diff --git a/metropolis/proto/BUILD.bazel b/metropolis/proto/BUILD.bazel
index d3a0f89..0b8ffa0 100644
--- a/metropolis/proto/BUILD.bazel
+++ b/metropolis/proto/BUILD.bazel
@@ -1,4 +1,3 @@
-load("@rules_proto_grpc_buf//:defs.bzl", "buf_proto_lint_test")
 load("@rules_proto_grpc_doc//:defs.bzl", "doc_html_compile")
 
 doc_html_compile(
@@ -8,25 +7,3 @@
         "//metropolis/proto/common:common_proto",
     ],
 )
-
-buf_proto_lint_test(
-    name = "proto_lint_test",
-    except_rules = [
-        "PACKAGE_VERSION_SUFFIX",
-        "RPC_REQUEST_RESPONSE_UNIQUE",
-        "ENUM_VALUE_PREFIX",  # TODO: evaluate correctness
-        "ENUM_ZERO_VALUE_SUFFIX",  # TODO: evaluate correctness
-        "RPC_REQUEST_STANDARD_NAME",  # TODO: evaluate correctness
-        "RPC_RESPONSE_STANDARD_NAME",  # TODO: evaluate correctness
-        "SERVICE_SUFFIX",  # TODO: evaluate correctness
-        "FIELD_LOWER_SNAKE_CASE",  # TODO: evaluate correctness
-    ],
-    protos = [
-        "//metropolis/proto/api:api_proto",
-        "//metropolis/proto/common:common_proto",
-    ],
-    use_rules = [
-        "DEFAULT",
-        "COMMENTS",
-    ],
-)
diff --git a/metropolis/proto/api/BUILD.bazel b/metropolis/proto/api/BUILD.bazel
index b1e84e6..6438ef7 100644
--- a/metropolis/proto/api/BUILD.bazel
+++ b/metropolis/proto/api/BUILD.bazel
@@ -1,6 +1,26 @@
 load("@io_bazel_rules_go//go:def.bzl", "go_library")
 load("@io_bazel_rules_go//proto:def.bzl", "go_proto_library")
 load("@rules_proto//proto:defs.bzl", "proto_library")
+load("@rules_proto_grpc_buf//:defs.bzl", "buf_proto_lint_test")
+
+buf_proto_lint_test(
+    name = "api_proto_lint_test",
+    except_rules = [
+        "PACKAGE_VERSION_SUFFIX",
+        "RPC_REQUEST_RESPONSE_UNIQUE",  # TODO: evaluate correctness
+        "ENUM_VALUE_PREFIX",  # TODO: evaluate correctness
+        "ENUM_ZERO_VALUE_SUFFIX",  # TODO: evaluate correctness
+        "RPC_REQUEST_STANDARD_NAME",  # TODO: evaluate correctness
+        "RPC_RESPONSE_STANDARD_NAME",  # TODO: evaluate correctness
+        "SERVICE_SUFFIX",  # TODO: evaluate correctness
+        "FIELD_LOWER_SNAKE_CASE",  # TODO: evaluate correctness
+    ],
+    protos = [":api_proto"],
+    use_rules = [
+        "DEFAULT",
+        "COMMENTS",
+    ],
+)
 
 proto_library(
     name = "api_proto",
@@ -15,7 +35,7 @@
         "//metropolis/proto/common:common_proto",
         "//metropolis/proto/ext:ext_proto",
         "//osbase/logtree/proto:proto_proto",
-        "//osbase/net/proto:net_proto_proto",
+        "//osbase/net/proto:proto_proto",
         "@protobuf//:duration_proto",
         "@protobuf//:field_mask_proto",
     ],
diff --git a/metropolis/proto/common/BUILD.bazel b/metropolis/proto/common/BUILD.bazel
index 031a27c..e34ae51 100644
--- a/metropolis/proto/common/BUILD.bazel
+++ b/metropolis/proto/common/BUILD.bazel
@@ -1,6 +1,22 @@
 load("@io_bazel_rules_go//go:def.bzl", "go_library")
 load("@io_bazel_rules_go//proto:def.bzl", "go_proto_library")
 load("@rules_proto//proto:defs.bzl", "proto_library")
+load("@rules_proto_grpc_buf//:defs.bzl", "buf_proto_lint_test")
+
+buf_proto_lint_test(
+    name = "common_proto_lint_test",
+    except_rules = [
+        "PACKAGE_VERSION_SUFFIX",
+        "ENUM_VALUE_PREFIX",  # TODO: evaluate correctness
+        "ENUM_ZERO_VALUE_SUFFIX",  # TODO: evaluate correctness
+        "FIELD_LOWER_SNAKE_CASE",  # TODO: evaluate correctness
+    ],
+    protos = [":common_proto"],
+    use_rules = [
+        "DEFAULT",
+        "COMMENTS",
+    ],
+)
 
 proto_library(
     name = "common_proto",
diff --git a/metropolis/proto/ext/BUILD.bazel b/metropolis/proto/ext/BUILD.bazel
index 01112b0..7137da4 100644
--- a/metropolis/proto/ext/BUILD.bazel
+++ b/metropolis/proto/ext/BUILD.bazel
@@ -1,6 +1,19 @@
 load("@io_bazel_rules_go//go:def.bzl", "go_library")
 load("@io_bazel_rules_go//proto:def.bzl", "go_proto_library")
 load("@rules_proto//proto:defs.bzl", "proto_library")
+load("@rules_proto_grpc_buf//:defs.bzl", "buf_proto_lint_test")
+
+buf_proto_lint_test(
+    name = "ext_proto_lint_test",
+    except_rules = [
+        "PACKAGE_VERSION_SUFFIX",
+    ],
+    protos = [":ext_proto"],
+    use_rules = [
+        "DEFAULT",
+        "COMMENTS",
+    ],
+)
 
 proto_library(
     name = "ext_proto",
diff --git a/metropolis/proto/private/BUILD.bazel b/metropolis/proto/private/BUILD.bazel
index e15ddf9..3c4aacf 100644
--- a/metropolis/proto/private/BUILD.bazel
+++ b/metropolis/proto/private/BUILD.bazel
@@ -1,6 +1,19 @@
 load("@io_bazel_rules_go//go:def.bzl", "go_library")
 load("@io_bazel_rules_go//proto:def.bzl", "go_proto_library")
 load("@rules_proto//proto:defs.bzl", "proto_library")
+load("@rules_proto_grpc_buf//:defs.bzl", "buf_proto_lint_test")
+
+buf_proto_lint_test(
+    name = "private_proto_lint_test",
+    except_rules = [
+        "PACKAGE_VERSION_SUFFIX",
+    ],
+    protos = [":private_proto"],
+    use_rules = [
+        "DEFAULT",
+        "COMMENTS",
+    ],
+)
 
 proto_library(
     name = "private_proto",