diff --git a/build.gradle.kts b/build.gradle.kts
index c3680e6..686f0ec 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -177,4 +177,14 @@ afterEvaluate {
             sign(publishing.publications["release"])
         }
     }
+
+    if (project == rootProject) {
+        // standalone build only — in multi-project (android-sdk), parent configures nmcp
+        nmcp {
+            publishAllPublicationsToCentralPortal {
+                username.set(findProperty("ossrh_username") as String? ?: System.getenv("OSSRH_USERNAME") ?: "")
+                password.set(findProperty("ossrh_password") as String? ?: System.getenv("OSSRH_PASSWORD") ?: "")
+            }
+        }
+    }
 }