diff --git a/src/__phutil_library_map__.php b/src/__phutil_library_map__.php
--- a/src/__phutil_library_map__.php
+++ b/src/__phutil_library_map__.php
@@ -1436,6 +1436,8 @@
     'HarbormasterBuildStepImplementationTestCase' => 'applications/harbormaster/step/__tests__/HarbormasterBuildStepImplementationTestCase.php',
     'HarbormasterBuildStepPHIDType' => 'applications/harbormaster/phid/HarbormasterBuildStepPHIDType.php',
     'HarbormasterBuildStepQuery' => 'applications/harbormaster/query/HarbormasterBuildStepQuery.php',
+    'HarbormasterBuildStepSearchAPIMethod' => 'applications/harbormaster/conduit/HarbormasterBuildStepSearchAPIMethod.php',
+    'HarbormasterBuildStepSearchEngine' => 'applications/harbormaster/query/HarbormasterBuildStepSearchEngine.php',
     'HarbormasterBuildStepTransaction' => 'applications/harbormaster/storage/configuration/HarbormasterBuildStepTransaction.php',
     'HarbormasterBuildStepTransactionQuery' => 'applications/harbormaster/query/HarbormasterBuildStepTransactionQuery.php',
     'HarbormasterBuildTarget' => 'applications/harbormaster/storage/build/HarbormasterBuildTarget.php',
@@ -7627,6 +7629,7 @@
       'PhabricatorApplicationTransactionInterface',
       'PhabricatorPolicyInterface',
       'PhabricatorCustomFieldInterface',
+      'PhabricatorConduitResultInterface',
     ),
     'HarbormasterBuildStepCoreCustomField' => array(
       'HarbormasterBuildStepCustomField',
@@ -7639,6 +7642,8 @@
     'HarbormasterBuildStepImplementationTestCase' => 'PhabricatorTestCase',
     'HarbormasterBuildStepPHIDType' => 'PhabricatorPHIDType',
     'HarbormasterBuildStepQuery' => 'PhabricatorCursorPagedPolicyAwareQuery',
+    'HarbormasterBuildStepSearchAPIMethod' => 'PhabricatorSearchEngineAPIMethod',
+    'HarbormasterBuildStepSearchEngine' => 'PhabricatorApplicationSearchEngine',
     'HarbormasterBuildStepTransaction' => 'PhabricatorApplicationTransaction',
     'HarbormasterBuildStepTransactionQuery' => 'PhabricatorApplicationTransactionQuery',
     'HarbormasterBuildTarget' => array(
diff --git a/src/applications/harbormaster/conduit/HarbormasterBuildStepSearchAPIMethod.php b/src/applications/harbormaster/conduit/HarbormasterBuildStepSearchAPIMethod.php
new file mode 100644
--- /dev/null
+++ b/src/applications/harbormaster/conduit/HarbormasterBuildStepSearchAPIMethod.php
@@ -0,0 +1,18 @@
+<?php
+
+final class HarbormasterBuildStepSearchAPIMethod
+  extends PhabricatorSearchEngineAPIMethod {
+
+  public function getAPIMethodName() {
+    return 'harbormaster.step.search';
+  }
+
+  public function newSearchEngine() {
+    return new HarbormasterBuildStepSearchEngine();
+  }
+
+  public function getMethodSummary() {
+    return pht('Retrieve information about Harbormaster build steps.');
+  }
+
+}
diff --git a/src/applications/harbormaster/query/HarbormasterBuildStepSearchEngine.php b/src/applications/harbormaster/query/HarbormasterBuildStepSearchEngine.php
new file mode 100644
--- /dev/null
+++ b/src/applications/harbormaster/query/HarbormasterBuildStepSearchEngine.php
@@ -0,0 +1,58 @@
+<?php
+
+final class HarbormasterBuildStepSearchEngine
+  extends PhabricatorApplicationSearchEngine {
+
+  public function getResultTypeDescription() {
+    return pht('Harbormaster Build Steps');
+  }
+
+  public function getApplicationClassName() {
+    return 'PhabricatorHarbormasterApplication';
+  }
+
+  public function newQuery() {
+    return new HarbormasterBuildStepQuery();
+  }
+
+  protected function buildCustomSearchFields() {
+    return array();
+  }
+
+  protected function buildQueryFromParameters(array $map) {
+    $query = $this->newQuery();
+
+    return $query;
+  }
+
+  protected function getURI($path) {
+    return '/harbormaster/step/'.$path;
+  }
+
+  protected function getBuiltinQueryNames() {
+    return array(
+      'all' => pht('All Steps'),
+    );
+  }
+
+  public function buildSavedQueryFromBuiltin($query_key) {
+    $query = $this->newSavedQuery();
+    $query->setQueryKey($query_key);
+
+    switch ($query_key) {
+      case 'all':
+        return $query;
+    }
+
+    return parent::buildSavedQueryFromBuiltin($query_key);
+  }
+
+  protected function renderResultList(
+    array $plans,
+    PhabricatorSavedQuery $query,
+    array $handles) {
+    assert_instances_of($plans, 'HarbormasterBuildStep');
+    return null;
+  }
+
+}
diff --git a/src/applications/harbormaster/storage/configuration/HarbormasterBuildStep.php b/src/applications/harbormaster/storage/configuration/HarbormasterBuildStep.php
--- a/src/applications/harbormaster/storage/configuration/HarbormasterBuildStep.php
+++ b/src/applications/harbormaster/storage/configuration/HarbormasterBuildStep.php
@@ -4,7 +4,8 @@
   implements
     PhabricatorApplicationTransactionInterface,
     PhabricatorPolicyInterface,
-    PhabricatorCustomFieldInterface {
+    PhabricatorCustomFieldInterface,
+    PhabricatorConduitResultInterface {
 
   protected $name;
   protected $description;
@@ -169,5 +170,45 @@
     return $this;
   }
 
+/* -(  PhabricatorConduitResultInterface  )---------------------------------- */
+
+
+  public function getFieldSpecificationsForConduit() {
+    return array(
+      id(new PhabricatorConduitSearchFieldSpecification())
+        ->setKey('name')
+        ->setType('string')
+        ->setDescription(pht('The name of the build step.')),
+      id(new PhabricatorConduitSearchFieldSpecification())
+        ->setKey('description')
+        ->setType('remarkup')
+        ->setDescription(pht('The build step description.')),
+      id(new PhabricatorConduitSearchFieldSpecification())
+        ->setKey('buildPlanPHID')
+        ->setType('phid')
+        ->setDescription(
+          pht(
+            'The PHID of the build plan this build step belongs to.')),
+    );
+  }
+
+  public function getFieldValuesForConduit() {
+    // T6203: This can be removed once the field becomes non-nullable.
+    $name = $this->getName();
+    $name = phutil_string_cast($name);
+
+    return array(
+      'name' => $name,
+      'description' => array(
+        'raw' => $this->getDescription(),
+      ),
+      'buildPlanPHID' => $this->getBuildPlanPHID(),
+    );
+  }
+
+  public function getConduitSearchAttachments() {
+    return array();
+  }
+
 
 }