondError(w, http.StatusUnauthorized, "Not authenticated")
+		return
+	}
+
+	articleID, err := uuid.Parse(chi.URLParam(r, "id"))
+	if err != nil {
+		respondError(w, http.StatusBadRequest, "Invalid article ID")
+		return
+	}
+
+	article, err := h.articleRepo.GetByID(articleID)
+	if err != nil || article == nil {
+		respondError(w, http.StatusNotFound, "Article not found")
+		return
+	}
+
+	// Verify feed ownership
+	_, err = h.feedService.GetFeed(article.FeedID, userID)
+	if err != nil {
+		respondError(w, http.StatusForbidden, "Access denied")
+		return
+	}
+
+	respondJSON(w, http.StatusOK, article)
+}
+
+// MarkRead handles POST /api/v1/articles/{id}/read
+func (h *ArticleHandler) MarkRead(w http.ResponseWriter, r *http.Request) {
+	userID, err := h.getUserFromRequest(r)
+	if err != nil {
+		respondError(w, http.StatusUnauthorized, "Not authenticated")
+		return
+	}
+
+	articleID, err := uuid.Parse(chi.URLParam(r, "id"))
+	if err != nil {
+		respondError(w, http.StatusBadRequest, "Invalid article ID")
+		return
+	}
+
+	article, err := h.articleRepo.GetByID(articleID)
+	if err != nil || article == nil {
+		respondError(w, http.StatusNotFound, "Article not found")
+		return
+	}
+
+	// Verify feed ownership
+	_, err = h.feedService.GetFeed(article.FeedID, userID)
+	if err != nil {
+		respondError(w, http.StatusForbidden, "Access denied")
+		return
+	}
+
+	if err := h.articleRepo.MarkAsRead(articleID); err != nil {
+		respondError(w, http.StatusInternalServerError, "Failed to mark as read")
+		return
+	}
+
+	respondJSON(w, http.StatusOK, map[string]bool{"is_read": true})
+}
+
+// MarkUnread handles DELETE /api/v1/articles/{id}/read
+func (h *ArticleHandler) MarkUnread(w http.ResponseWriter, r *http.Request) {
+	userID, err := h.getUserFromRequest(r)
+	if err != nil {
+		respondError(w, http.StatusUnauthorized, "Not authenticated")
+		return
+	}
+
+	articleID, err := uuid.Parse(chi.URLParam(r, "id"))
+	if err != nil {
+		respondError(w, http.StatusBadRequest, "Invalid article ID")
+		return
+	}
+
+	article, err := h.articleRepo.GetByID(articleID)
+	if err != nil || article == nil {
+		respondError(w, http.StatusNotFound, "Article not found")
+		return
+	}
+
+	// Verify feed ownership
+	_, err = h.feedService.GetFeed(article.FeedID, userID)
+	if err != nil {
+		respondError(w, http.StatusForbidden, "Access denied")
+		return
+	}
+
+	if err := h.articleRepo.MarkAsUnread(articleID); err != nil {
+		respondError(w, http.StatusInternalServerError, "Failed to mark as unread")
+		return
+	}
+
+	respondJSON(w, http.StatusOK, map[string]bool{"is_read": false})
+}
+
+// ToggleFavorite handles POST /api/v1/articles/{id}/favorite
+func (h *ArticleHandler) ToggleFavorite(w http.ResponseWriter, r *http.Request) {
+	userID, err := h.getUserFromRequest(r)
+	if err != nil {
+		respondError(w, http.StatusUnauthorized, "Not authenticated")
+		return
+	}
+
+	articleID, err := uuid.Parse(chi.URLParam(r, "id"))
+	if err != nil {
+		respondError(w, http.StatusBadRequest, "Invalid article ID")
+		return
+	}
+
+	article, err := h.articleRepo.GetByID(articleID)
+	if err != nil || article == nil {
+		respondError(w, http.StatusNotFound, "Article not found")
+		return
+	}
+
+	// Verify feed ownership
+	_, err = h.feedService.GetFeed(article.FeedID, userID)
+	if err != nil {
+		respondError(w, http.StatusForbidden, "Access denied")
+		return
+	}
+
+	if err := h.articleRepo.ToggleFavorite(articleID); err != nil {
+		respondError(w, http.StatusInternalServerError, "Failed to toggle favorite")
+		return
+	}
+
+	respondJSON(w, http.StatusOK, map[string]bool{"is_favorite": !article.IsFavorite})
+}
+
+// MarkAllRead handles POST /api/v1/feeds/{id}/read-all
+func (h *ArticleHandler) MarkAllRead(w http.ResponseWriter, r *http.Request) {
+	userID, err := h.getUserFromRequest(r)
+	if err != nil {
+		respondError(w, http.StatusUnauthorized, "Not authenticated")
+		return
+	}
+
+	feedID, err := uuid.Parse(chi.URLParam(r, "id"))
+	if err != nil {
+		respondError(w, http.StatusBadRequest, "Invalid feed ID")
+		return
+	}
+
+	// Verify feed ownership
+	_, err = h.feedService.GetFeed(feedID, userID)
+	if err != nil {
+		respondError(w, http.StatusForbidden, "Access denied")
+		return
+	}
+
+	if err := h.articleRepo.MarkAllAsRead(feedID); err != nil {
+		respondError(w, http.StatusInternalServerError, "Failed to mark all as read")
+		return
+	}
+
+	respondJSON(w, http.StatusOK, map[string]string{"message": "All articles marked as read"})
+}
+
+// GetFavorites handles GET /api/v1/articles/favorites
+func (h *ArticleHandler) GetFavorites(w http.ResponseWriter, r *http.Request) {
+	userID, err := h.getUserFromRequest(r)
+	if err != nil {
+		respondError(w, http.StatusUnauthorized, "Not authenticated")
+		return
+	}
+
+	limit, _ := strconv.Atoi(r.URL.Query().Get("limit"))
+	if limit <= 0 || limit > 100 {
+		limit = 50
+	}
+
+	offset, _ := strconv.Atoi(r.URL.Query().Get("offset"))
+	if offset < 0 {
+		offset = 0
+	}
+
+	articles, err := h.articleRepo.GetFavorites(userID, limit, offset)
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, "Failed to get favorites")
+		return
+	}
+
+	respondJSON(w, http.StatusOK, articles)
+}
diff --git a/internal/worker/fetcher.go b/internal/worker/fetcher.go
new file mode 100644
index 0000000..e92ce9b
--- /dev/null
+++ b/internal/worker/fetcher.go
@@ -0,0 +1,78 @@
+// Package worker provides background job processing.
+package worker
+
+import (
+	"context"
+	"log"
+	"sync"
+	"time"
+
+	"github.com/michael/flowreader/internal/service"
+)
+
+// FeedFetcher handles periodic feed fetching.
+type FeedFetcher struct {
+	fetchService *service.FetchService
+	interval     time.Duration
+	concurrency  int
+	stopCh       chan struct{}
+	wg           sync.WaitGroup
+}
+
+// NewFeedFetcher creates a new feed fetcher worker.
+func NewFeedFetcher(fetchService *service.FetchService, interval time.Duration, concurrency int) *FeedFetcher {
+	return &FeedFetcher{
+		fetchService: fetchService,
+		interval:     interval,
+		concurrency:  concurrency,
+		stopCh:       make(chan struct{}),
+	}
+}
+
+// Start begins the background fetch loop.
+func (f *FeedFetcher) Start() {
+	f.wg.Add(1)
+	go f.run()
+	log.Printf("Feed fetcher started (interval: %s, concurrency: %d)", f.interval, f.concurrency)
+}
+
+// Stop gracefully stops the fetcher.
+func (f *FeedFetcher) Stop() {
+	close(f.stopCh)
+	f.wg.Wait()
+	log.Println("Feed fetcher stopped")
+}
+
+func (f *FeedFetcher) run() {
+	defer f.wg.Done()
+
+	// Initial fetch on startup
+	f.fetch()
+
+	ticker := time.NewTicker(f.interval)
+	defer ticker.Stop()
+
+	for {
+		select {
+		case <-ticker.C:
+			f.fetch()
+		case <-f.stopCh:
+			return
+		}
+	}
+}
+
+func (f *FeedFetcher) fetch() {
+	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Minute)
+	defer cancel()
+
+	count, err := f.fetchService.FetchAllPending(ctx, f.concurrency)
+	if err != nil {
+		log.Printf("Feed fetch error: %v", err)
+		return
+	}
+
+	if count > 0 {
+		log.Printf("Fetched %d feeds", count)
+	}
+}