diff --git a/apps/t3/BUCK b/apps/t3/BUCK
new file mode 100644
index 0000000..cc05798
--- /dev/null
+++ b/apps/t3/BUCK
@@ -0,0 +1,21 @@
+COMPILE_DEPS = [
+    '//lib:CORE_DEPS',
+    '//lib:KRYO',
+    '//core/store/serializers:onos-core-serializers',
+    '//core/store/primitives:onos-core-primitives',
+    '//core/api:onos-api',
+    '//lib:org.apache.karaf.shell.console',
+    '//cli:onos-cli',
+]
+
+osgi_jar_with_tests (
+    deps = COMPILE_DEPS,
+)
+
+onos_app (
+    title = 'Trellis Troubleshooting Toolkit',
+    category = 'Utilities',
+    url = 'http://onosproject.org',
+    description = 'Provides static analysis of flows and groups ' +
+    'to determine the possible paths a packet may take.',
+)