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
@@ -4884,6 +4884,7 @@
     'TokenGiveConduitAPIMethod' => 'applications/tokens/conduit/TokenGiveConduitAPIMethod.php',
     'TokenGivenConduitAPIMethod' => 'applications/tokens/conduit/TokenGivenConduitAPIMethod.php',
     'TokenQueryConduitAPIMethod' => 'applications/tokens/conduit/TokenQueryConduitAPIMethod.php',
+    'TransactionSearchConduitAPIMethod' => 'applications/transactions/conduit/TransactionSearchConduitAPIMethod.php',
     'UserConduitAPIMethod' => 'applications/people/conduit/UserConduitAPIMethod.php',
     'UserDisableConduitAPIMethod' => 'applications/people/conduit/UserDisableConduitAPIMethod.php',
     'UserEnableConduitAPIMethod' => 'applications/people/conduit/UserEnableConduitAPIMethod.php',
@@ -10631,6 +10632,7 @@
     'TokenGiveConduitAPIMethod' => 'TokenConduitAPIMethod',
     'TokenGivenConduitAPIMethod' => 'TokenConduitAPIMethod',
     'TokenQueryConduitAPIMethod' => 'TokenConduitAPIMethod',
+    'TransactionSearchConduitAPIMethod' => 'ConduitAPIMethod',
     'UserConduitAPIMethod' => 'ConduitAPIMethod',
     'UserDisableConduitAPIMethod' => 'UserConduitAPIMethod',
     'UserEnableConduitAPIMethod' => 'UserConduitAPIMethod',
diff --git a/src/applications/transactions/conduit/TransactionSearchConduitAPIMethod.php b/src/applications/transactions/conduit/TransactionSearchConduitAPIMethod.php
new file mode 100644
--- /dev/null
+++ b/src/applications/transactions/conduit/TransactionSearchConduitAPIMethod.php
@@ -0,0 +1,152 @@
+<?php
+
+final class TransactionSearchConduitAPIMethod
+  extends ConduitAPIMethod {
+
+  public function getAPIMethodName() {
+    return 'transaction.search';
+  }
+
+  public function getMethodDescription() {
+    return pht('Read transactions for an object.');
+  }
+
+  public function getMethodStatus() {
+    return self::METHOD_STATUS_UNSTABLE;
+  }
+
+  public function getMethodStatusDescription() {
+    return pht('This method is new and experimental.');
+  }
+
+  protected function defineParamTypes() {
+    return array(
+      'objectIdentifier' => 'phid|string',
+    ) + $this->getPagerParamTypes();
+  }
+
+  protected function defineReturnType() {
+    return 'list<dict>';
+  }
+
+  protected function defineErrorTypes() {
+    return array();
+  }
+
+  protected function execute(ConduitAPIRequest $request) {
+    $viewer = $request->getUser();
+    $pager = $this->newPager($request);
+
+    $object_name = $request->getValue('objectIdentifier', null);
+    if (!strlen($object_name)) {
+      throw new Exception(
+        pht(
+          'When calling "transaction.search", you must provide an object to '.
+          'retrieve transactions for.'));
+    }
+
+    $object = id(new PhabricatorObjectQuery())
+      ->setViewer($viewer)
+      ->withNames(array($object_name))
+      ->executeOne();
+    if (!$object) {
+      throw new Exception(
+        pht(
+          'No object "%s" exists.',
+          $object_name));
+    }
+
+    if (!($object instanceof PhabricatorApplicationTransactionInterface)) {
+      throw new Exception(
+        pht(
+          'Object "%s" does not implement "%s", so transactions can not '.
+          'be loaded for it.'));
+    }
+
+    $xaction_query = PhabricatorApplicationTransactionQuery::newQueryForObject(
+      $object);
+
+    $xactions = $xaction_query
+      ->withObjectPHIDs(array($object->getPHID()))
+      ->setViewer($viewer)
+      ->executeWithCursorPager($pager);
+
+    if ($xactions) {
+      $template = head($xactions)->getApplicationTransactionCommentObject();
+
+      $query = new PhabricatorApplicationTransactionTemplatedCommentQuery();
+
+      $comment_map = $query
+        ->setViewer($viewer)
+        ->setTemplate($template)
+        ->withTransactionPHIDs(mpull($xactions, 'getPHID'))
+        ->execute();
+
+      $comment_map = msort($comment_map, 'getCommentVersion');
+      $comment_map = array_reverse($comment_map);
+      $comment_map = mgroup($comment_map, 'getTransactionPHID');
+    } else {
+      $comment_map = array();
+    }
+
+    $data = array();
+    foreach ($xactions as $xaction) {
+      $comments = idx($comment_map, $xaction->getPHID());
+
+      $comment_data = array();
+      if ($comments) {
+        $removed = head($comments)->getIsDeleted();
+
+        foreach ($comments as $comment) {
+          if ($removed) {
+            // If the most recent version of the comment has been removed,
+            // don't show the history. This is for consistency with the web
+            // UI, which also prevents users from retrieving the content of
+            // removed comments.
+            $content = array(
+              'raw' => '',
+            );
+          } else {
+            $content = array(
+              'raw' => (string)$comment->getContent(),
+            );
+          }
+
+          $comment_data[] = array(
+            'id' => (int)$comment->getID(),
+            'phid' => (string)$comment->getPHID(),
+            'version' => (int)$comment->getCommentVersion(),
+            'authorPHID' => (string)$comment->getAuthorPHID(),
+            'dateCreated' => (int)$comment->getDateCreated(),
+            'dateModified' => (int)$comment->getDateModified(),
+            'removed' => (bool)$comment->getIsDeleted(),
+            'content' => $content,
+          );
+        }
+      }
+
+      $fields = array();
+
+      if (!$fields) {
+        $fields = (object)$fields;
+      }
+
+      $data[] = array(
+        'id' => (int)$xaction->getID(),
+        'phid' => (string)$xaction->getPHID(),
+        'authorPHID' => (string)$xaction->getAuthorPHID(),
+        'objectPHID' => (string)$xaction->getObjectPHID(),
+        'dateCreated' => (int)$xaction->getDateCreated(),
+        'dateModified' => (int)$xaction->getDateModified(),
+        'comments' => $comment_data,
+        'fields' => $fields,
+      );
+    }
+
+    $results = array(
+      'data' => $data,
+    );
+
+    return $this->addPagerResults($results, $pager);
+  }
+}