diff --git a/backend/src/app/rpc/commands/files.clj b/backend/src/app/rpc/commands/files.clj
index 3f9b416d3..be13e4fd6 100644
--- a/backend/src/app/rpc/commands/files.clj
+++ b/backend/src/app/rpc/commands/files.clj
@@ -305,17 +305,17 @@
 
 ;; --- COMMAND QUERY: get-file (by id)
 
-(sm/def! ::features
+(def schema:features
   [:schema
    {:title "FileFeatures"
     ::smdj/inline true
     :gen/gen (sg/subseq supported-features)}
    ::sm/set-of-strings])
 
-(sm/def! ::file
+(def schema:file
   [:map {:title "File"}
    [:id ::sm/uuid]
-   [:features ::features]
+   [:features schema:features]
    [:has-media-trimmed :boolean]
    [:comment-thread-seqn {:min 0} :int]
    [:name :string]
@@ -326,18 +326,18 @@
    [:created-at ::dt/instant]
    [:data {:optional true} :any]])
 
-(sm/def! ::permissions-mixin
+(def schema:permissions-mixin
   [:map {:title "PermissionsMixin"}
    [:permissions ::perms/permissions]])
 
-(sm/def! ::file-with-permissions
+(def schema:file-with-permissions
   [:merge {:title "FileWithPermissions"}
-   ::file
-   ::permissions-mixin])
+   schema:file
+   schema:permissions-mixin])
 
-(sm/def! ::get-file
+(def schema:get-file
   [:map {:title "get-file"}
-   [:features {:optional true} ::features]
+   [:features {:optional true} schema:features]
    [:id ::sm/uuid]
    [:project-id {:optional true} ::sm/uuid]])
 
@@ -377,8 +377,8 @@
   {::doc/added "1.17"
    ::cond/get-object #(get-minimal-file %1 (:id %2))
    ::cond/key-fn get-file-etag
-   ::sm/params ::get-file
-   ::sm/result ::file-with-permissions}
+   ::sm/params schema:get-file
+   ::sm/result schema:file-with-permissions}
   [{:keys [::db/pool] :as cfg} {:keys [::rpc/profile-id id features project-id] :as params}]
   (dm/with-open [conn (db/open pool)]
     (let [perms (get-permissions conn profile-id id)]
@@ -390,14 +390,14 @@
 
 ;; --- COMMAND QUERY: get-file-fragment (by id)
 
-(sm/def! ::file-fragment
+(def schema:file-fragment
   [:map {:title "FileFragment"}
    [:id ::sm/uuid]
    [:file-id ::sm/uuid]
    [:created-at ::dt/instant]
    [:content any?]])
 
-(sm/def! ::get-file-fragment
+(def schema:get-file-fragment
   [:map {:title "get-file-fragment"}
    [:file-id ::sm/uuid]
    [:fragment-id ::sm/uuid]
@@ -411,8 +411,8 @@
 (sv/defmethod ::get-file-fragment
   "Retrieve a file by its ID. Only authenticated users."
   {::doc/added "1.17"
-   ::sm/params ::get-file-fragment
-   ::sm/result ::file-fragment}
+   ::sm/params schema:get-file-fragment
+   ::sm/result schema:file-fragment}
   [{:keys [::db/pool] :as cfg} {:keys [::rpc/profile-id file-id fragment-id share-id] }]
   (dm/with-open [conn (db/open pool)]
     (let [perms (get-permissions conn profile-id file-id share-id)]
@@ -447,12 +447,18 @@
                      (assoc :thumbnail-uri (resolve-public-uri media-id)))
                  (dissoc row :media-id))))))
 
+(def schema:get-project-files
+  [:map {:title "get-project-files"}
+   [:project-id ::sm/uuid]])
+
+(def schema:files
+  [:vector schema:file])
+
 (sv/defmethod ::get-project-files
   "Get all files for the specified project."
   {::doc/added "1.17"
-   ::sm/params [:map {:title "get-project-files"}
-                [:project-id ::sm/uuid]]
-   ::sm/result [:vector ::file]}
+   ::sm/params schema:get-project-files
+   ::sm/result schema:files}
   [{:keys [::db/pool] :as cfg} {:keys [::rpc/profile-id project-id]}]
   (dm/with-open [conn (db/open pool)]
     (projects/check-read-permissions! conn profile-id project-id)
@@ -463,11 +469,14 @@
 
 (declare get-has-file-libraries)
 
+(def schema:has-file-libraries
+  [:map {:title "has-file-libraries"}
+   [:file-id ::sm/uuid]])
+
 (sv/defmethod ::has-file-libraries
   "Checks if the file has libraries. Returns a boolean"
   {::doc/added "1.15.1"
-   ::sm/params [:map {:title "has-file-libraries"}
-                [:file-id ::sm/uuid]]
+   ::sm/params schema:has-file-libraries
    ::sm/result :boolean}
   [{:keys [::db/pool] :as cfg} {:keys [::rpc/profile-id file-id]}]
   (dm/with-open [conn (db/open pool)]
@@ -522,13 +531,13 @@
       (uuid? object-id)
       (prune-objects object-id))))
 
-(sm/def! ::get-page
+(def schema:get-page
   [:map {:title "GetPage"}
    [:file-id ::sm/uuid]
    [:page-id {:optional true} ::sm/uuid]
    [:share-id {:optional true} ::sm/uuid]
    [:object-id {:optional true} ::sm/uuid]
-   [:features {:optional true} ::features]])
+   [:features {:optional true} schema:features]])
 
 (sv/defmethod ::get-page
   "Retrieves the page data from file and returns it. If no page-id is
@@ -541,7 +550,7 @@
 
   Mainly used for rendering purposes."
   {::doc/added "1.17"
-   ::sm/params ::get-page}
+   ::sm/params schema:get-page}
   [{:keys [::db/pool] :as cfg} {:keys [::rpc/profile-id file-id share-id] :as params}]
   (dm/with-open [conn (db/open pool)]
     (let [perms (get-permissions conn profile-id file-id share-id)]
diff --git a/backend/src/app/rpc/commands/files_thumbnails.clj b/backend/src/app/rpc/commands/files_thumbnails.clj
index 4369d043d..ceb40be9d 100644
--- a/backend/src/app/rpc/commands/files_thumbnails.clj
+++ b/backend/src/app/rpc/commands/files_thumbnails.clj
@@ -215,18 +215,25 @@
           :always
           (update :objects assoc-thumbnails page-id thumbs))))))
 
+(def ^:private schema:get-file-data-for-thumbnail
+  [:map {:title "get-file-data-for-thumbnail"}
+   [:file-id ::sm/uuid]
+   [:features {:optional true} files/schema:features]])
+
+(def ^:private schema:partial-file
+  [:map {:title "PartialFile"}
+   [:id ::sm/uuid]
+   [:revn {:min 0} :int]
+   [:page :any]])
+
 (sv/defmethod ::get-file-data-for-thumbnail
   "Retrieves the data for generate the thumbnail of the file. Used
   mainly for render thumbnails on dashboard."
 
   {::doc/added "1.17"
-   ::sm/params [:map {:title "get-file-data-for-thumbnail"}
-                [:file-id ::sm/uuid]
-                [:features {:optional true} ::files/features]]
-   ::sm/result [:map {:title "PartialFile"}
-                [:id ::sm/uuid]
-                [:revn {:min 0} :int]
-                [:page :any]]}
+   ::sm/params schema:get-file-data-for-thumbnail
+   ::sm/result schema:partial-file}
+
   [{:keys [::db/pool] :as cfg} {:keys [::rpc/profile-id file-id features] :as props}]
   (dm/with-open [conn (db/open pool)]
     (files/check-read-permissions! conn profile-id file-id)
diff --git a/backend/src/app/rpc/commands/files_update.clj b/backend/src/app/rpc/commands/files_update.clj
index ad8e9ac75..2b9b94d51 100644
--- a/backend/src/app/rpc/commands/files_update.clj
+++ b/backend/src/app/rpc/commands/files_update.clj
@@ -14,7 +14,6 @@
    [app.common.pages.changes :as cpc]
    [app.common.schema :as sm]
    [app.common.schema.generators :as smg]
-   [app.common.spec :as us]
    [app.common.types.file :as ctf]
    [app.common.uuid :as uuid]
    [app.config :as cf]
@@ -32,37 +31,7 @@
    [app.util.objects-map :as omap]
    [app.util.pointer-map :as pmap]
    [app.util.services :as sv]
-   [app.util.time :as dt]
-   [clojure.spec.alpha :as s]))
-
-;; --- SPECS
-
-(s/def ::changes
-  (s/coll-of map? :kind vector?))
-
-(s/def ::hint-origin ::us/keyword)
-(s/def ::hint-events
-  (s/every ::us/keyword :kind vector?))
-
-(s/def ::change-with-metadata
-  (s/keys :req-un [::changes]
-          :opt-un [::hint-origin
-                   ::hint-events]))
-
-(s/def ::changes-with-metadata
-  (s/every ::change-with-metadata :kind vector?))
-
-(s/def ::session-id ::us/uuid)
-(s/def ::revn ::us/integer)
-(s/def ::update-file
-  (s/and
-   (s/keys :req [::rpc/profile-id]
-           :req-un [::files/id ::session-id ::revn]
-           :opt-un [::changes ::changes-with-metadata ::features])
-   (fn [o]
-     (or (contains? o :changes)
-         (contains? o :changes-with-metadata)))))
-
+   [app.util.time :as dt]))
 
 ;; --- SCHEMA
 
diff --git a/backend/src/app/rpc/commands/viewer.clj b/backend/src/app/rpc/commands/viewer.clj
index e7db69ece..6ee197734 100644
--- a/backend/src/app/rpc/commands/viewer.clj
+++ b/backend/src/app/rpc/commands/viewer.clj
@@ -83,7 +83,7 @@
   [:map {:title "get-view-only-bundle"}
    [:file-id ::sm/uuid]
    [:share-id {:optional true} ::sm/uuid]
-   [:features {:optional true} ::files/features]])
+   [:features {:optional true} files/schema:features]])
 
 (sv/defmethod ::get-view-only-bundle
   {::rpc/auth false