diff --git a/ui/metrics/metrics.go b/ui/metrics/metrics.go
index 7a3726b..9434924 100644
--- a/ui/metrics/metrics.go
+++ b/ui/metrics/metrics.go
@@ -18,6 +18,7 @@
 	"io/ioutil"
 	"os"
 	"runtime"
+	"strings"
 	"time"
 
 	"github.com/golang/protobuf/proto"
@@ -142,6 +143,10 @@
 	m.metrics.BuildDateTimestamp = proto.Int64(buildTimestamp.UnixNano() / int64(time.Second))
 }
 
+func (m *Metrics) SetBuildCommand(cmd []string) {
+	m.metrics.BuildCommand = proto.String(strings.Join(cmd, " "))
+}
+
 // exports the output to the file at outputPath
 func (m *Metrics) Dump(outputPath string) error {
 	// ignore the error if the hostname could not be retrieved as it
diff --git a/ui/metrics/metrics_proto/metrics.pb.go b/ui/metrics/metrics_proto/metrics.pb.go
index b8c5775..5db5ae5 100644
--- a/ui/metrics/metrics_proto/metrics.pb.go
+++ b/ui/metrics/metrics_proto/metrics.pb.go
@@ -203,10 +203,12 @@
 	// The hostname of the machine.
 	Hostname *string `protobuf:"bytes,24,opt,name=hostname" json:"hostname,omitempty"`
 	// The system resource information such as total physical memory.
-	SystemResourceInfo   *SystemResourceInfo `protobuf:"bytes,25,opt,name=system_resource_info,json=systemResourceInfo" json:"system_resource_info,omitempty"`
-	XXX_NoUnkeyedLiteral struct{}            `json:"-"`
-	XXX_unrecognized     []byte              `json:"-"`
-	XXX_sizecache        int32               `json:"-"`
+	SystemResourceInfo *SystemResourceInfo `protobuf:"bytes,25,opt,name=system_resource_info,json=systemResourceInfo" json:"system_resource_info,omitempty"`
+	// The build command that the user entered to the build system.
+	BuildCommand         *string  `protobuf:"bytes,26,opt,name=build_command,json=buildCommand" json:"build_command,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
 }
 
 func (m *MetricsBase) Reset()         { *m = MetricsBase{} }
@@ -414,6 +416,13 @@
 	return nil
 }
 
+func (m *MetricsBase) GetBuildCommand() string {
+	if m != nil && m.BuildCommand != nil {
+		return *m.BuildCommand
+	}
+	return ""
+}
+
 type BuildConfig struct {
 	UseGoma              *bool    `protobuf:"varint,1,opt,name=use_goma,json=useGoma" json:"use_goma,omitempty"`
 	UseRbe               *bool    `protobuf:"varint,2,opt,name=use_rbe,json=useRbe" json:"use_rbe,omitempty"`
@@ -972,90 +981,91 @@
 }
 
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+	0x34, 0xa9, 0x64, 0x0c, 0x00, 0x00,
 }
diff --git a/ui/metrics/metrics_proto/metrics.proto b/ui/metrics/metrics_proto/metrics.proto
index 44f8859..8d3933f 100644
--- a/ui/metrics/metrics_proto/metrics.proto
+++ b/ui/metrics/metrics_proto/metrics.proto
@@ -102,6 +102,9 @@
 
   // The system resource information such as total physical memory.
   optional SystemResourceInfo system_resource_info = 25;
+
+  // The build command that the user entered to the build system.
+  optional string build_command = 26;
 }
 
 message BuildConfig {