diff --git a/resources/sql/20230427.semistructured.2.objectinstance.sql b/resources/sql/20230427.semistructured.2.objectinstance.sql
index f935943..8d6bbd3 100644
--- a/resources/sql/20230427.semistructured.2.objectinstance.sql
+++ b/resources/sql/20230427.semistructured.2.objectinstance.sql
@@ -1,16 +1,16 @@
 CREATE TABLE {$NAMESPACE}_semistructured.semistructured_objectinstance (
   id INT UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY,
   phid VARBINARY(64) NOT NULL,
   dateCreated INT UNSIGNED NOT NULL,
   dateModified INT UNSIGNED NOT NULL,
 
-  classPHID VARBINARY(64) NOT NULL,
+  classID INT UNSIGNED NOT NULL,
   status VARCHAR(32) NOT NULL COLLATE {$COLLATE_TEXT},
   rawData LONGTEXT NOT NULL COLLATE {$COLLATE_TEXT},
 
   UNIQUE KEY `key_phid` (phid),
-  KEY `classPHID` (classPHID)
+  KEY `classID` (classID)
 ) ENGINE=InnoDB, COLLATE {$COLLATE_TEXT};
 
--- CREATE TABLE {$NAMESPACE}_semistructured.semistructured_objectinstancetransaction
---   LIKE {$NAMESPACE}_file.file_transaction;
+CREATE TABLE {$NAMESPACE}_semistructured.semistructured_objectinstancetransaction
+  LIKE {$NAMESPACE}_file.file_transaction;
diff --git a/src/__phutil_library_map__.php b/src/__phutil_library_map__.php
index d6e343f..ccd04bd 100644
--- a/src/__phutil_library_map__.php
+++ b/src/__phutil_library_map__.php
@@ -1,73 +1,91 @@
 <?php
 
 /**
  * This file is automatically generated. Use 'arc liberate' to rebuild it.
  *
  * @generated
  * @phutil-library-version 2
  */
 phutil_register_library_map(array(
   '__library_version__' => 2,
   'class' => array(
     'SemiStructuredBaseController' => 'applications/semistruct/controller/SemiStructuredBaseController.php',
     'SemiStructuredDAO' => 'applications/semistruct/storage/SemiStructuredDAO.php',
     'SemiStructuredDataApplication' => 'applications/semistruct/application/SemiStructuredDataApplication.php',
     'SemiStructuredObjectInstance' => 'applications/semistruct/storage/SemiStructuredObjectInstance.php',
+    'SemiStructuredObjectInstanceClassTransaction' => 'applications/semistruct/xaction/instance/SemiStructuredObjectInstanceClassTransaction.php',
+    'SemiStructuredObjectInstanceController' => 'applications/semistruct/controller/instance/SemiStructuredObjectInstanceController.php',
+    'SemiStructuredObjectInstanceEditEngine' => 'applications/semistruct/editor/SemiStructuredObjectInstanceEditEngine.php',
     'SemiStructuredObjectInstancePHIDType' => 'applications/semistruct/phid/SemiStructuredObjectInstancePHIDType.php',
     'SemiStructuredObjectInstanceQuery' => 'applications/semistruct/query/SemiStructuredObjectInstanceQuery.php',
+    'SemiStructuredObjectInstanceRawDataTransaction' => 'applications/semistruct/xaction/instance/SemiStructuredObjectInstanceRawDataTransaction.php',
+    'SemiStructuredObjectInstanceTransaction' => 'applications/semistruct/storage/SemiStructuredObjectInstanceTransaction.php',
+    'SemiStructuredObjectInstanceTransactionEditor' => 'applications/semistruct/editor/SemiStructuredObjectInstanceTransactionEditor.php',
+    'SemiStructuredObjectInstanceTransactionType' => 'applications/semistruct/xaction/instance/SemiStructuredObjectInstanceTransactionType.php',
+    'SemiStructuredObjectInstanceViewController' => 'applications/semistruct/controller/instance/SemiStructuredObjectInstanceViewController.php',
+    'SemiStructuredObjectNewInstanceController' => 'applications/semistruct/controller/class/SemiStructuredObjectNewInstanceController.php',
     'SemiStructuredObjectType' => 'applications/semistruct/storage/SemiStructuredObjectType.php',
     'SemiStructuredObjectTypeController' => 'applications/semistruct/controller/class/SemiStructuredObjectTypeController.php',
     'SemiStructuredObjectTypeDescriptionTransaction' => 'applications/semistruct/xaction/class/SemiStructuredObjectTypeDescriptionTransaction.php',
     'SemiStructuredObjectTypeEditController' => 'applications/semistruct/controller/class/SemiStructuredObjectTypeEditController.php',
     'SemiStructuredObjectTypeEditEngine' => 'applications/semistruct/editor/SemiStructuredObjectTypeEditEngine.php',
     'SemiStructuredObjectTypeFerretEngine' => 'applications/semistruct/engine/SemiStructuredObjectTypeFerretEngine.php',
     'SemiStructuredObjectTypeListController' => 'applications/semistruct/controller/class/SemiStructuredObjectTypeListController.php',
     'SemiStructuredObjectTypeNameTransaction' => 'applications/semistruct/xaction/class/SemiStructuredObjectTypeNameTransaction.php',
     'SemiStructuredObjectTypePHIDType' => 'applications/semistruct/phid/SemiStructuredObjectTypePHIDType.php',
     'SemiStructuredObjectTypeQuery' => 'applications/semistruct/query/SemiStructuredObjectTypeQuery.php',
     'SemiStructuredObjectTypeSearchEngine' => 'applications/semistruct/query/SemiStructuredObjectTypeSearchEngine.php',
     'SemiStructuredObjectTypeTransaction' => 'applications/semistruct/storage/SemiStructuredObjectTypeTransaction.php',
     'SemiStructuredObjectTypeTransactionEditor' => 'applications/semistruct/editor/SemiStructuredObjectTypeTransactionEditor.php',
     'SemiStructuredObjectTypeTransactionType' => 'applications/semistruct/xaction/class/SemiStructuredObjectTypeTransactionType.php',
     'SemiStructuredObjectTypeViewController' => 'applications/semistruct/controller/class/SemiStructuredObjectTypeViewController.php',
     'SemiStructuredPatchList' => 'applications/semistruct/storage/SemiStructuredPatchList.php',
   ),
   'function' => array(),
   'xmap' => array(
     'SemiStructuredBaseController' => 'PhabricatorController',
     'SemiStructuredDAO' => 'PhabricatorLiskDAO',
     'SemiStructuredDataApplication' => 'PhabricatorApplication',
     'SemiStructuredObjectInstance' => array(
       'SemiStructuredDAO',
       'PhabricatorPolicyInterface',
       'PhabricatorApplicationTransactionInterface',
       'PhabricatorFlaggableInterface',
       'PhabricatorDestructibleInterface',
     ),
+    'SemiStructuredObjectInstanceClassTransaction' => 'SemiStructuredObjectInstanceTransactionType',
+    'SemiStructuredObjectInstanceController' => 'SemiStructuredBaseController',
+    'SemiStructuredObjectInstanceEditEngine' => 'PhabricatorEditEngine',
     'SemiStructuredObjectInstancePHIDType' => 'PhabricatorPHIDType',
     'SemiStructuredObjectInstanceQuery' => 'PhabricatorCursorPagedPolicyAwareQuery',
+    'SemiStructuredObjectInstanceRawDataTransaction' => 'SemiStructuredObjectInstanceTransactionType',
+    'SemiStructuredObjectInstanceTransaction' => 'PhabricatorModularTransaction',
+    'SemiStructuredObjectInstanceTransactionEditor' => 'PhabricatorApplicationTransactionEditor',
+    'SemiStructuredObjectInstanceTransactionType' => 'PhabricatorModularTransactionType',
+    'SemiStructuredObjectInstanceViewController' => 'SemiStructuredObjectInstanceController',
+    'SemiStructuredObjectNewInstanceController' => 'SemiStructuredObjectTypeController',
     'SemiStructuredObjectType' => array(
       'SemiStructuredDAO',
       'PhabricatorPolicyInterface',
       'PhabricatorApplicationTransactionInterface',
       'PhabricatorFlaggableInterface',
       'PhabricatorDestructibleInterface',
       'PhabricatorFerretInterface',
     ),
     'SemiStructuredObjectTypeController' => 'SemiStructuredBaseController',
     'SemiStructuredObjectTypeDescriptionTransaction' => 'SemiStructuredObjectTypeTransactionType',
     'SemiStructuredObjectTypeEditController' => 'PhabricatorDashboardController',
     'SemiStructuredObjectTypeEditEngine' => 'PhabricatorEditEngine',
     'SemiStructuredObjectTypeFerretEngine' => 'PhabricatorFerretEngine',
     'SemiStructuredObjectTypeListController' => 'SemiStructuredBaseController',
     'SemiStructuredObjectTypeNameTransaction' => 'SemiStructuredObjectTypeTransactionType',
     'SemiStructuredObjectTypePHIDType' => 'PhabricatorPHIDType',
     'SemiStructuredObjectTypeQuery' => 'PhabricatorCursorPagedPolicyAwareQuery',
     'SemiStructuredObjectTypeSearchEngine' => 'PhabricatorApplicationSearchEngine',
     'SemiStructuredObjectTypeTransaction' => 'PhabricatorModularTransaction',
     'SemiStructuredObjectTypeTransactionEditor' => 'PhabricatorApplicationTransactionEditor',
     'SemiStructuredObjectTypeTransactionType' => 'PhabricatorModularTransactionType',
     'SemiStructuredObjectTypeViewController' => 'SemiStructuredObjectTypeController',
     'SemiStructuredPatchList' => 'PhabricatorSQLPatchList',
   ),
 ));
diff --git a/src/application/SemiStructuredDataApplication.php b/src/application/SemiStructuredDataApplication.php
index 31f0911..6ec3103 100644
--- a/src/application/SemiStructuredDataApplication.php
+++ b/src/application/SemiStructuredDataApplication.php
@@ -1,29 +1,38 @@
 <?php
 
 final class SemiStructuredDataApplication extends PhabricatorApplication {
   public function getName() {
     return pht('Semi-Structured');
   }
 
   public function getShortDescription() {
     return pht('Work with evolving data sets.');
   }
 
   public function getBaseURI() {
     return '/semistruct/';
   }
 
   public function getRoutes() {
     return array(
         '/semistruct/' => array(
           '(?:query/(?P<queryKey>[^/]+)/)?' =>
             'SemiStructuredObjectTypeListController',
           $this->getEditRoutePattern('editclass/') =>
             'SemiStructuredObjectTypeEditController',
-          'type/(?:(?P<id>\d+)/)?' => 'SemiStructuredObjectTypeViewController',
+          'type/(?:(?P<id>\d+)/)?' => array(
+            '' => 'SemiStructuredObjectTypeViewController',
+            'new/' => 'SemiStructuredObjectNewInstanceController',
+          ),
+
+
+          $this->getEditRoutePattern('editobject/') =>
+            'SemiStructuredObjectInstanceEditController',
+          'instance/(?:(?P<id>\d+)/)?' =>
+            'SemiStructuredObjectInstanceViewController',
 
         ),
     );
   }
 
 }
diff --git a/src/controller/class/SemiStructuredObjectNewInstanceController.php b/src/controller/class/SemiStructuredObjectNewInstanceController.php
new file mode 100644
index 0000000..8e1ba73
--- /dev/null
+++ b/src/controller/class/SemiStructuredObjectNewInstanceController.php
@@ -0,0 +1,53 @@
+<?php
+
+final class SemiStructuredObjectNewInstanceController
+  extends SemiStructuredObjectTypeController {
+
+    public function handleRequest(AphrontRequest $request) {
+      $viewer = $request->getViewer();
+      $id = $request->getURIData('id');
+
+      $object_type = id(new SemiStructuredObjectTypeQuery())
+        ->setViewer($viewer)
+        ->withIDs(array($id))
+        ->executeOne();
+      if (!$object_type) {
+        return new Aphront404Response();
+      }
+
+      $this->setObjectType($object_type);
+
+      $object = SemiStructuredObjectInstance::initializeNewObjectInstance(
+        $viewer,
+        $object_type);
+
+      return id(new SemiStructuredObjectInstanceEditEngine())
+        ->setTargetObject($object)
+        ->setController($this)
+        ->buildResponse();
+
+
+      $crumbs = $this->buildApplicationCrumbs();
+      $title = $object_type->getName();
+
+      $header = $this->buildHeaderView();
+      // $curtain = $this->buildCurtain();
+
+
+      $view = id(new PHUITwoColumnView())
+        ->setHeader($header)
+          // ->setCurtain($curtain)
+        ->setMainColumn(array(
+          ))
+        ->addPropertySection(pht('Description'), "ixi");
+
+      $navigation = $this->buildSideNavView('view');
+
+      return $this->newPage()
+        ->setTitle($title)
+        ->setCrumbs($crumbs)
+        ->setPageObjectPHIDs(array($object_type->getPHID()))
+        ->setNavigation($navigation)
+        ->appendChild($view);
+    }
+  }
diff --git a/src/controller/class/SemiStructuredObjectTypeViewController.php b/src/controller/class/SemiStructuredObjectTypeViewController.php
index d75b288..d89fa34 100644
--- a/src/controller/class/SemiStructuredObjectTypeViewController.php
+++ b/src/controller/class/SemiStructuredObjectTypeViewController.php
@@ -1,114 +1,126 @@
 <?php
 
 final class SemiStructuredObjectTypeViewController
   extends SemiStructuredObjectTypeController {
 
   public function handleRequest(AphrontRequest $request) {
     $viewer = $request->getViewer();
     $id = $request->getURIData('id');
 
     $object_type = id(new SemiStructuredObjectTypeQuery())
       ->setViewer($viewer)
       ->withIDs(array($id))
       ->executeOne();
     if (!$object_type) {
       return new Aphront404Response();
     }
 
     $this->setObjectType($object_type);
 
     $crumbs = $this->buildApplicationCrumbs();
     $title = $object_type->getName();
 
     $header = $this->buildHeaderView();
     $curtain = $this->buildCurtain();
     $details = $this->buildDetailsView();
 
     // $timeline = $this->buildTransactionTimeline(
     //   $object_type,
     //   new PhabricatorBadgesTransactionQuery()); /// TODO
     $timeline = null;
 
     $comment_view = id(new SemiStructuredObjectTypeEditEngine())
       ->setViewer($viewer)
       ->buildEditEngineCommentView($object_type);
 
     $view = id(new PHUITwoColumnView())
       ->setHeader($header)
       ->setCurtain($curtain)
       ->setMainColumn(array(
+        // TODO add instance list here
           $timeline,
           $comment_view,
-        ))
+          ))
       ->addPropertySection(pht('Description'), $details);
 
+
     $navigation = $this->buildSideNavView('view');
 
     return $this->newPage()
       ->setTitle($title)
       ->setCrumbs($crumbs)
       ->setPageObjectPHIDs(array($object_type->getPHID()))
       ->setNavigation($navigation)
       ->appendChild($view);
   }
 
 private function buildDetailsView() {
     $viewer = $this->getViewer();
     $object_type = $this->getObjectType();
 
     $view = id(new PHUIPropertyListView())
       ->setUser($viewer);
 
     $description = $object_type->getDescription();
     if (strlen($description)) {
       $view->addTextContent(
         new PHUIRemarkupView($viewer, $description));
     }
 
     return $view;
   }
 
   private function buildCurtain() {
     $viewer = $this->getViewer();
     $object_type = $this->getObjectType();
 
     $can_edit = PhabricatorPolicyFilter::hasCapability(
       $viewer,
       $object_type,
       PhabricatorPolicyCapability::CAN_EDIT);
 
+    $can_create_instance = true;
+
     $id = $object_type->getID();
     $edit_uri = $this->getApplicationURI("/editclass/{$id}/");
+    $create_uri = $this->getApplicationURI("/type/{$id}/new/");
     $archive_uri = $this->getApplicationURI("/archive/{$id}/");
 
     $curtain = $this->newCurtainView($object_type);
 
     $curtain->addAction(
       id(new PhabricatorActionView())
         ->setName(pht('Edit Object Type'))
         ->setIcon('fa-pencil')
         ->setDisabled(!$can_edit)
         ->setHref($edit_uri));
 
+    $curtain->addAction(
+      id(new PhabricatorActionView())
+        ->setName(pht("Create New Instance"))
+        ->setIcon("fa-plus")
+        ->setDisabled(!$can_create_instance)
+        ->setHref($create_uri));
+
     if ($object_type->isArchived()) {
       $curtain->addAction(
         id(new PhabricatorActionView())
           ->setName(pht('Activate Object Type'))
           ->setIcon('fa-check')
           ->setDisabled(!$can_edit)
           ->setWorkflow($can_edit)
           ->setHref($archive_uri));
-    } else {
+    } else {/*
       $curtain->addAction(
         id(new PhabricatorActionView())
           ->setName(pht('Archive Object Type'))
           ->setIcon('fa-ban')
           ->setDisabled(!$can_edit)
           ->setWorkflow($can_edit)
-          ->setHref($archive_uri));
+          ->setHref($archive_uri)); */
     }
 
     return $curtain;
   }
 
 }
diff --git a/src/controller/instance/SemiStructuredObjectInstanceController.php b/src/controller/instance/SemiStructuredObjectInstanceController.php
new file mode 100644
index 0000000..781049c
--- /dev/null
+++ b/src/controller/instance/SemiStructuredObjectInstanceController.php
@@ -0,0 +1,89 @@
+<?php
+
+abstract class SemiStructuredObjectInstanceController
+  extends SemiStructuredBaseController {
+
+  private $objectType;
+
+  public function setObjectType(SemiStructuredObjectType $object_type) {
+    $this->objectType = $object_type;
+    return $this;
+  }
+
+  public function getObjectType() {
+    return $this->objectType;
+  }
+
+  // TODO ???
+  public function buildApplicationMenu() {
+    return $this->buildSideNavView()->getMenu();
+  }
+
+
+  protected function buildHeaderView() {
+    $viewer = $this->getViewer();
+    $object_type = $this->getObjectType();
+
+
+    if ($object_type->isArchived()) {
+      $status_icon = 'fa-ban';
+      $status_color = 'dark';
+    } else {
+      $status_icon = 'fa-check';
+      $status_color = 'bluegrey';
+    }
+    $status_name = idx(
+      SemiStructuredObjectType::getStatusNameMap(),
+      $object_type->getStatus());
+
+    return id(new PHUIHeaderView())
+      ->setHeader($object_type->getName())
+      ->setUser($viewer)
+      ->setPolicyObject($object_type)
+      ->setStatus($status_icon, $status_color, $status_name)
+      ->setHeaderIcon('fa-trophy');
+  }
+
+  protected function buildApplicationCrumbs() {
+    $object_type = $this->getObjectType();
+    $uri = $object_type->getURI();
+
+    $crumbs = parent::buildApplicationCrumbs();
+    $crumbs->addTextCrumb($object_type->getName(), $uri);
+    $crumbs->setBorder(true);
+    return $crumbs;
+  }
+
+  protected function buildSideNavView($filter = null) {
+    $viewer = $this->getViewer();
+    $object_type = $this->getObjectType();
+    $id = $object_type->getID();
+
+    $can_edit = PhabricatorPolicyFilter::hasCapability(
+      $viewer,
+      $object_type,
+      PhabricatorPolicyCapability::CAN_EDIT);
+
+    $nav = id(new AphrontSideNavFilterView())
+      ->setBaseURI(new PhutilURI($this->getApplicationURI()));
+
+    $nav->addLabel(pht('Object Type'));
+
+    $nav->addFilter(
+      'view',
+      pht('View Object Type'),
+      $object_type->getURI(),
+      'fa-trophy');
+
+    $nav->addFilter(
+      'instances',
+      pht('View Instances'),
+      $this->getApplicationURI("/recipients/{$id}/"),
+      'fa-group');
+
+    $nav->selectFilter($filter);
+
+    return $nav;
+  }
+
+}
diff --git a/src/controller/class/SemiStructuredObjectTypeViewController.php b/src/controller/instance/SemiStructuredObjectInstanceViewController.php
similarity index 94%
copy from src/controller/class/SemiStructuredObjectTypeViewController.php
copy to src/controller/instance/SemiStructuredObjectInstanceViewController.php
index d75b288..5b30eae 100644
--- a/src/controller/class/SemiStructuredObjectTypeViewController.php
+++ b/src/controller/instance/SemiStructuredObjectInstanceViewController.php
@@ -1,114 +1,114 @@
 <?php
 
-final class SemiStructuredObjectTypeViewController
-  extends SemiStructuredObjectTypeController {
+final class SemiStructuredObjectInstanceViewController
+  extends SemiStructuredObjectInstanceController {
 
   public function handleRequest(AphrontRequest $request) {
     $viewer = $request->getViewer();
     $id = $request->getURIData('id');
 
-    $object_type = id(new SemiStructuredObjectTypeQuery())
+    $object_type = id(new SemiStructuredObjectInstanceQuery())
       ->setViewer($viewer)
       ->withIDs(array($id))
       ->executeOne();
     if (!$object_type) {
       return new Aphront404Response();
     }
 
     $this->setObjectType($object_type);
 
     $crumbs = $this->buildApplicationCrumbs();
     $title = $object_type->getName();
 
     $header = $this->buildHeaderView();
     $curtain = $this->buildCurtain();
     $details = $this->buildDetailsView();
 
     // $timeline = $this->buildTransactionTimeline(
     //   $object_type,
     //   new PhabricatorBadgesTransactionQuery()); /// TODO
     $timeline = null;
 
     $comment_view = id(new SemiStructuredObjectTypeEditEngine())
       ->setViewer($viewer)
       ->buildEditEngineCommentView($object_type);
 
     $view = id(new PHUITwoColumnView())
       ->setHeader($header)
       ->setCurtain($curtain)
       ->setMainColumn(array(
           $timeline,
           $comment_view,
         ))
       ->addPropertySection(pht('Description'), $details);
 
     $navigation = $this->buildSideNavView('view');
 
     return $this->newPage()
       ->setTitle($title)
       ->setCrumbs($crumbs)
       ->setPageObjectPHIDs(array($object_type->getPHID()))
       ->setNavigation($navigation)
       ->appendChild($view);
   }
 
 private function buildDetailsView() {
     $viewer = $this->getViewer();
     $object_type = $this->getObjectType();
 
     $view = id(new PHUIPropertyListView())
       ->setUser($viewer);
 
     $description = $object_type->getDescription();
     if (strlen($description)) {
       $view->addTextContent(
         new PHUIRemarkupView($viewer, $description));
     }
 
     return $view;
   }
 
   private function buildCurtain() {
     $viewer = $this->getViewer();
     $object_type = $this->getObjectType();
 
     $can_edit = PhabricatorPolicyFilter::hasCapability(
       $viewer,
       $object_type,
       PhabricatorPolicyCapability::CAN_EDIT);
 
     $id = $object_type->getID();
     $edit_uri = $this->getApplicationURI("/editclass/{$id}/");
     $archive_uri = $this->getApplicationURI("/archive/{$id}/");
 
     $curtain = $this->newCurtainView($object_type);
 
     $curtain->addAction(
       id(new PhabricatorActionView())
         ->setName(pht('Edit Object Type'))
         ->setIcon('fa-pencil')
         ->setDisabled(!$can_edit)
         ->setHref($edit_uri));
 
     if ($object_type->isArchived()) {
       $curtain->addAction(
         id(new PhabricatorActionView())
           ->setName(pht('Activate Object Type'))
           ->setIcon('fa-check')
           ->setDisabled(!$can_edit)
           ->setWorkflow($can_edit)
           ->setHref($archive_uri));
     } else {
       $curtain->addAction(
         id(new PhabricatorActionView())
           ->setName(pht('Archive Object Type'))
           ->setIcon('fa-ban')
           ->setDisabled(!$can_edit)
           ->setWorkflow($can_edit)
           ->setHref($archive_uri));
     }
 
     return $curtain;
   }
 
 }
diff --git a/src/editor/SemiStructuredObjectInstanceEditEngine.php b/src/editor/SemiStructuredObjectInstanceEditEngine.php
new file mode 100644
index 0000000..44bbf78
--- /dev/null
+++ b/src/editor/SemiStructuredObjectInstanceEditEngine.php
@@ -0,0 +1,111 @@
+<?php
+
+final class SemiStructuredObjectInstanceEditEngine
+  extends PhabricatorEditEngine {
+
+  const ENGINECONST = 'sst:objectinstance';
+
+  private $objectType;
+
+  public function isEngineConfigurable() {
+    return false;
+  }
+
+  public function getEngineName() {
+    return pht('Object Instance');
+  }
+
+  public function getSummaryHeader() {
+    return pht('Edit Object Instance');
+  }
+
+  public function getSummaryText() {
+    return pht('This engine is used to modify object instances.');
+  }
+
+  public function getEngineApplicationClass() {
+    return 'SemiStructuredDataApplication';
+  }
+
+  public function setObjectType(SemiStructuredObjectType $object_type) {
+    $this->objectType = $object_type;
+    return $this;
+  }
+
+  protected function newEditableObject() {
+    $viewer = $this->getViewer();
+    return SemiStructuredObjectInstance::initializeNewObjectInstance(
+        $viewer,
+        $this->objectType);
+  }
+
+  protected function newObjectQuery() {
+    return new SemiStructuredObjectInstanceQuery();
+  }
+
+  protected function getObjectCreateTitleText($object) {
+    return pht('Create Object Instance');
+  }
+
+  protected function getObjectCreateButtonText($object) {
+    return pht('Create Object Instance');
+  }
+
+  protected function getObjectCreateCancelURI($object) {
+    // TODO if objjec has link to class - go to that class
+    return '/semistructured/';
+  }
+
+  protected function getEditorURI() {
+    return $this->getApplication()->getApplicationURI('editobject/');
+  }
+
+  protected function getObjectEditTitleText($object) {
+    return pht('Edit Object: %d', $object->getID());
+  }
+
+  protected function getObjectEditShortText($object) {
+    return pht('Edit Object');
+  }
+
+  protected function getObjectCreateShortText() {
+    return pht('Create Object Instance');
+  }
+
+  protected function getObjectName() {
+    return pht('Object Instance');
+  }
+
+  protected function getObjectViewURI($object) {
+    return $object->getURI();
+  }
+
+  protected function buildCustomEditFields($object) {
+
+    $fields = array(
+// TODO is this the best edit field?
+      id(new PhabricatorIntEditField())
+        ->setKey('classID')
+        ->setLabel(pht('Object Type'))
+        ->setDescription(pht('Type of the object.'))
+        ->setConduitDescription(pht('Set type of object.'))
+        ->setIsHidden(true)
+        ->setTransactionType(
+          SemiStructuredObjectInstanceClassTransaction::TRANSACTIONTYPE)
+        ->setIsRequired(true)
+        ->setValue($object->getClassID()),
+      id(new PhabricatorTextAreaEditField())
+        ->setKey('rawdata')
+        ->setLabel(pht('Raw data'))
+        ->setDescription(pht('Object unstructured data (JSON).'))
+        ->setConduitTypeDescription(pht('Object body (JSON).'))
+        ->setMonospaced(true)
+        ->setTransactionType(
+          SemiStructuredObjectInstanceRawDataTransaction::TRANSACTIONTYPE)
+        ->setValue($object->getRawData()),
+    );
+
+    return $fields;
+  }
+
+}
diff --git a/src/editor/SemiStructuredObjectInstanceTransactionEditor.php b/src/editor/SemiStructuredObjectInstanceTransactionEditor.php
new file mode 100644
index 0000000..172f87a
--- /dev/null
+++ b/src/editor/SemiStructuredObjectInstanceTransactionEditor.php
@@ -0,0 +1,28 @@
+<?php
+
+final class SemiStructuredObjectInstanceTransactionEditor
+  extends PhabricatorApplicationTransactionEditor {
+
+  public function getEditorApplicationClass() {
+    return 'SemiStructuredDataApplication';
+  }
+
+  public function getEditorObjectsDescription() {
+    return pht('Object Instance');
+  }
+
+  public function getTransactionTypes() {
+    $types = parent::getTransactionTypes();
+
+    // $types[] = PhabricatorTransactions::TYPE_VIEW_POLICY;
+    // $types[] = PhabricatorTransactions::TYPE_EDIT_POLICY;
+    $types[] = PhabricatorTransactions::TYPE_EDGE;
+
+    return $types;
+  }
+
+  protected function supportsSearch() {
+    return true;
+  }
+
+}
diff --git a/src/query/SemiStructuredObjectInstanceQuery.php b/src/query/SemiStructuredObjectInstanceQuery.php
index 233322e..2778c4c 100644
--- a/src/query/SemiStructuredObjectInstanceQuery.php
+++ b/src/query/SemiStructuredObjectInstanceQuery.php
@@ -1,100 +1,100 @@
 <?php
 
 final class SemiStructuredObjectInstanceQuery
   extends PhabricatorCursorPagedPolicyAwareQuery {
 
   private $ids;
   private $phids;
   private $classPHIDs;
   private $statuses;
   private $canEdit;
 
   public function withIDs(array $ids) {
     $this->ids = $ids;
     return $this;
   }
 
   public function withPHIDs(array $phids) {
     $this->phids = $phids;
     return $this;
   }
 
-  public function withClassPHIDs(array $classPHIDs) {
-    $this->classPHIDs = $classPHIDs;
+  public function withClassPHIDs(array $class_phids) {
+    $this->classPHIDs = $class_phids;
     return $this;
   }
 
   public function withStatuses(array $statuses) {
     $this->statuses = $statuses;
     return $this;
   }
 
 
   public function withCanEdit($can_edit) {
     $this->canEdit = $can_edit;
     return $this;
   }
 
   public function newResultObject() {
     return new SemiStructuredObjectInstance();
   }
 
   protected function didFilterPage(array $items) {
 
     $phids = mpull($items, 'getPHID');
 
     if ($this->canEdit) {
       $items = id(new PhabricatorPolicyFilter())
         ->setViewer($this->getViewer())
         ->requireCapabilities(array(
           PhabricatorPolicyCapability::CAN_EDIT,
         ))
         ->apply($items);
     }
 
     return $items;
   }
 
   protected function buildWhereClauseParts(AphrontDatabaseConnection $conn) {
     $where = parent::buildWhereClauseParts($conn);
 
     if ($this->ids !== null) {
       $where[] = qsprintf(
         $conn,
         'instances.id IN (%Ld)',
         $this->ids);
     }
 
     if ($this->phids !== null) {
       $where[] = qsprintf(
         $conn,
         'instances.phid IN (%Ls)',
         $this->phids);
     }
 
     if ($this->classPHIDs !== null) {
       $where[] = qsprintf(
         $conn,
         'instances.classPHID IN (%Ls)',
         $this->phids);
     }
 
     if ($this->statuses !== null) {
       $where[] = qsprintf(
         $conn,
         'instances.status IN (%Ls)',
         $this->statuses);
     }
 
     return $where;
   }
 
   public function getQueryApplicationClass() {
     return 'SemiStructuredDataApplication';
   }
 
   protected function getPrimaryTableAlias() {
     return 'instances';
   }
 
 }
diff --git a/src/storage/SemiStructuredObjectInstance.php b/src/storage/SemiStructuredObjectInstance.php
index ec37143..f5e06fc 100644
--- a/src/storage/SemiStructuredObjectInstance.php
+++ b/src/storage/SemiStructuredObjectInstance.php
@@ -1,111 +1,136 @@
 <?php
 
 final class SemiStructuredObjectInstance extends SemiStructuredDAO
   implements
     PhabricatorPolicyInterface,
     PhabricatorApplicationTransactionInterface,
     // PhabricatorSubscribableInterface,
     PhabricatorFlaggableInterface,
-    PhabricatorDestructibleInterface
-    // PhabricatorConduitResultInterface
-    {
+    // PhabricatorConduitResultInterface,
+    PhabricatorDestructibleInterface {
 
 
-  protected $classPHID;
+  protected $classID;
   protected $status;
   protected $rawData;
-
+// description?
+// comments?
 
 
   const STATUS_ACTIVE = 'active';
   const STATUS_ARCHIVED = 'archived';
 
+  private $class = self::ATTACHABLE;
+
 
   public static function initializeNewObjectInstance(
       PhabricatorUser $actor,
-      SemiStructuredObjectType $object_class) {
+      SemiStructuredObjectType $object_class = null) {
+
+    $object = id(new self())
+    // ->setViewPolicy(PhabricatorPolicies::getMostOpenPolicy()) // TODO take policies from class?
+    // ->setEditPolicy($actor->getPHID())
+    ->setStatus(self::STATUS_ACTIVE);
+
+    if ($object_class !== null) {
+      $object
+        ->setClassID($object_class->getID())
+        ->attachClass($object_class);
+    }
+
+    return $object;
+  }
+
+  public function attachClass(
+      SemiStructuredObjectType $object_class = null) {
+    $this->class = $object_class;
+    return $this;
+  }
 
-    return id(new self())
-      ->setClassPHID($object_class->getPHID())
-      ->setViewPolicy(PhabricatorPolicies::getMostOpenPolicy()) // TODO take policies from class?
-      ->setEditPolicy($actor->getPHID())
-      ->setStatus(self::STATUS_ACTIVE);
+  public function getClass() {
+    return $this->assertAttached($this->class);
   }
 
+  public function getURI() {
+    return urisprintf('/semistruct/instance/%d/', $this->getID());
+  }
+
+
   public static function getStatusNameMap() {
     return array(
       self::STATUS_ACTIVE => pht('Active'),
       self::STATUS_ARCHIVED => pht('Archived'),
     );
   }
 
   protected function getConfiguration() {
     return array(
       self::CONFIG_AUX_PHID => true,
       self::CONFIG_COLUMN_SCHEMA => array(
         'name' => 'sort255',
         'status' => 'text32',
-        'classPHID' => 'phid',
         'rawData' => 'text',
       ),
       self::CONFIG_KEY_SCHEMA => array(
-        'classPHID' => array(
-          'columns' => array('classPHID'),
+        'classID' => array(
+          'columns' => array('classID'),
         ),
       ),
     ) + parent::getConfiguration();
   }
 
 
   public function getPHIDType() {
     return SemiStructuredObjectInstancePHIDType::TYPECONST;
   }
 
 /* -(  PhabricatorApplicationTransactionInterface  )------------------------- */
 
 
   public function getApplicationTransactionEditor() {
-    // return new PhabricatorDashboardPanelTransactionEditor(); TODO
+    return new SemiStructuredObjectInstanceTransactionEditor();
   }
 
   public function getApplicationTransactionTemplate() {
-    // return new PhabricatorDashboardPanelTransaction(); TODO
+    return new SemiStructuredObjectInstanceTransaction();
   }
 
 
 /* -(  PhabricatorPolicyInterface  )----------------------------------------- */
 
 
   public function getCapabilities() {
     return array(
       PhabricatorPolicyCapability::CAN_VIEW,
       PhabricatorPolicyCapability::CAN_EDIT,
     );
   }
 
   public function getPolicy($capability) {
+    return;
     switch ($capability) {
+      // TODO
       case PhabricatorPolicyCapability::CAN_VIEW:
         return $this->getViewPolicy();
       case PhabricatorPolicyCapability::CAN_EDIT:
         return $this->getEditPolicy();
     }
   }
 
   public function hasAutomaticCapability($capability, PhabricatorUser $viewer) {
-    return false;
+    return true;
   }
 
 
 /* -(  PhabricatorDestructibleInterface  )----------------------------------- */
 
 
   public function destroyObjectPermanently(
     PhabricatorDestructionEngine $engine) {
 
     $this->openTransaction();
       $this->delete();
     $this->saveTransaction();
   }
 
 }
diff --git a/src/storage/SemiStructuredObjectInstanceTransaction.php b/src/storage/SemiStructuredObjectInstanceTransaction.php
new file mode 100644
index 0000000..92fe112
--- /dev/null
+++ b/src/storage/SemiStructuredObjectInstanceTransaction.php
@@ -0,0 +1,18 @@
+<?php
+
+final class SemiStructuredObjectInstanceTransaction
+  extends PhabricatorModularTransaction {
+
+  public function getApplicationName() {
+    return 'semistructured';
+  }
+
+  public function getApplicationTransactionType() {
+    return SemiStructuredObjectTypePHIDType::TYPECONST;
+  }
+
+  public function getBaseTransactionClass() {
+    return 'SemiStructuredObjectInstanceTransactionType';
+  }
+
+}
diff --git a/src/storage/SemiStructuredObjectType.php b/src/storage/SemiStructuredObjectType.php
index 642f611..be647b1 100644
--- a/src/storage/SemiStructuredObjectType.php
+++ b/src/storage/SemiStructuredObjectType.php
@@ -1,132 +1,133 @@
 <?php
 
 final class SemiStructuredObjectType extends SemiStructuredDAO
   implements
     PhabricatorPolicyInterface,
     PhabricatorApplicationTransactionInterface,
+    //PhabricatorMarkupInterface, ?
     // PhabricatorSubscribableInterface,
+    // PhabricatorConduitResultInterface
     PhabricatorFlaggableInterface,
     PhabricatorDestructibleInterface,
-    PhabricatorFerretInterface
-    // PhabricatorConduitResultInterface
-     {
+    PhabricatorFerretInterface {
 
 
+  protected $viewPolicy;
+  protected $editPolicy;
+
   protected $name;
   protected $status;
   protected $description;
-  protected $viewPolicy;
-  protected $editPolicy;
 
 // custom fields
 // icon/logo
 
 
 
   const STATUS_ACTIVE = 'active';
   const STATUS_ARCHIVED = 'archived';
 
 
   public static function initializeNewObjectType(PhabricatorUser $actor) {
     return id(new self())
       ->setName('')
       ->setViewPolicy(PhabricatorPolicies::getMostOpenPolicy())
       ->setEditPolicy($actor->getPHID())
       ->setStatus(self::STATUS_ACTIVE);
   }
 
   public static function getStatusNameMap() {
     return array(
       self::STATUS_ACTIVE => pht('Active'),
       self::STATUS_ARCHIVED => pht('Archived'),
     );
   }
 
   protected function getConfiguration() {
     return array(
       self::CONFIG_AUX_PHID => true,
       self::CONFIG_COLUMN_SCHEMA => array(
         'name' => 'sort255',
         'status' => 'text32',
         'description' => 'text',
       ),
     ) + parent::getConfiguration();
   }
 
   public function getPHIDType() {
     return SemiStructuredObjectTypePHIDType::TYPECONST;
   }
 
   public function isArchived() {
     return ($this->getStatus() == self::STATUS_ARCHIVED);
   }
 
   public function getURI() {
     return urisprintf('/semistruct/type/%d/', $this->getID());
   }
 
   public function getObjectName() {
     return pht('Object Type %d', $this->getID());
   }
 
   public function getIcon() {
     // TODO
     return 'fa-bear';
   }
 
 
 /* -(  PhabricatorApplicationTransactionInterface  )------------------------- */
 
 
   public function getApplicationTransactionEditor() {
     return new SemiStructuredObjectTypeTransactionEditor();
   }
 
   public function getApplicationTransactionTemplate() {
     return new SemiStructuredObjectTypeTransaction();
   }
 
 
 /* -(  PhabricatorPolicyInterface  )----------------------------------------- */
 
 
   public function getCapabilities() {
     return array(
       PhabricatorPolicyCapability::CAN_VIEW,
       PhabricatorPolicyCapability::CAN_EDIT,
       // TODO can-create-instances
     );
   }
 
   public function getPolicy($capability) {
     switch ($capability) {
       case PhabricatorPolicyCapability::CAN_VIEW:
         return $this->getViewPolicy();
       case PhabricatorPolicyCapability::CAN_EDIT:
         return $this->getEditPolicy();
     }
   }
 
   public function hasAutomaticCapability($capability, PhabricatorUser $viewer) {
     return false;
   }
 
 
 /* -(  PhabricatorDestructibleInterface  )----------------------------------- */
 
 
   public function destroyObjectPermanently(
     PhabricatorDestructionEngine $engine) {
 
     $this->openTransaction();
       $this->delete();
     $this->saveTransaction();
   }
 
 /* -(  PhabricatorFerretInterface  )----------------------------------------- */
 
   public function newFerretEngine() {
     return new SemiStructuredObjectTypeFerretEngine();
   }
 
 }
diff --git a/src/xaction/instance/SemiStructuredObjectInstanceClassTransaction.php b/src/xaction/instance/SemiStructuredObjectInstanceClassTransaction.php
new file mode 100644
index 0000000..4e0269f
--- /dev/null
+++ b/src/xaction/instance/SemiStructuredObjectInstanceClassTransaction.php
@@ -0,0 +1,38 @@
+<?php
+
+final class SemiStructuredObjectInstanceClassTransaction
+  extends SemiStructuredObjectInstanceTransactionType {
+
+  const TRANSACTIONTYPE = 'semist:instance:class';
+
+  public function generateOldValue($object) {
+    return $object->getClassID();
+  }
+
+  public function applyInternalEffects($object, $value) {
+    $object->setClassID($value);
+  }
+
+
+  public function validateTransactions($object, array $xactions) {
+    $errors = array();
+
+    if (!$xactions) {
+      if (!$object->getClassID()) {
+        $errors[] = $this->newInvalidError(pht('ClassID is required!'));
+      }
+    }
+
+    foreach ($xactions as $xaction) {
+      $new_value = $xaction->getNewValue();
+      $old_value = $xaction->getOldValue();
+
+      if ($old_value !== null && $new_value != $old_value) {
+        $errors[] = $this->newInvalidError(
+          pht('ClassID cannot be changed.'));
+      }
+    }
+
+    return $errors;
+  }
+}
diff --git a/src/xaction/instance/SemiStructuredObjectInstanceRawDataTransaction.php b/src/xaction/instance/SemiStructuredObjectInstanceRawDataTransaction.php
new file mode 100644
index 0000000..9816db4
--- /dev/null
+++ b/src/xaction/instance/SemiStructuredObjectInstanceRawDataTransaction.php
@@ -0,0 +1,82 @@
+<?php
+
+final class SemiStructuredObjectInstanceRawDataTransaction
+  extends SemiStructuredObjectInstanceTransactionType {
+
+  const TRANSACTIONTYPE = 'semist:instance:rawdata';
+
+  public function generateOldValue($object) {
+    return $object->getRawData();
+  }
+
+  public function applyInternalEffects($object, $value) {
+    $object->setRawData($value);
+  }
+
+  public function getTitle() {
+    return pht(
+      '%s updated the content of the object.',
+      $this->renderAuthor());
+  }
+
+  public function getTitleForFeed() {
+    return pht(
+      '%s updated the content for object %s.',
+      $this->renderAuthor(),
+      $this->renderObject());
+  }
+
+  public function getMailDiffSectionHeader() {
+    return pht('CHANGES TO CONTENT OF OBJECT INSTANCE');
+  }
+
+  public function hasChangeDetailView() {
+    return true;
+  }
+
+  public function newChangeDetailView() {
+    $viewer = $this->getViewer();
+
+    $old = $this->getOldValue();
+    $new = $this->getNewValue();
+
+    $json = new PhutilJSON();
+    // $old_json = $json->encodeFormatted($old);
+    // $new_json = $json->encodeFormatted($new);
+
+    return id(new PhabricatorApplicationTransactionTextDiffDetailView())
+      ->setViewer($viewer)
+      ->setOldText($old)
+      ->setNewText($new);
+  }
+
+
+  public function validateTransactions($object, array $xactions) {
+    $errors = array();
+
+    if (!$xactions) {
+      return $errors;
+    }
+
+    $json_parser = new PhutilJSONParser();
+
+    if ($this->isEmptyTextTransaction($object->getRawData(), $xactions)) {
+      $errors[] = $this->newRequiredError(
+        pht('Object must have content.'));
+    }
+
+    foreach ($xactions as $xaction) {
+      $new_value = $xaction->getNewValue();
+
+      try {
+        phutil_json_decode($new_value);
+      } catch (PhutilJSONParserException $ex) {
+        $errors[] = $this->newInvalidError(
+          pht('Object body must be valid json!'));
+      }
+    }
+
+    return $errors;
+  }
+
+}
diff --git a/src/xaction/instance/SemiStructuredObjectInstanceTransactionType.php b/src/xaction/instance/SemiStructuredObjectInstanceTransactionType.php
new file mode 100644
index 0000000..15a63e7
--- /dev/null
+++ b/src/xaction/instance/SemiStructuredObjectInstanceTransactionType.php
@@ -0,0 +1,4 @@
+<?php
+
+abstract class SemiStructuredObjectInstanceTransactionType
+  extends PhabricatorModularTransactionType {}