1 files changed, 7 insertions, 0 deletions
diff --git a/synapse/api/constants.py b/synapse/api/constants.py
index 312196675e..49c4b85054 100644
--- a/synapse/api/constants.py
+++ b/synapse/api/constants.py
@@ -138,3 +138,10 @@ class LimitBlockingTypes(object):
 
     MONTHLY_ACTIVE_USER = "monthly_active_user"
     HS_DISABLED = "hs_disabled"
+
+
+class EventContentFields(object):
+    """Fields found in events' content, regardless of type."""
+
+    # Labels for the event, cf https://github.com/matrix-org/matrix-doc/pull/2326
+    LABELS = "org.matrix.labels"