diff --git a/client_library/client_binder.cc b/client_library/client_binder.cc
index 6f9b7b6..321dfc4 100644
--- a/client_library/client_binder.cc
+++ b/client_library/client_binder.cc
@@ -215,5 +215,16 @@
   return true;
 }
 
+bool BinderUpdateEngineClient::GetLastAttemptError(
+    int32_t* last_attempt_error) const {
+  int out_as_int;
+
+  if (!service_->GetLastAttemptError(&out_as_int).isOk())
+    return false;
+
+  *last_attempt_error = out_as_int;
+  return true;
+}
+
 }  // namespace internal
 }  // namespace update_engine
diff --git a/client_library/client_binder.h b/client_library/client_binder.h
index 562cee4..72f80dd 100644
--- a/client_library/client_binder.h
+++ b/client_library/client_binder.h
@@ -80,6 +80,8 @@
   bool RegisterStatusUpdateHandler(StatusUpdateHandler* handler) override;
   bool UnregisterStatusUpdateHandler(StatusUpdateHandler* handler) override;
 
+  bool GetLastAttemptError(int32_t* last_attempt_error) const override;
+
  private:
   class StatusUpdateCallback :
       public android::brillo::BnUpdateEngineStatusCallback {
diff --git a/client_library/client_dbus.cc b/client_library/client_dbus.cc
index 270a987..0d6b783 100644
--- a/client_library/client_dbus.cc
+++ b/client_library/client_dbus.cc
@@ -225,5 +225,10 @@
                             nullptr);
 }
 
+bool DBusUpdateEngineClient::GetLastAttemptError(
+    int32_t* last_attempt_error) const {
+  return proxy_->GetLastAttemptError(last_attempt_error, nullptr);
+}
+
 }  // namespace internal
 }  // namespace update_engine
diff --git a/client_library/client_dbus.h b/client_library/client_dbus.h
index 507fb5c..02a7e84 100644
--- a/client_library/client_dbus.h
+++ b/client_library/client_dbus.h
@@ -73,6 +73,8 @@
   bool RegisterStatusUpdateHandler(StatusUpdateHandler* handler) override;
   bool UnregisterStatusUpdateHandler(StatusUpdateHandler* handler) override;
 
+  bool GetLastAttemptError(int32_t* last_attempt_error) const override;
+
  private:
   void DBusStatusHandlersRegistered(const std::string& interface,
                                     const std::string& signal_name,
diff --git a/client_library/include/update_engine/client.h b/client_library/include/update_engine/client.h
index dc0fb8c..62ac5fb 100644
--- a/client_library/include/update_engine/client.h
+++ b/client_library/include/update_engine/client.h
@@ -112,6 +112,9 @@
   // Unregister a status update handler
   virtual bool UnregisterStatusUpdateHandler(StatusUpdateHandler* handler) = 0;
 
+  // Get the last UpdateAttempt error code.
+  virtual bool GetLastAttemptError(int32_t* last_attempt_error) const = 0;
+
  protected:
   // Use CreateInstance().
   UpdateEngineClient() = default;