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
@@ -2025,6 +2025,7 @@
     'PhabricatorBcryptPasswordHasher' => 'infrastructure/util/password/PhabricatorBcryptPasswordHasher.php',
     'PhabricatorBinariesSetupCheck' => 'applications/config/check/PhabricatorBinariesSetupCheck.php',
     'PhabricatorBitbucketAuthProvider' => 'applications/auth/provider/PhabricatorBitbucketAuthProvider.php',
+    'PhabricatorBoardColumnsSearchEngineAttachment' => 'applications/project/engineextension/PhabricatorBoardColumnsSearchEngineAttachment.php',
     'PhabricatorBoardLayoutEngine' => 'applications/project/engine/PhabricatorBoardLayoutEngine.php',
     'PhabricatorBoardRenderingEngine' => 'applications/project/engine/PhabricatorBoardRenderingEngine.php',
     'PhabricatorBoardResponseEngine' => 'applications/project/engine/PhabricatorBoardResponseEngine.php',
@@ -6926,6 +6927,7 @@
     'PhabricatorBcryptPasswordHasher' => 'PhabricatorPasswordHasher',
     'PhabricatorBinariesSetupCheck' => 'PhabricatorSetupCheck',
     'PhabricatorBitbucketAuthProvider' => 'PhabricatorOAuth1AuthProvider',
+    'PhabricatorBoardColumnsSearchEngineAttachment' => 'PhabricatorSearchEngineAttachment',
     'PhabricatorBoardLayoutEngine' => 'Phobject',
     'PhabricatorBoardRenderingEngine' => 'Phobject',
     'PhabricatorBoardResponseEngine' => 'Phobject',
diff --git a/src/applications/maniphest/storage/ManiphestTask.php b/src/applications/maniphest/storage/ManiphestTask.php
--- a/src/applications/maniphest/storage/ManiphestTask.php
+++ b/src/applications/maniphest/storage/ManiphestTask.php
@@ -505,7 +505,10 @@
   }
 
   public function getConduitSearchAttachments() {
-    return array();
+    return array(
+      id(new PhabricatorBoardColumnsSearchEngineAttachment())
+        ->setAttachmentKey('columns'),
+    );
   }
 
 
diff --git a/src/applications/project/engineextension/PhabricatorBoardColumnsSearchEngineAttachment.php b/src/applications/project/engineextension/PhabricatorBoardColumnsSearchEngineAttachment.php
new file mode 100644
--- /dev/null
+++ b/src/applications/project/engineextension/PhabricatorBoardColumnsSearchEngineAttachment.php
@@ -0,0 +1,80 @@
+<?php
+
+final class PhabricatorBoardColumnsSearchEngineAttachment
+  extends PhabricatorSearchEngineAttachment {
+
+  public function getAttachmentName() {
+    return pht('Workboard Columns');
+  }
+
+  public function getAttachmentDescription() {
+    return pht('Get the workboard columns where an object appears.');
+  }
+
+  public function loadAttachmentData(array $objects, $spec) {
+    $viewer = $this->getViewer();
+
+    $objects = mpull($objects, null, 'getPHID');
+    $object_phids = array_keys($objects);
+
+    $edge_query = id(new PhabricatorEdgeQuery())
+      ->withSourcePHIDs($object_phids)
+      ->withEdgeTypes(
+        array(
+          PhabricatorProjectObjectHasProjectEdgeType::EDGECONST,
+        ));
+    $edge_query->execute();
+
+    $project_phids = $edge_query->getDestinationPHIDs();
+
+    $engine = id(new PhabricatorBoardLayoutEngine())
+      ->setViewer($viewer)
+      ->setBoardPHIDs($project_phids)
+      ->setObjectPHIDs($object_phids)
+      ->executeLayout();
+
+    $results = array();
+    foreach ($objects as $phid => $object) {
+      $board_phids = $edge_query->getDestinationPHIDs(array($phid));
+
+      $boards = array();
+      foreach ($board_phids as $board_phid) {
+        $columns = array();
+        foreach ($engine->getObjectColumns($board_phid, $phid) as $column) {
+          if ($column->getProxyPHID()) {
+            // When an object is in a proxy column, don't return it on this
+            // attachment. This information can be reconstructed from other
+            // queries, is something of an implementation detail, and seems
+            // unlikely to be interesting to API consumers.
+            continue 2;
+          }
+
+          $columns[] = $column->getRefForConduit();
+        }
+
+        // If a project has no workboard, the object won't appear on any
+        // columns. Just omit it from the result set.
+        if (!$columns) {
+          continue;
+        }
+
+        $boards[$board_phid] = array(
+          'columns' => $columns,
+        );
+      }
+
+      $results[$phid] = $boards;
+    }
+
+    return $results;
+  }
+
+  public function getAttachmentForObject($object, $data, $spec) {
+    $boards = idx($data, $object->getPHID(), array());
+
+    return array(
+      'boards' => $boards,
+    );
+  }
+
+}
diff --git a/src/applications/project/storage/PhabricatorProjectColumn.php b/src/applications/project/storage/PhabricatorProjectColumn.php
--- a/src/applications/project/storage/PhabricatorProjectColumn.php
+++ b/src/applications/project/storage/PhabricatorProjectColumn.php
@@ -183,6 +183,14 @@
     return sprintf('%s%012d', $group, $sequence);
   }
 
+  public function getRefForConduit() {
+    return array(
+      'id' => (int)$this->getID(),
+      'phid' => $this->getPHID(),
+      'name' => $this->getDisplayName(),
+    );
+  }
+
 
 /* -(  PhabricatorApplicationTransactionInterface  )------------------------- */