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
@@ -1235,6 +1235,8 @@
     'HarbormasterBuildLogPHIDType' => 'applications/harbormaster/phid/HarbormasterBuildLogPHIDType.php',
     'HarbormasterBuildLogQuery' => 'applications/harbormaster/query/HarbormasterBuildLogQuery.php',
     'HarbormasterBuildLogRenderController' => 'applications/harbormaster/controller/HarbormasterBuildLogRenderController.php',
+    'HarbormasterBuildLogSearchConduitAPIMethod' => 'applications/harbormaster/conduit/HarbormasterBuildLogSearchConduitAPIMethod.php',
+    'HarbormasterBuildLogSearchEngine' => 'applications/harbormaster/query/HarbormasterBuildLogSearchEngine.php',
     'HarbormasterBuildLogTestCase' => 'applications/harbormaster/__tests__/HarbormasterBuildLogTestCase.php',
     'HarbormasterBuildLogView' => 'applications/harbormaster/view/HarbormasterBuildLogView.php',
     'HarbormasterBuildLogViewController' => 'applications/harbormaster/controller/HarbormasterBuildLogViewController.php',
@@ -6522,6 +6524,7 @@
       'HarbormasterDAO',
       'PhabricatorPolicyInterface',
       'PhabricatorDestructibleInterface',
+      'PhabricatorConduitResultInterface',
     ),
     'HarbormasterBuildLogChunk' => 'HarbormasterDAO',
     'HarbormasterBuildLogChunkIterator' => 'PhutilBufferedIterator',
@@ -6529,6 +6532,8 @@
     'HarbormasterBuildLogPHIDType' => 'PhabricatorPHIDType',
     'HarbormasterBuildLogQuery' => 'PhabricatorCursorPagedPolicyAwareQuery',
     'HarbormasterBuildLogRenderController' => 'HarbormasterController',
+    'HarbormasterBuildLogSearchConduitAPIMethod' => 'PhabricatorSearchEngineAPIMethod',
+    'HarbormasterBuildLogSearchEngine' => 'PhabricatorApplicationSearchEngine',
     'HarbormasterBuildLogTestCase' => 'PhabricatorTestCase',
     'HarbormasterBuildLogView' => 'AphrontView',
     'HarbormasterBuildLogViewController' => 'HarbormasterController',
diff --git a/src/applications/harbormaster/conduit/HarbormasterBuildLogSearchConduitAPIMethod.php b/src/applications/harbormaster/conduit/HarbormasterBuildLogSearchConduitAPIMethod.php
new file mode 100644
--- /dev/null
+++ b/src/applications/harbormaster/conduit/HarbormasterBuildLogSearchConduitAPIMethod.php
@@ -0,0 +1,18 @@
+<?php
+
+final class HarbormasterBuildLogSearchConduitAPIMethod
+  extends PhabricatorSearchEngineAPIMethod {
+
+  public function getAPIMethodName() {
+    return 'harbormaster.log.search';
+  }
+
+  public function newSearchEngine() {
+    return new HarbormasterBuildLogSearchEngine();
+  }
+
+  public function getMethodSummary() {
+    return pht('Find out information about build logs.');
+  }
+
+}
diff --git a/src/applications/harbormaster/query/HarbormasterBuildLogQuery.php b/src/applications/harbormaster/query/HarbormasterBuildLogQuery.php
--- a/src/applications/harbormaster/query/HarbormasterBuildLogQuery.php
+++ b/src/applications/harbormaster/query/HarbormasterBuildLogQuery.php
@@ -23,19 +23,12 @@
     return $this;
   }
 
+  public function newResultObject() {
+    return new HarbormasterBuildLog();
+  }
+
   protected function loadPage() {
-    $table = new HarbormasterBuildLog();
-    $conn_r = $table->establishConnection('r');
-
-    $data = queryfx_all(
-      $conn_r,
-      'SELECT * FROM %T %Q %Q %Q',
-      $table->getTableName(),
-      $this->buildWhereClause($conn_r),
-      $this->buildOrderClause($conn_r),
-      $this->buildLimitClause($conn_r));
-
-    return $table->loadAllFromArray($data);
+    return $this->loadStandardPage($this->newResultObject());
   }
 
   protected function willFilterPage(array $page) {
@@ -63,33 +56,31 @@
     return $page;
   }
 
-  protected function buildWhereClause(AphrontDatabaseConnection $conn_r) {
-    $where = array();
+  protected function buildWhereClauseParts(AphrontDatabaseConnection $conn) {
+    $where = parent::buildWhereClauseParts($conn);
 
-    if ($this->ids) {
+    if ($this->ids !== null) {
       $where[] = qsprintf(
-        $conn_r,
+        $conn,
         'id IN (%Ld)',
         $this->ids);
     }
 
-    if ($this->phids) {
+    if ($this->phids !== null) {
       $where[] = qsprintf(
-        $conn_r,
+        $conn,
         'phid IN (%Ls)',
         $this->phids);
     }
 
-    if ($this->buildTargetPHIDs) {
+    if ($this->buildTargetPHIDs !== null) {
       $where[] = qsprintf(
-        $conn_r,
+        $conn,
         'buildTargetPHID IN (%Ls)',
         $this->buildTargetPHIDs);
     }
 
-    $where[] = $this->buildPagingClause($conn_r);
-
-    return $this->formatWhereClause($where);
+    return $where;
   }
 
   public function getQueryApplicationClass() {
diff --git a/src/applications/harbormaster/query/HarbormasterBuildLogSearchEngine.php b/src/applications/harbormaster/query/HarbormasterBuildLogSearchEngine.php
new file mode 100644
--- /dev/null
+++ b/src/applications/harbormaster/query/HarbormasterBuildLogSearchEngine.php
@@ -0,0 +1,79 @@
+<?php
+
+final class HarbormasterBuildLogSearchEngine
+  extends PhabricatorApplicationSearchEngine {
+
+  public function getResultTypeDescription() {
+    return pht('Harbormaster Build Logs');
+  }
+
+  public function getApplicationClassName() {
+    return 'PhabricatorHarbormasterApplication';
+  }
+
+  public function newQuery() {
+    return new HarbormasterBuildLogQuery();
+  }
+
+  protected function buildCustomSearchFields() {
+    return array(
+      id(new PhabricatorPHIDsSearchField())
+        ->setLabel(pht('Build Targets'))
+        ->setKey('buildTargetPHIDs')
+        ->setAliases(
+          array(
+            'buildTargetPHID',
+            'buildTargets',
+            'buildTarget',
+            'targetPHIDs',
+            'targetPHID',
+            'targets',
+            'target',
+          ))
+        ->setDescription(
+          pht('Search for logs that belong to a particular build target.')),
+    );
+  }
+
+  protected function buildQueryFromParameters(array $map) {
+    $query = $this->newQuery();
+
+    if ($map['buildTargetPHIDs']) {
+      $query->withBuildTargetPHIDs($map['buildTargetPHIDs']);
+    }
+
+    return $query;
+  }
+
+  protected function getURI($path) {
+    return '/harbormaster/log/'.$path;
+  }
+
+  protected function getBuiltinQueryNames() {
+    return array(
+      'all' => pht('All Builds'),
+    );
+  }
+
+  public function buildSavedQueryFromBuiltin($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 $builds,
+    PhabricatorSavedQuery $query,
+    array $handles) {
+
+    // For now, this SearchEngine is only for driving the API.
+    throw new PhutilMethodNotImplementedException();
+  }
+
+}
diff --git a/src/applications/harbormaster/storage/build/HarbormasterBuildLog.php b/src/applications/harbormaster/storage/build/HarbormasterBuildLog.php
--- a/src/applications/harbormaster/storage/build/HarbormasterBuildLog.php
+++ b/src/applications/harbormaster/storage/build/HarbormasterBuildLog.php
@@ -4,7 +4,8 @@
   extends HarbormasterDAO
   implements
     PhabricatorPolicyInterface,
-    PhabricatorDestructibleInterface {
+    PhabricatorDestructibleInterface,
+    PhabricatorConduitResultInterface {
 
   protected $buildTargetPHID;
   protected $logSource;
@@ -714,4 +715,36 @@
   }
 
 
+/* -(  PhabricatorConduitResultInterface  )---------------------------------- */
+
+
+  public function getFieldSpecificationsForConduit() {
+    return array(
+      id(new PhabricatorConduitSearchFieldSpecification())
+        ->setKey('buildTargetPHID')
+        ->setType('phid')
+        ->setDescription(pht('Build target this log is attached to.')),
+      id(new PhabricatorConduitSearchFieldSpecification())
+        ->setKey('byteLength')
+        ->setType('int')
+        ->setDescription(pht('Length of the log in bytes.')),
+      id(new PhabricatorConduitSearchFieldSpecification())
+        ->setKey('filePHID')
+        ->setType('phid?')
+        ->setDescription(pht('A file containing the log data.')),
+    );
+  }
+
+  public function getFieldValuesForConduit() {
+    return array(
+      'buildTargetPHID' => $this->getBuildTargetPHID(),
+      'byteLength' => (int)$this->getByteLength(),
+      'filePHID' => $this->getFilePHID(),
+    );
+  }
+
+  public function getConduitSearchAttachments() {
+    return array();
+  }
+
 }
diff --git a/src/view/control/AphrontTableView.php b/src/view/control/AphrontTableView.php
--- a/src/view/control/AphrontTableView.php
+++ b/src/view/control/AphrontTableView.php
@@ -248,7 +248,7 @@
 
     foreach ($col_classes as $key => $value) {
 
-      if (($sort_values[$key] !== null) &&
+      if (isset($sort_values[$key]) &&
           ($sort_values[$key] == $this->sortSelected)) {
         $value = trim($value.' sorted-column');
       }