diff --git a/admin.proto b/admin.proto
index 97ac3b1..987c6f7 100644
--- a/admin.proto
+++ b/admin.proto
@@ -3,6 +3,7 @@ syntax = "proto3";
 import "protoc-gen-openapiv2/options/annotations.proto";
 
 import "admin_apikey.proto";
+import "admin_metric.proto";
 import "status.proto";
 
 option go_package = "vectara.com/public/proto/admin";
diff --git a/admin_metric.proto b/admin_metric.proto
new file mode 100644
index 0000000..3c0381e
--- /dev/null
+++ b/admin_metric.proto
@@ -0,0 +1,84 @@
+syntax = "proto3";
+
+import "status.proto";
+
+option go_package = "vectara.com/public/proto/admin";
+
+option java_package = "com.vectara.admin";
+option java_outer_classname = "AdminMetricProtos";
+
+package com.vectara.admin;
+
+/******************************************************************************
+  Metrics (get request rate etc.)
+ ******************************************************************************/
+
+// This window is used to specify a time range for metrics
+message AbsoluteWindow {
+  int64 start_epoch_secs = 1;
+  int64 end_epoch_secs = 2;
+}
+
+// The request type for usage metrics
+message UsageMetricsRequest {
+  // The type of metric to get
+  enum MetricType {
+    METRICTYPE__NONE = 0;
+    METRICTYPE__INDEXING = 1;
+    METRICTYPE__SERVING = 2;
+  }
+
+  // The corpus for which the metric is requested.
+  uint32 corpus_id = 1;
+  // The time period for which the metric is requested.
+  AbsoluteWindow window = 2;
+  // The type of metric to get.
+  MetricType type = 3;
+  // The response stats will be aggregated by this interval. Minimum aggregation interval is 1 minute.
+  // Supported granularity units for aggregation are days, hours and minutes.
+  // For example, If 2.5 days (in seconds) are passed, results will be aggregated by 2 days.
+  // Similarly, if 7.6 hours (in seconds) are passed, results will be aggregated by 7 hours.
+  int64 aggregation_interval_secs = 4;
+}
+
+// Indexing data
+message IndexingMetric {
+  // The number of documents indexed
+  uint64 doc_count = 1;
+  // The number of document parts indexed
+  uint64 doc_part_count = 2;
+  // The number of bytes indexed.
+  // In case of Upload API, this is the actual bytes extracted from the document and not
+  // the size of the document.
+  // In case of Index API, this is the combined size of text in all the sections of the document.
+  uint64 doc_part_bytes = 3;
+  // The start time for this metric
+  int64 start_epoch_secs = 4;
+}
+
+// Serving/querying data
+message ServingMetric {
+  // The number of rows read
+  uint64 rows_read = 1;
+  // The number of queries
+  uint64 query_count = 2;
+  // The start time for this metric
+  int64 start_epoch_secs = 3;
+}
+
+message UsageMetricsResponse {
+  // The response for a single interval
+  message IntervalValue {
+    // Interval containing value for either Indexing or Serving
+    oneof value {
+      IndexingMetric indexing_value = 1;
+      ServingMetric serving_value = 2;
+    }
+  }
+
+  // List of IntervalValue containing values for either Indexing or Serving. These are
+  // aggregated by the interval specified in the request.
+  repeated IntervalValue values = 1;
+  // The status response of the request
+  Status status = 2;
+}
diff --git a/services.proto b/services.proto
index 75c605f..20e512a 100644
--- a/services.proto
+++ b/services.proto
@@ -4,6 +4,7 @@ import "admin_account.proto";
 import "admin_apikey.proto";
 import "admin.proto";
 import "admin_job.proto";
+import "admin_metric.proto";
 import "admin_security.proto";
 import "admin_user.proto";
 
@@ -167,6 +168,14 @@ service AdminService {
     };
   }
 
+  // Get metric usage of either sliding windows or between two timestamps
+  rpc GetUsageMetrics(com.vectara.admin.UsageMetricsRequest) returns (com.vectara.admin.UsageMetricsResponse){
+    option (google.api.http) = {
+      post: "/v1/get-usage-metrics"
+      body: "*"
+    };
+  }
+
   rpc CreateApiKey(com.vectara.admin.CreateApiKeyRequest) returns (com.vectara.admin.CreateApiKeyResponse) {
     option (google.api.http) = {
       post: "/v1/create-api-key"