diff --git a/tensorflow/core/profiler/protobuf/BUILD b/tensorflow/core/profiler/protobuf/BUILD
index 80acf39aaed..99627ac9d26 100644
--- a/tensorflow/core/profiler/protobuf/BUILD
+++ b/tensorflow/core/profiler/protobuf/BUILD
@@ -65,6 +65,28 @@ tf_proto_library(
     visibility = [":friends"],
 )
 
+tf_proto_library(
+    name = "pod_stats_proto",
+    srcs = ["pod_stats.proto"],
+    cc_api_version = 2,
+    protodeps = [
+        ":diagnostics_proto",
+    ],
+    visibility = [":friends"],
+)
+
+tf_proto_library(
+    name = "pod_viewer_proto",
+    srcs = ["pod_viewer.proto"],
+    cc_api_version = 2,
+    protodeps = [
+        ":diagnostics_proto",
+        ":pod_stats_proto",
+        ":op_stats_proto",
+    ],
+    visibility = [":friends"],
+)
+
 tf_proto_library(
     name = "steps_db_proto",
     srcs = ["steps_db.proto"],
diff --git a/tensorflow/core/profiler/protobuf/pod_stats.proto b/tensorflow/core/profiler/protobuf/pod_stats.proto
new file mode 100644
index 00000000000..abe55a5e8e0
--- /dev/null
+++ b/tensorflow/core/profiler/protobuf/pod_stats.proto
@@ -0,0 +1,41 @@
+syntax = "proto3";
+
+package tensorflow.profiler;
+
+import "tensorflow/core/profiler/protobuf/diagnostics.proto";
+
+message StepBreakdownEvents {
+  int32 id = 1;
+  string name = 2;
+}
+
+// A database of PodStats records.
+message PodStatsDatabase {
+  // All PodStats records, one for each row in the PodStats tool.
+  repeated PodStatsRecord pod_stats_record = 1;
+  // Error and warning messages for diagnosing profiling issues.
+  Diagnostics diagnostics = 3;
+  // A map from event type number to event name string for step breakdown.
+  repeated StepBreakdownEvents step_breakdown_events = 4;
+  reserved 2;
+}
+
+// Next ID: 20
+// There is one PodStatsRecord for each step traced on each compute node.
+message PodStatsRecord {
+  // The host name where the trace was collected.
+  string host_name = 1;
+  // The TPU global chip id where the trace was collected.
+  int32 chip_id = 2;
+  // The TPU node id where the trace was collected.
+  int32 node_id = 3;
+  // The step number.
+  uint32 step_num = 4;
+  // The step duration in micro-seconds.
+  double total_duration_us = 5;
+  // Breakdown the durations for each event type in micro-seconds.
+  map<int32, double> step_breakdown_us = 19;
+  // Indicates the bottleneck out of the above mentioned metrics.
+  string bottleneck = 14;
+  reserved 6, 7, 8, 9, 10, 11, 12, 13, 15, 16, 17, 18;
+}
diff --git a/tensorflow/core/profiler/protobuf/pod_viewer.proto b/tensorflow/core/profiler/protobuf/pod_viewer.proto
new file mode 100644
index 00000000000..0c327657616
--- /dev/null
+++ b/tensorflow/core/profiler/protobuf/pod_viewer.proto
@@ -0,0 +1,112 @@
+// This proto describes the format of the output profile file from
+// the Pod Viewer tool.
+syntax = "proto3";
+
+package tensorflow.profiler;
+
+import "tensorflow/core/profiler/protobuf/diagnostics.proto";
+import "tensorflow/core/profiler/protobuf/op_stats.proto";
+import "tensorflow/core/profiler/protobuf/pod_stats.proto";
+
+// Describes the replica groups in a cross replica op (e.g., all-reduce and
+// all-to-all).
+message ReplicaGroup {
+  // The ids of the replicas that belongs to the same group. The ordering of the
+  // ids matters in some ops (e.g., all-to-all).
+  repeated int64 replica_ids = 1;
+}
+
+message AllReduceOpInfo {
+  // Name of this OP.
+  string name = 1;
+  // Number of instances that this OP occurred.
+  uint32 occurrences = 2;
+  // The time in microseconds spent in this OP (averaged across all of its
+  // occurrences).
+  double duration_us = 3;
+  // Byte size of data transferred.
+  uint64 data_size = 4;
+  // Replica groups.
+  repeated ReplicaGroup replica_groups = 5;
+  // Description (e.g. XLA expression).
+  string description = 6;
+}
+
+// Result proto for information in a step across all cores.
+message PodStatsMap {
+  // The (micro) step number.
+  uint32 step_num = 1;
+  // A map from core_id to PodStatsRecord.
+  map<uint32, PodStatsRecord> pod_stats_per_core = 2;
+  // A database of channel info.
+  repeated ChannelInfo channel_db = 3;
+  // A map from core ID to program replica id. Replica id map could change
+  // during a profile session, but should stay stable within a step.
+  map<uint32, uint32> core_id_to_replica_id_map = 4;
+  // A database of all reduce ops.
+  repeated AllReduceOpInfo all_reduce_op_db = 5;
+}
+
+// A sequence of PodStatsMap for each step.
+message PodStatsSequence {
+  repeated PodStatsMap pod_stats_map = 1;
+}
+
+// Next ID: 14
+// Information about a send and recv channel.
+message ChannelInfo {
+  // Id of the channel.
+  int64 channel_id = 1;
+  // Core ids of send ops.
+  repeated uint32 src_core_ids = 11;
+  // Core ids of recv ops.
+  repeated uint32 dst_core_ids = 12;
+  // Byte size of the data transferred.
+  uint64 data_size = 4;
+  // Duration from the beginning of send to the end of recv-done in
+  // microseconds.
+  double duration_us = 5;
+  // Number of occurrences of a channel.
+  uint32 occurrences = 6;
+  // Percentage of the link BW utilized over the peak link BW.
+  double utilization = 7;
+  // A list of hlo names associated with this channel id.
+  repeated string hlo_names = 8;
+  // Duration from the beginning of the recv-done to the beginning of send in
+  // microseconds. If the recv-done op starts after the beginning of the send
+  // op, the delay is zero.
+  double send_delay_us = 9;
+  // Description (e.g. XLA expression).
+  string description = 13;
+
+  reserved 2, 3, 10;
+}
+
+// Run environment of the job.
+message PodViewerRunEnvironment {
+  // The type of TPU used.
+  string tpu_type = 1;
+  // Pod system topology.
+  SystemTopology topology = 2;
+}
+
+message PodViewerSummary {
+  repeated string warnings = 1;
+}
+
+// Next ID: 10
+// A database of pod viewer records.
+message PodViewerDatabase {
+  // Pod level stats for each step.
+  PodStatsSequence pod_stats_sequence = 3;
+  // Job run environment, including number of hosts used, device type, etc.
+  PodViewerRunEnvironment run_environment = 6;
+  // Top level summary of pod viewer.
+  PodViewerSummary summary = 7;
+  // Error and warning messages for diagnosing profiling issues.
+  Diagnostics diagnostics = 8;
+  // A map from event type number to event name string for step breakdown.
+  repeated StepBreakdownEvents step_breakdown_events = 9;
+
+  reserved 1, 2, 4, 5;
+}