diff --git a/common/uxbox/common/exceptions.cljc b/common/uxbox/common/exceptions.cljc
deleted file mode 100644
index 5d1ca920a..000000000
--- a/common/uxbox/common/exceptions.cljc
+++ /dev/null
@@ -1,32 +0,0 @@
-;; This Source Code Form is subject to the terms of the Mozilla Public
-;; License, v. 2.0. If a copy of the MPL was not distributed with this
-;; file, You can obtain one at http://mozilla.org/MPL/2.0/.
-;;
-;; Copyright (c) 2016-2019 Andrey Antukh <niwi@niwi.nz>
-
-(ns uxbox.common.exceptions
-  "A helpers for work with exceptions."
-  (:require [clojure.spec.alpha :as s]))
-
-(s/def ::type keyword?)
-(s/def ::code keyword?)
-(s/def ::mesage string?)
-(s/def ::hint string?)
-
-(s/def ::error
-  (s/keys :req-un [::type]
-          :opt-un [::code
-                   ::hint
-                   ::mesage]))
-
-(defn error
-  [& {:keys [type code message hint cause] :as params}]
-  (s/assert ::error params)
-  (let [message (or message hint "")
-        payload (dissoc params :cause :message)]
-    (ex-info message payload cause)))
-
-#?(:clj
-   (defmacro raise
-     [& args]
-     `(throw (error ~@args))))
diff --git a/common/uxbox/common/pages.cljc b/common/uxbox/common/pages.cljc
index 6776f71c7..a3d44015c 100644
--- a/common/uxbox/common/pages.cljc
+++ b/common/uxbox/common/pages.cljc
@@ -1,8 +1,7 @@
 (ns uxbox.common.pages
   "A common (clj/cljs) functions and specs for pages."
   (:require
-   [clojure.spec.alpha :as s]
-   [uxbox.common.spec :as cs]))
+   [clojure.spec.alpha :as s]))
 
 ;; --- Specs
 
diff --git a/common/uxbox/common/spec.cljc b/common/uxbox/common/spec.cljc
deleted file mode 100644
index 250ffbb16..000000000
--- a/common/uxbox/common/spec.cljc
+++ /dev/null
@@ -1,132 +0,0 @@
-;; This Source Code Form is subject to the terms of the Mozilla Public
-;; License, v. 2.0. If a copy of the MPL was not distributed with this
-;; file, You can obtain one at http://mozilla.org/MPL/2.0/.
-;;
-;; Copyright (c) 2016-2019 Andrey Antukh <niwi@niwi.nz>
-
-(ns uxbox.common.spec
-  (:require
-   #?(:clj [datoteka.core :as fs])
-   [clojure.spec.alpha :as s]
-   [cuerdas.core :as str]
-   [expound.alpha :as expound]
-   [uxbox.common.exceptions :as ex]))
-
-(s/check-asserts true)
-
-;; --- Constants
-
-(def email-rx
-  #"^[a-zA-Z0-9_.+-]+@[a-zA-Z0-9-]+\.[a-zA-Z0-9-.]+$")
-
-(def uuid-rx
-  #"^[0-9a-f]{8}-[0-9a-f]{4}-[1-5][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$")
-
-;; --- Public API
-
-(defn conform
-  [spec data]
-  (let [result (s/conform spec data)]
-    (when (= result ::s/invalid)
-      (ex/raise :type :validation
-                :code :spec-validation
-                :explain (with-out-str
-                           (expound/printer data))
-                :data (::s/problems data)))
-    result))
-
-;; --- Predicates
-
-(defn email?
-  [v]
-  (and (string? v)
-       (re-matches email-rx v)))
-
-;; --- Conformers
-
-(defn- uuid-conformer
-  [v]
-  (cond
-    (uuid? v) v
-    (string? v)
-    (cond
-      (re-matches uuid-rx v)
-      #?(:clj (java.util.UUID/fromString v)
-         :cljs (uuid v))
-
-      (str/empty? v)
-      nil
-
-      :else
-      ::s/invalid)
-    :else ::s/invalid))
-
-(defn- integer-conformer
-  [v]
-  (cond
-    (integer? v) v
-    (string? v)
-    (if (re-matches #"^[-+]?\d+$" v)
-      (Long/parseLong v)
-      ::s/invalid)
-    :else ::s/invalid))
-
-(defn boolean-conformer
-  [v]
-  (cond
-    (boolean? v) v
-    (string? v)
-    (if (re-matches #"^(?:t|true|false|f|0|1)$" v)
-      (contains? #{"t" "true" "1"} v)
-      ::s/invalid)
-    :else ::s/invalid))
-
-(defn boolean-unformer
-  [v]
-  (if v "true" "false"))
-
-#?(:clj
-   (defn path-conformer
-     [v]
-     (cond
-       (string? v) (fs/path v)
-       (fs/path? v) v
-       :else ::s/invalid)))
-
-(defn- number-conformer
-  [v]
-  (cond
-    (number? v) v
-
-    (str/numeric? v)
-    #?(:clj (Double/parseDouble v)
-       :cljs (js/parseFloat v))
-
-    :else ::s/invalid))
-
-;; --- Default Specs
-
-(s/def ::string string?)
-(s/def ::integer (s/conformer integer-conformer str))
-(s/def ::uuid (s/conformer uuid-conformer str))
-(s/def ::boolean (s/conformer boolean-conformer boolean-unformer))
-(s/def ::number (s/conformer number-conformer str))
-
-(s/def ::inst inst?)
-(s/def ::positive pos?)
-(s/def ::negative neg?)
-(s/def ::uploaded-file any?)
-(s/def ::email email?)
-(s/def ::file any?)
-
-;; Clojure Specific
-#?(:clj
-   (do
-     (s/def ::bytes bytes?)
-     (s/def ::name ::string)
-     (s/def ::size ::integer)
-     (s/def ::mtype ::string)
-     (s/def ::path (s/conformer path-conformer str))
-     (s/def ::upload
-       (s/keys :req-un [::name ::path ::size ::mtype]))))
-