diff --git a/viecpro_typesense/collections.py b/viecpro_typesense/collections.py
index cb79f08..f6f31c8 100644
--- a/viecpro_typesense/collections.py
+++ b/viecpro_typesense/collections.py
@@ -1,4 +1,4 @@
-from .handlers import GenericDocIDHandler
+from .handlers import GenericDocIDHandler, ZoteroTagHandler
 from viecpro_typesense import Collection, StaticField, CollectionConfig, O, Field
 from copy import deepcopy
 from .fields import StringField, FullNameField, TitlesNestedObjectField, RelationTypeHierarchyHandler, WrittenDateField, BibtexShortTitleHandler, BibtexTitleHandler, BibtexTypeHandler, RelatedReferenceDocField, ObjectIDField, DateObjectDateField, LabelsNestedObjectField, KindField, SourceField, TargetField, HofstaatsinhaberField, MainOwnerField, FunctionsArrayField, PersonInstitutionArrayField
@@ -26,6 +26,8 @@ class Config:
         "bibtex", handler=BibtexShortTitleHandler, options=O(facet=True, optional=True))
     kind = StringField("bibtex", handler=BibtexTypeHandler,
                        options=O(facet=True, optional=True))
+    tag = StringField("url", handler=ZoteroTagHandler,
+                       options=O(facet=True, optional=False))
     related_doc = RelatedReferenceDocField(
         ("content_type", "object_id"), options=O(facet=True, optional=True))
 
diff --git a/viecpro_typesense/handlers.py b/viecpro_typesense/handlers.py
index ad30cfe..7a15ac7 100644
--- a/viecpro_typesense/handlers.py
+++ b/viecpro_typesense/handlers.py
@@ -1,3 +1,5 @@
+import os
+import requests
 from apis_core.apis_vocabularies.models import VocabsBaseClass
 from viecpro_typesense.classes import Handler
 import json
@@ -152,6 +154,18 @@ def func(bibtex):
         bib = json.loads(bibtex)
         return bib.get("type", "")
 
+class ZoteroTagHandler(Handler):
+    def func(zotero_url):       
+        json = requests.get(
+            zotero_url, params={"key": os.environ.get("ZOTERO_API_KEY")}
+        ).json()
+        tags = json["data"].get("tags")
+        tag_group = [tag["tag"][2:] for tag in tags if tag["tag"].startswith("1_")]
+        if len(tag_group) == 1:
+            return tag_group[0]
+        else:
+            return "Allgemein"
+
 
 class HofstaatsinhaberHandler(Handler):