diff --git a/otc_metadata/data/services.yaml b/otc_metadata/data/services.yaml
index dbb7606d..7e97935f 100644
--- a/otc_metadata/data/services.yaml
+++ b/otc_metadata/data/services.yaml
@@ -317,6 +317,14 @@ documents:
     service_type: dns
     title: User Guide
     type: umn
+  - hc_location: api/drs
+    html_location: docs/drs/api-ref
+    link: /api-ref/data-replication-service/
+    pdf_name: drs-api-ref
+    rst_location: api-ref/source
+    service_type: drs
+    title: API Reference
+    type: api-ref
   - hc_location: usermanual/drs
     html_location: docs/drs/umn
     link: /umn/data-replication-service/