initial commit
diff --git a/build.yaml b/build.yaml
index 6227b18..367ef98 100644
--- a/build.yaml
+++ b/build.yaml
@@ -16,10 +16,12 @@
   - src/core/census/aggregation.h
   - src/core/census/context.h
   - src/core/census/rpc_metric_id.h
+  - src/core/census/tag_set.h
   src:
   - src/core/census/context.c
   - src/core/census/initialize.c
   - src/core/census/operation.c
+  - src/core/census/tag_set.c
   - src/core/census/tracing.c
 - name: grpc++_base
   public_headers:
@@ -1617,6 +1619,16 @@
   - mac
   - linux
   - posix
+- name: tag_set_test
+  build: test
+  language: c
+  src:
+  - test/core/census/tag_set_test.c
+  deps:
+  - grpc_test_util
+  - grpc
+  - gpr_test_util
+  - gpr
 - name: tcp_client_posix_test
   build: test
   language: c