diff --git a/server/fever.go b/server/fever.go
new file mode 100644
index 0000000..cb82d4f
--- /dev/null
+++ b/server/fever.go
@@ -0,0 +1,157 @@
+package server
+
+import (
+	"fmt"
+	"github.com/nkanaev/yarr/storage"
+	"net/http"
+	"strings"
+)
+
+var feverHandlers = map[string]func(rw http.ResponseWriter, req *http.Request){
+	"groups":          FeverGroupsHandler,
+	"feeds":           FeverFeedsHandler,
+	"unread_item_ids": FeverFilteredItemIDsHandler,
+	"saved_item_ids":  FeverFilteredItemIDsHandler,
+	"links":           FeverLinksHandler,
+}
+
+type FeverGroup struct {
+	ID    int64  `json:"id"`
+	Title string `json:"title"`
+}
+
+type FeverFeedsGroup struct {
+	GroupID int64  `json:"group_id"`
+	FeedIDs string `json:"feed_ids"`
+}
+
+type FeverFeed struct {
+	ID                int64  `json:"id"`
+	FaviconID         int64  `json:"favicon_id"`
+	Title             string `json:"title"`
+	Url               string `json:"url"`
+	SiteUrl           string `json:"site_url"`
+	IsSpark           int    `json:"is_spark"`
+	LastUpdatedOnTime int64  `json:"last_updated_on_time"`
+}
+
+func writeFeverJSON(rw http.ResponseWriter, data map[string]interface{}) {
+	data["api_version"] = 1
+	data["auth"] = 1
+	writeJSON(rw, data)
+}
+
+func FeverHandler(rw http.ResponseWriter, req *http.Request) {
+	query := req.URL.Query()
+	fmt.Println(req.URL.String())
+	for key, handler := range feverHandlers {
+		if _, ok := query[key]; ok {
+			handler(rw, req)
+			return
+		}
+	}
+	writeJSON(rw, map[string]interface{}{
+		"api_version": 1,
+		"auth":        1,
+	})
+}
+
+func joinInts(values []int64) string {
+	var result strings.Builder
+	for i, val := range values {
+		fmt.Fprintf(&result, "%d", val)
+		if i != len(values)-1 {
+			result.WriteString(",")
+		}
+	}
+	return result.String()
+}
+
+func feedGroups(db *storage.Storage) []*FeverFeedsGroup {
+	feeds := db.ListFeeds()
+
+	groupFeeds := make(map[int64][]int64)
+	for _, feed := range feeds {
+		// TODO: what about top-level feeds?
+		if feed.FolderId == nil {
+			continue
+		}
+		groupFeeds[*feed.FolderId] = append(groupFeeds[*feed.FolderId], feed.Id)
+	}
+	result := make([]*FeverFeedsGroup, 0)
+	for groupId, feedIds := range groupFeeds {
+		result = append(result, &FeverFeedsGroup{
+			GroupID: groupId,
+			FeedIDs: joinInts(feedIds),
+		})
+	}
+	return result
+}
+
+func FeverGroupsHandler(rw http.ResponseWriter, req *http.Request) {
+	folders := db(req).ListFolders()
+	groups := make([]*FeverGroup, len(folders))
+	for i, folder := range folders {
+		groups[i] = &FeverGroup{ID: folder.Id, Title: folder.Title}
+	}
+	writeFeverJSON(rw, map[string]interface{}{
+		"groups":       groups,
+		"feeds_groups": feedGroups(db(req)),
+	})
+}
+
+func FeverFeedsHandler(rw http.ResponseWriter, req *http.Request) {
+	feeds := db(req).ListFeeds()
+
+	feverFeeds := make([]*FeverFeed, len(feeds))
+	for i, feed := range feeds {
+		// TODO: check url/siteurl
+		// TODO: store last updated on time?
+		feverFeeds[i] = &FeverFeed{
+			ID:                feed.Id,
+			FaviconID:         feed.Id,
+			Title:             feed.Title,
+			Url:               feed.FeedLink,
+			SiteUrl:           feed.Link,
+			IsSpark:           0,
+			LastUpdatedOnTime: 1,
+		}
+	}
+	writeFeverJSON(rw, map[string]interface{}{
+		"feeds":        feverFeeds,
+		"feeds_groups": feedGroups(db(req)),
+	})
+}
+
+func FeverFilteredItemIDsHandler(rw http.ResponseWriter, req *http.Request) {
+	var status storage.ItemStatus
+	var filter string
+	if _, ok := req.URL.Query()["unread_item_ids"]; ok {
+		status = storage.UNREAD
+		filter = "unread_item_ids"
+	} else {
+		status = storage.STARRED
+		filter = "saved_item_ids"
+	}
+
+	itemIds := make([]int64, 0, 4000)
+	batch := 1000
+	index := 0
+	for {
+		items := db(req).ListItems(storage.ItemFilter{Status: &status}, index*batch, batch, true)
+		if len(items) == 0 {
+			break
+		}
+		for _, item := range items {
+			itemIds = append(itemIds, item.Id)
+		}
+		index += 1
+	}
+	writeFeverJSON(rw, map[string]interface{}{
+		filter: joinInts(itemIds),
+	})
+}
+
+func FeverLinksHandler(rw http.ResponseWriter, req *http.Request) {
+
+}
diff --git a/server/handlers.go b/server/handlers.go
index 4aaa19e..ad30790 100644
--- a/server/handlers.go
+++ b/server/handlers.go
@@ -38,6 +38,7 @@ var routes []Route = []Route{
 	p("/opml/import", OPMLImportHandler),
 	p("/opml/export", OPMLExportHandler),
 	p("/page", PageCrawlHandler),
+	p("/fever/", FeverHandler),
 }
 
 type asset struct {