diff --git a/dev/storage/package.json b/dev/storage/package.json
index 3583a42f8c..bbb9aa3845 100644
--- a/dev/storage/package.json
+++ b/dev/storage/package.json
@@ -19,6 +19,7 @@
   },
   "dependencies": {
     "@anticrm/core": "~0.6.7",
-    "@anticrm/platform": "~0.6.3"
+    "@anticrm/platform": "~0.6.3",
+    "@anticrm/server-core": "~0.6.0"
   }
 }
diff --git a/dev/storage/src/storage.ts b/dev/storage/src/storage.ts
index 3421279af1..aa53e45d83 100644
--- a/dev/storage/src/storage.ts
+++ b/dev/storage/src/storage.ts
@@ -13,17 +13,10 @@
 // limitations under the License.
 //
 
-import type {
-  Tx,
-  Ref,
-  Doc,
-  Class,
-  DocumentQuery,
-  FindResult,
-  FindOptions
-} from '@anticrm/core'
+import type { Tx, Ref, Doc, Class, DocumentQuery, FindResult, FindOptions } from '@anticrm/core'
 import { getResource } from '@anticrm/platform'
 import core, { ModelDb, TxDb, Hierarchy, DOMAIN_TX, TxFactory } from '@anticrm/core'
+import serverCore from '@anticrm/server-core'
 
 import * as txJson from './model.tx.json'
 
@@ -66,7 +59,8 @@ class DevStorage implements ServerStorage {
     }
     await Promise.all([this.modeldb.tx(tx), this.txdb.tx(tx)])
     // invoke triggers
-    const triggers = this.hierarchy.getClass(tx.objectClass).triggers
+    const clazz = this.hierarchy.getClass(tx.objectClass)
+    const triggers = this.hierarchy.as(clazz, serverCore.mixin.Triggers).triggers
     if (triggers !== undefined) {
       const derived: Tx[] = []
       for (const trigger of triggers) {
diff --git a/server/core/src/index.ts b/server/core/src/index.ts
index 2d1a2c59dd..37ecd6f974 100644
--- a/server/core/src/index.ts
+++ b/server/core/src/index.ts
@@ -1,28 +1,45 @@
 //
 // Copyright © 2020, 2021 Anticrm Platform Contributors.
 // Copyright © 2021 Hardcore Engineering Inc.
-// 
+//
 // Licensed under the Eclipse Public License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License. You may
 // obtain a copy of the License at https://www.eclipse.org/legal/epl-2.0
-// 
+//
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// 
+//
 // See the License for the specific language governing permissions and
 // limitations under the License.
 //
 
-import type { Resource } from '@anticrm/platform'
-import type { Class, Obj, Arr, Tx, TxFactory } from '@anticrm/core'
+import type { Resource, Plugin } from '@anticrm/platform'
+import { plugin } from '@anticrm/platform'
+import type { Class, Obj, Arr, Tx, TxFactory, Mixin, Ref } from '@anticrm/core'
 
 /**
  * @public
  */
- export type Trigger = Resource<(tx: Tx, txFactory: TxFactory) => Promise<Tx[]>>
-
+export type Trigger = Resource<(tx: Tx, txFactory: TxFactory) => Promise<Tx[]>>
 
+/**
+ * @public
+ */
 export interface Triggers extends Class<Obj> {
-  triggers: Arr<Resource
-}
\ No newline at end of file
+  triggers: Arr<Trigger>
+}
+
+/**
+ * @public
+ */
+export const serverCoreId = 'server-core' as Plugin
+
+/**
+ * @public
+ */
+export default plugin(serverCoreId, {
+  mixin: {
+    Triggers: '' as Ref<Mixin<Triggers>>
+  }
+})