Index: src/__phutil_library_map__.php
===================================================================
--- src/__phutil_library_map__.php
+++ src/__phutil_library_map__.php
@@ -157,6 +157,7 @@
     'ArcanistUsageException' => 'exception/ArcanistUsageException.php',
     'ArcanistUserAbortException' => 'exception/usage/ArcanistUserAbortException.php',
     'ArcanistWhichWorkflow' => 'workflow/ArcanistWhichWorkflow.php',
+    'ArcanistWhoamiWorkflow' => 'workflow/ArcanistWhoamiWorkflow.php',
     'ArcanistWorkingCopyIdentity' => 'workingcopyidentity/ArcanistWorkingCopyIdentity.php',
     'ArcanistXHPASTLintNamingHook' => 'lint/linter/xhpast/ArcanistXHPASTLintNamingHook.php',
     'ArcanistXHPASTLintNamingHookTestCase' => 'lint/linter/xhpast/__tests__/ArcanistXHPASTLintNamingHookTestCase.php',
@@ -303,6 +304,7 @@
     'ArcanistUsageException' => 'Exception',
     'ArcanistUserAbortException' => 'ArcanistUsageException',
     'ArcanistWhichWorkflow' => 'ArcanistBaseWorkflow',
+    'ArcanistWhoamiWorkflow' => 'ArcanistBaseWorkflow',
     'ArcanistXHPASTLintNamingHookTestCase' => 'ArcanistTestCase',
     'ArcanistXHPASTLintTestSwitchHook' => 'ArcanistXHPASTLintSwitchHook',
     'ArcanistXHPASTLinter' => 'ArcanistBaseXHPASTLinter',
Index: src/workflow/ArcanistWhoamiWorkflow.php
===================================================================
--- /dev/null
+++ src/workflow/ArcanistWhoamiWorkflow.php
@@ -0,0 +1,54 @@
+<?php
+
+/**
+ * Displays the user name
+ *
+ * @group workflow
+ */
+final class ArcanistWhoamiWorkflow extends ArcanistBaseWorkflow {
+
+  private $tasks;
+
+  public function getWorkflowName() {
+    return 'whoami';
+  }
+
+  public function getCommandSynopses() {
+    return phutil_console_format(<<<EOTEXT
+      **whoami**
+EOTEXT
+      );
+  }
+
+  public function getCommandHelp() {
+    return phutil_console_format(<<<EOTEXT
+        View the user name associated with your current login.
+EOTEXT
+      );
+  }
+
+  public function requiresConduit() {
+    return true;
+  }
+
+  public function requiresAuthentication() {
+    return true;
+  }
+
+  public function getArguments() {
+    return array(
+    );
+  }
+
+  public function run() {
+    $conduit = $this->getConduit();
+    $user_info = $conduit->callMethodSynchronous(
+      'user.whoami',
+      array());
+    echo phutil_console_format(
+      "Logged in as <fg:blue>**%s**</fg> (<fg:blue>**%s**</fg>)\n",
+      $user_info['userName'],
+      $user_info['realName']);
+  }
+
+}