diff --git a/templates/html/admin-upload.gohtml b/templates/html/admin-upload.gohtml
index c7afd53..f7f7440 100644
--- a/templates/html/admin-upload.gohtml
+++ b/templates/html/admin-upload.gohtml
@@ -12,7 +12,7 @@
       <form class="form adminUploadForm" action="/admin/documents/upload" method="post" enctype="multipart/form-data">
         <label class="formLabel" for="bucket">Type de document:</label>
         <select class="formSelect" name="bucket" id="bucket">
-          {{ range .Buckets }}
+          {{ range .Data.Buckets }}
             <option class="formOption" value="{{ .Name }}">{{ .DisplayName }}</option>
           {{ end }}
         </select>
diff --git a/web_handlers/web_handlers.go b/web_handlers/web_handlers.go
index e9639cd..dc45dfb 100644
--- a/web_handlers/web_handlers.go
+++ b/web_handlers/web_handlers.go
@@ -44,26 +44,27 @@ func HandleVieEtudianteOrganisme(c echo.Context) error {
 }
 
 func HandleDocumentation(c echo.Context) error {
+	var response models.HandleDocumentationResponse
+
 	client, err := api.NewApiClientFromViper()
 	if err != nil {
 		return c.Render(http.StatusInternalServerError, "documentation-html", nil)
 	}
 
-	result, err := client.Call(http.MethodGet, "/v1/bucket")
+	v1BucketListResponse, err := client.ListBuckets()
 	if err != nil {
-		return c.Render(http.StatusInternalServerError, "documentation-html", nil)
+		response.StatusCode = v1BucketListResponse.StatusCode
+		response.Message = v1BucketListResponse.Message
+		response.Error = err.Error()
+
+		return c.Render(response.StatusCode, "documentation-html", response)
 	}
 
-	var buckets map[string]string
+	//TODO check v1BucketListRespone StatusCode and Error
 
-	err = json.Unmarshal(result, &buckets)
-	if err != nil {
-		return c.Render(http.StatusInternalServerError, "documentation-html", nil)
-	}
-
-	var data []models.Bucket
-
-	for bucket, displayName := range buckets {
+	for bucket, displayName := range v1BucketListResponse.Data.Buckets {
+		// TODO move call to dedicated API client method
+		// TODO add Response type
 		content, err := client.Call(http.MethodGet, fmt.Sprintf("/v1/bucket/%s", bucket))
 		if err != nil {
 			return c.Render(http.StatusInternalServerError, "documentation-html", nil)
@@ -94,16 +95,19 @@ func HandleDocumentation(c echo.Context) error {
 			documents_processed := documents
 		*/
 
-		data = append(data, models.Bucket{
+		response.Data.Buckets = append(response.Data.Buckets, models.Bucket{
 			Name:        bucket,
 			DisplayName: displayName,
 			Documents:   documents,
 		})
 	}
 
-	sort.SliceStable(data, func(i, j int) bool { return data[i].Name < data[j].Name })
+	sort.SliceStable(response.Data.Buckets, func(i, j int) bool { return response.Data.Buckets[i].Name < response.Data.Buckets[j].Name })
 
-	return c.Render(http.StatusOK, "documentation-html", data)
+	response.StatusCode = http.StatusOK
+
+	// TODO render .Message
+	return c.Render(response.StatusCode, "documentation-html", response.Data.Buckets)
 }
 
 func HandleFormulaires(c echo.Context) error {
@@ -140,65 +144,80 @@ func HandleAdmin(c echo.Context) error {
 }
 
 func HandleAdminDocumentsUpload(c echo.Context) error {
+	var response models.HandleAdminDocumentsUploadResponse
 	client, err := api.NewApiClientFromViper()
 	if err != nil {
-		return c.Render(http.StatusInternalServerError, "documentation-html", nil)
+		response.StatusCode = http.StatusInternalServerError
+		response.Error = err.Error()
+
+		return c.Render(response.StatusCode, "admin-upload-html", nil)
 	}
 
-	result, err := client.Call(http.MethodGet, "/v1/bucket")
+	v1BucketListResponse, err := client.ListBuckets()
 	if err != nil {
-		return c.Render(http.StatusInternalServerError, "documentation-html", nil)
+		response.StatusCode = v1BucketListResponse.StatusCode
+		response.Error = err.Error()
+		response.Message = v1BucketListResponse.Message
+
+		return c.Render(response.StatusCode, "admin-upload-html", nil)
 	}
 
-	var buckets map[string]string
-
-	err = json.Unmarshal(result, &buckets)
-	if err != nil {
-		return c.Render(http.StatusInternalServerError, "documentation-html", nil)
-	}
-
-	var data struct {
-		Buckets []models.Bucket
-		Message string
-	}
-
-	for bucketName, displayName := range buckets {
-		data.Buckets = append(data.Buckets, models.Bucket{
+	for bucketName, displayName := range v1BucketListResponse.Data.Buckets {
+		response.Data.Buckets = append(response.Data.Buckets, models.Bucket{
 			Name:        bucketName,
 			DisplayName: displayName,
 		})
 	}
+	response.StatusCode = http.StatusOK
 
-	return c.Render(http.StatusOK, "admin-upload-html", data)
+	return c.Render(response.StatusCode, "admin-upload-html", response)
 }
 
 func HandleAdminDocumentsUploadPOST(c echo.Context) error {
-	var data struct {
-		Buckets []models.Bucket
-		Message string
-	}
+	/*
+		var data struct {
+			Buckets []models.Bucket
+			Message string
+		}
+	*/
+
+	var response models.HandleAdminDocumentsUploadResponse
 
 	client, err := api.NewApiClientFromViper()
 	if err != nil {
-		data.Message = fmt.Sprintf("HandleAdminDocumentsUploadPOST#api.New: %s", err)
-		return c.Render(http.StatusInternalServerError, "admin-upload-html", data)
+		response.StatusCode = http.StatusInternalServerError
+		response.Message = "Error during api.newApiClientFromViper()"
+		response.Error = err.Error()
+
+		return c.Render(response.StatusCode, "admin-upload-html", response)
 	}
 
-	result, err := client.Call(http.MethodGet, "/v1/bucket")
+	v1BucketListResponse, err := client.ListBuckets()
 	if err != nil {
-		data.Message = "Error during GET /v1/bucket"
-		return c.Render(http.StatusInternalServerError, "documentation-html", data)
+		response.StatusCode = v1BucketListResponse.StatusCode
+		response.Message = v1BucketListResponse.Message
+		response.Error = err.Error()
+
+		return c.Render(response.StatusCode, "admin-upload-html", response)
 	}
 
-	var buckets map[string]string
+	/*
+		result, err := client.Call(http.MethodGet, "/v1/bucket")
+		if err != nil {
+			data.Message = "Error during GET /v1/bucket"
+			return c.Render(http.StatusInternalServerError, "admin-upload-html", data)
+		}
 
-	err = json.Unmarshal(result, &buckets)
-	if err != nil {
-		return c.Render(http.StatusInternalServerError, "documentation-html", nil)
-	}
+		var buckets map[string]string
 
-	for bucketName, displayName := range buckets {
-		data.Buckets = append(data.Buckets, models.Bucket{
+		err = json.Unmarshal(result, &buckets)
+		if err != nil {
+			return c.Render(http.StatusInternalServerError, "admin-upload-html", nil)
+		}
+	*/
+
+	for bucketName, displayName := range v1BucketListResponse.Data.Buckets {
+		response.Data.Buckets = append(response.Data.Buckets, models.Bucket{
 			Name:        bucketName,
 			DisplayName: displayName,
 		})
@@ -208,24 +227,31 @@ func HandleAdminDocumentsUploadPOST(c echo.Context) error {
 
 	document, err := c.FormFile("document")
 	if err != nil {
-		data.Message = fmt.Sprintf("HandleAdminDocumentsUploadPOST#c.FormFile: %s", err)
-		return c.Render(http.StatusBadRequest, "admin-upload-html", data)
+		response.StatusCode = http.StatusBadRequest
+		response.Message = "Formulaire invalide"
+		response.Error = err.Error()
+
+		return c.Render(response.StatusCode, "admin-upload-html", response)
 	}
 
-	response, err := client.UploadDocument(bucket, document)
+	uploadDocumentResponse, err := client.UploadDocument(bucket, document)
 	if err != nil {
-		data.Message = fmt.Sprintf("HandleAdminDocumentsUploadPOST#client.UploadDocument: %s", err)
-		return c.Render(http.StatusInternalServerError, "admin-upload-html", data)
+		response.StatusCode = uploadDocumentResponse.StatusCode
+		response.Message = uploadDocumentResponse.Message
+		response.Error = err.Error()
+
+		return c.Render(response.StatusCode, "admin-upload-html", response)
 	}
 
 	// Format response
 	var info, status string
 
-	info = fmt.Sprintf("[%.0f] /public/documentation/%s/%s", response.Data.Size, response.Data.Bucket, response.Data.Object)
+	info = fmt.Sprintf("[%.0f] /public/documentation/%s/%s", uploadDocumentResponse.Data.Size, uploadDocumentResponse.Data.Bucket, uploadDocumentResponse.Data.Object)
 
-	status = response.Message
+	status = uploadDocumentResponse.Message
 
-	data.Message = fmt.Sprintf("%s - %s", status, info)
+	response.StatusCode = http.StatusOK
+	response.Message = fmt.Sprintf("%s - %s", status, info)
 
-	return c.Render(http.StatusOK, "admin-upload-html", data)
+	return c.Render(response.StatusCode, "admin-upload-html", response)
 }