diff --git a/internal/photos/api/check_body.go b/internal/photos/api/check_body.go
new file mode 100644
index 0000000..039a58c
--- /dev/null
+++ b/internal/photos/api/check_body.go
@@ -0,0 +1,14 @@
+package api
+
+import (
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+)
+
+func (s *Service) RequireBody(c *gin.Context) {
+	if c.Request.Method == "POST" && c.Request.ContentLength == 0 {
+		s.Error(c, http.StatusBadRequest, ErrReqMissingBody)
+		return
+	}
+}
diff --git a/internal/photos/api/dump.go b/internal/photos/api/dump.go
new file mode 100644
index 0000000..1e9fd79
--- /dev/null
+++ b/internal/photos/api/dump.go
@@ -0,0 +1,15 @@
+package api
+
+import (
+	"bytes"
+	"encoding/json"
+)
+
+func (s *Service) Dump(o interface{}) {
+	b := bytes.NewBuffer([]byte{})
+	enc := json.NewEncoder(b)
+	enc.SetIndent("", "  ")
+	enc.Encode(o)
+
+	s.Logger.Printf("%s", b.Bytes())
+}
diff --git a/internal/photos/api/helpers.go b/internal/photos/api/helpers.go
deleted file mode 100644
index b74c8b8..0000000
--- a/internal/photos/api/helpers.go
+++ /dev/null
@@ -1,36 +0,0 @@
-package api
-
-import (
-	"bytes"
-	"encoding/json"
-	"net/http"
-
-	"github.com/gin-gonic/gin"
-)
-
-func (s *Service) Recovery(c *gin.Context) {
-	defer func() {
-		if err := recover(); err != nil {
-			s.Logger.Println("[PANIC]", err)
-			c.JSON(http.StatusInternalServerError, gin.H{
-				"error": "an unexpected error occur",
-			})
-		}
-	}()
-	c.Next()
-}
-
-func (s *Service) Dump(o interface{}) {
-	b := bytes.NewBuffer([]byte{})
-	enc := json.NewEncoder(b)
-	enc.SetIndent("", "  ")
-	enc.Encode(o)
-
-	s.Logger.Printf("%s", b.Bytes())
-}
-
-func (s *Service) Error(c *gin.Context, code int, err error) {
-	c.AbortWithStatusJSON(code, gin.H{
-		"error": err.Error(),
-	})
-}
diff --git a/internal/photos/api/recovery.go b/internal/photos/api/recovery.go
new file mode 100644
index 0000000..505abe4
--- /dev/null
+++ b/internal/photos/api/recovery.go
@@ -0,0 +1,17 @@
+package api
+
+import (
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+)
+
+func (s *Service) Recovery(c *gin.Context) {
+	defer func() {
+		if err := recover(); err != nil {
+			s.Logger.Print("[PANIC]", err)
+			s.Error(c, http.StatusInternalServerError, ErrUnexpected)
+		}
+	}()
+	c.Next()
+}