diff --git a/src/applications/conduit/method/differential/ConduitAPI_differential_Method.php b/src/applications/conduit/method/differential/ConduitAPI_differential_Method.php
index 32d78cf88e..51c933ca81 100644
--- a/src/applications/conduit/method/differential/ConduitAPI_differential_Method.php
+++ b/src/applications/conduit/method/differential/ConduitAPI_differential_Method.php
@@ -32,4 +32,31 @@ abstract class ConduitAPI_differential_Method extends ConduitAPIMethod {
   }
 
 
+  protected function buildInlineInfoDictionary(
+    DifferentialInlineComment $inline,
+    DifferentialChangeset $changeset = null) {
+
+    $file_path = null;
+    $diff_id = null;
+    if ($changeset) {
+      $file_path = $inline->getIsNewFile()
+        ? $changeset->getFilename()
+        : $changeset->getOldFile();
+
+      $diff_id = $changeset->getDiffID();
+    }
+
+    return array(
+      'id'          => $inline->getID(),
+      'authorPHID'  => $inline->getAuthorPHID(),
+      'filePath'    => $file_path,
+      'isNewFile'   => $inline->getIsNewFile(),
+      'lineNumber'  => $inline->getLineNumber(),
+      'lineLength'  => $inline->getLineLength(),
+      'diffID'      => $diff_id,
+      'content'     => $inline->getContent(),
+    );
+  }
+
+
 }
diff --git a/src/applications/conduit/method/differential/ConduitAPI_differential_createinline_Method.php b/src/applications/conduit/method/differential/ConduitAPI_differential_createinline_Method.php
index 0ffa7fd30c..a9dfa7d743 100644
--- a/src/applications/conduit/method/differential/ConduitAPI_differential_createinline_Method.php
+++ b/src/applications/conduit/method/differential/ConduitAPI_differential_createinline_Method.php
@@ -20,7 +20,7 @@
  * @group conduit
  */
 final class ConduitAPI_differential_createinline_Method
-  extends ConduitAPIMethod {
+  extends ConduitAPI_differential_Method {
 
   public function getMethodDescription() {
     return "Add an inline comment to a Differential revision.";
@@ -32,9 +32,9 @@ final class ConduitAPI_differential_createinline_Method
       'diffID'     => 'optional diffid',
       'filePath'   => 'required string',
       'isNewFile'  => 'required bool',
-      'lineStart'  => 'required int',
-      'lineCount'  => 'optional int',
-      'message'    => 'required string',
+      'lineNumber' => 'required int',
+      'lineLength' => 'optional int',
+      'content'    => 'required string',
     );
   }
 
@@ -106,25 +106,16 @@ final class ConduitAPI_differential_createinline_Method
       ->setRevisionID($rid)
       ->setChangesetID($cid)
       ->setAuthorPHID($request->getUser()->getPHID())
-      ->setContent($request->getValue('message'))
+      ->setContent($request->getValue('content'))
       ->setIsNewFile($request->getValue('isNewFile'))
-      ->setLineNumber($request->getValue('lineStart'))
-      ->setLineLength($request->getValue('lineCount', 0))
+      ->setLineNumber($request->getValue('lineNumber'))
+      ->setLineLength($request->getValue('lineLength', 0))
       ->save();
 
     // Load everything again, just to be safe.
     $changeset = id(new DifferentialChangeset())
       ->load($inline->getChangesetID());
-    return array(
-      'filePath' => ($inline->getIsNewFile() ?
-        $changeset->getFilename() :
-        $changeset->getOldFile()),
-      'isNewFile' => $inline->getIsNewFile(),
-      'lineNumber' => $inline->getLineNumber(),
-      'lineLength' => $inline->getLineLength(),
-      'diffID' => $changeset->getDiffID(),
-      'content' => $inline->getContent(),
-    );
+    return $this->buildInlineInfoDictionary($inline, $changeset);
   }
 
 }
diff --git a/src/applications/conduit/method/differential/ConduitAPI_differential_getrevisioncomments_Method.php b/src/applications/conduit/method/differential/ConduitAPI_differential_getrevisioncomments_Method.php
index 5f09a73fb8..8d71da0149 100644
--- a/src/applications/conduit/method/differential/ConduitAPI_differential_getrevisioncomments_Method.php
+++ b/src/applications/conduit/method/differential/ConduitAPI_differential_getrevisioncomments_Method.php
@@ -20,7 +20,7 @@
  * @group conduit
  */
 final class ConduitAPI_differential_getrevisioncomments_Method
-  extends ConduitAPIMethod {
+  extends ConduitAPI_differential_Method {
 
   public function getMethodDescription() {
     return "Retrieve Differential Revision Comments.";
@@ -81,23 +81,10 @@ final class ConduitAPI_differential_getrevisioncomments_Method
       if ($with_inlines) {
         $result['inlines'] = array();
         foreach (idx($inlines, $comment->getID(), array()) as $inline) {
-          $file_path = null;
-          $diff_id = null;
           $changeset = idx($changesets, $inline->getChangesetID());
-          if ($changeset) {
-            $file_path = ($inline->getIsNewFile() ?
-              $changeset->getFilename() :
-              $changeset->getOldFile());
-            $diff_id = $changeset->getDiffID();
-          }
-          $result['inlines'][] = array(
-            'filePath' => $file_path,
-            'isNewFile' => $inline->getIsNewFile(),
-            'lineNumber' => $inline->getLineNumber(),
-            'lineLength' => $inline->getLineLength(),
-            'diffID' => $diff_id,
-            'content' => $inline->getContent(),
-          );
+          $result['inlines'][] = $this->buildInlineInfoDictionary(
+            $inline,
+            $changeset);
         }
         // TODO: Put synthetic inlines without an attached comment somewhere.
       }