diff --git a/common/src/app/common/files/builder.cljc b/common/src/app/common/files/builder.cljc
index 4536fb7cba..4354986b8d 100644
--- a/common/src/app/common/files/builder.cljc
+++ b/common/src/app/common/files/builder.cljc
@@ -485,6 +485,13 @@
         (commit-change change1)
         (commit-change change2))))
 
+(defn add-tokens-lib
+  [state tokens-lib]
+  (-> state
+      (commit-change
+       {:type :set-tokens-lib
+        :tokens-lib tokens-lib})))
+
 (defn delete-shape
   [file id]
   (commit-change
diff --git a/common/src/app/common/files/changes.cljc b/common/src/app/common/files/changes.cljc
index bfbd8db89f..a0bc457fee 100644
--- a/common/src/app/common/files/changes.cljc
+++ b/common/src/app/common/files/changes.cljc
@@ -371,7 +371,7 @@
    [:set-tokens-lib
     [:map {:title "SetTokensLib"}
      [:type [:= :set-tokens-lib]]
-     [:tokens-lib ::sm/any]]]  ;; TODO: we should define a plain object schema for tokens-lib
+     [:tokens-lib ctob/schema:tokens-lib]]]
 
    [:set-token
     [:map {:title "SetTokenChange"}
diff --git a/common/src/app/common/types/tokens_lib.cljc b/common/src/app/common/types/tokens_lib.cljc
index d0c44daf7e..48ba6b8a5b 100644
--- a/common/src/app/common/types/tokens_lib.cljc
+++ b/common/src/app/common/types/tokens_lib.cljc
@@ -7,10 +7,11 @@
 (ns app.common.types.tokens-lib
   (:require
    #?(:clj [app.common.fressian :as fres])
-   #?(:clj [clojure.data.json :as json])
+   #?(:clj [clojure.data.json :as c.json])
    [app.common.data :as d]
    [app.common.data.macros :as dm]
    [app.common.files.helpers :as cfh]
+   [app.common.json :as json]
    [app.common.path-names :as cpn]
    [app.common.schema :as sm]
    [app.common.schema.generators :as sg]
@@ -198,8 +199,8 @@
      :tokens tokens})
 
   #?@(:clj
-      [json/JSONWriter
-       (-write [this writter options] (json/-write (datafy this) writter options))])
+      [c.json/JSONWriter
+       (-write [this writter options] (c.json/-write (datafy this) writter options))])
 
   INamedItem
   (get-id [_]
@@ -912,6 +913,7 @@ Will return a value that matches this schema:
   (get-tokens [_ set-id] "return a map of tokens in the set, indexed by token-name"))
 
 (declare parse-multi-set-dtcg-json)
+(declare read-multi-set-dtcg)
 (declare export-dtcg-json)
 
 (deftype TokensLib [sets themes active-themes]
@@ -923,8 +925,8 @@ Will return a value that matches this schema:
      :active-themes active-themes})
 
   #?@(:clj
-      [json/JSONWriter
-       (-write [this writter options] (json/-write (export-dtcg-json this) writter options))])
+      [c.json/JSONWriter
+       (-write [this writter options] (c.json/-write (export-dtcg-json this) writter options))])
 
   ITokenSets
   ;;  Naming conventions:
@@ -1409,7 +1411,11 @@ Will return a value that matches this schema:
     ;; function that is declared but not defined; so we need to pass
     ;; an anonymous function and delegate the resolution to runtime
     {:encode/json #(export-dtcg-json %)
-     :decode/json #(parse-multi-set-dtcg-json %)}}))
+     :decode/json #(read-multi-set-dtcg %)
+     ;; FIXME: add better, more reallistic generator
+     :gen/gen (->> (sg/small-int)
+                   (sg/fmap (fn [_]
+                              (make-tokens-lib))))}}))
 
 (defn duplicate-set
   "Make a new set with a unique name, copying data from the given set in the lib."
@@ -1453,18 +1459,20 @@ Will return a value that matches this schema:
      ["value" :map]
      ["type" :string]]]))
 
+(def ^:private schema:dtcg-node
+  [:or
+   [:map
+    ["$value" :string]
+    ["$type" :string]]
+   [:map
+    ["$value" [:sequential [:map ["$type" :string]]]]
+    ["$type" :string]]
+   [:map
+    ["$value" :map]
+    ["$type" :string]]])
+
 (def ^:private dtcg-node?
-  (sm/validator
-   [:or
-    [:map
-     ["$value" :string]
-     ["$type" :string]]
-    [:map
-     ["$value" [:sequential [:map ["$type" :string]]]]
-     ["$type" :string]]
-    [:map
-     ["$value" :map]
-     ["$type" :string]]]))
+  (sm/validator schema:dtcg-node))
 
 (defn- get-json-format
   "Searches through decoded token file and returns:
@@ -1651,6 +1659,43 @@ Will return a value that matches this schema:
   (assert (= (get-json-format decoded-json-tokens) :json-format/legacy) "expected a legacy format for `decoded-json-tokens`")
   (parse-single-set-dtcg-json set-name (legacy-json->dtcg-json decoded-json-tokens)))
 
+(def ^:private schema:multi-set-dtcg
+  "Schema for penpot multi-set dtcg json decoded data/
+
+  Mainly used for validate the structure of the incoming data before
+  proceed to parse it to our internal data structures."
+  [:schema {:registry
+            {::node
+             [:or
+              [:map-of :string [:ref ::node]]
+              schema:dtcg-node]}}
+   [:map
+    ["$themes" {:optional true}
+     [:vector
+      [:map {:title "Theme"}
+       ["id" {:optional true} :string]
+       ["name" :string]
+       ["description" :string]
+       ["isSource" :boolean]
+       ["selectedTokenSets"
+        [:map-of :string [:enum "enabled" "disabled"]]]]]]
+    ["$metadata" {:optional true}
+     [:map {:title "Metadata"}
+      ["tokenSetOrder" {:optional true} [:vector :string]]
+      ["activeThemes" {:optional true} [:vector :string]]
+      ["activeSets" {:optional true} [:vector :string]]]]
+
+    [:malli.core/default
+     [:map-of :string [:ref ::node]]]]])
+
+(def ^:private check-multi-set-dtcg-data
+  (sm/check-fn schema:multi-set-dtcg))
+
+(def ^:private decode-multi-set-dtcg-data
+  (sm/decoder schema:multi-set-dtcg
+              sm/json-transformer))
+
+;; FIXME: remove `-json` suffix
 (defn parse-multi-set-dtcg-json
   "Parse a decoded json file with multi sets in DTCG format into a TokensLib."
   [decoded-json]
@@ -1741,6 +1786,23 @@ Will return a value that matches this schema:
 
     library))
 
+(defn read-multi-set-dtcg
+  "Read penpot multi-set dctg tokens. Accepts string or JSON decoded
+  data (without any case transformation). Used as schema decoder and
+  in the SDK."
+  [data]
+  (let [data (if (string? data)
+               (json/decode data :key-fn identity)
+               data)
+        data #?(:cljs (if (object? data)
+                        (json/->clj data :key-fn identity)
+                        data)
+                :clj data)
+
+        data (decode-multi-set-dtcg-data data)]
+    (-> (check-multi-set-dtcg-data data)
+        (parse-multi-set-dtcg-json))))
+
 (defn- parse-multi-set-legacy-json
   "Parse a decoded json file with multi sets in legacy format into a TokensLib."
   [decoded-json]
@@ -1753,6 +1815,7 @@ Will return a value that matches this schema:
     (parse-multi-set-dtcg-json (merge other-data
                                       dtcg-sets-data))))
 
+;; FIXME: remove `-json` suffix
 (defn parse-decoded-json
   "Guess the format and content type of the decoded json file and parse it into a TokensLib.
    The `file-name` is used to determine the set name when the json file contains a single set."
diff --git a/library/CHANGES.md b/library/CHANGES.md
index 0810204a34..97e4212855 100644
--- a/library/CHANGES.md
+++ b/library/CHANGES.md
@@ -1,5 +1,10 @@
 # CHANGELOG
 
+## 1.1.0-RC1
+
+- Add experimental addTokensLib method
+
+
 ## 1.0.11
 
 - Set correct path if it is not provided on addComponent
diff --git a/library/package.json b/library/package.json
index 6faca2cb93..8ceb1725b6 100644
--- a/library/package.json
+++ b/library/package.json
@@ -1,13 +1,13 @@
 {
   "name": "@penpot/library",
-  "version": "1.0.11",
+  "version": "1.1.0-RC1",
   "license": "MPL-2.0",
   "author": "Kaleidos INC",
   "packageManager": "yarn@4.10.3+sha512.c38cafb5c7bb273f3926d04e55e1d8c9dfa7d9c3ea1f36a4868fa028b9e5f72298f0b7f401ad5eb921749eb012eb1c3bb74bf7503df3ee43fd600d14a018266f",
   "type": "module",
   "repository": {
     "type": "git",
-    "url": "https://github.com/penpot/penpot"
+    "url": "git+https://github.com/penpot/penpot.git"
   },
   "resolutions": {
     "@zip.js/zip.js@npm:^2.7.44": "patch:@zip.js/zip.js@npm%3A2.7.60#~/.yarn/patches/@zip.js-zip.js-npm-2.7.60-b6b814410b.patch"
diff --git a/library/src/lib/builder.cljs b/library/src/lib/builder.cljs
index c7b87d32c3..316631d8d4 100644
--- a/library/src/lib/builder.cljs
+++ b/library/src/lib/builder.cljs
@@ -11,6 +11,7 @@
    [app.common.files.builder :as fb]
    [app.common.json :as json]
    [app.common.schema :as sm]
+   [app.common.types.tokens-lib :refer [read-multi-set-dtcg]]
    [app.common.uuid :as uuid]
    [app.util.object :as obj]))
 
@@ -263,6 +264,15 @@
                        :mtype (get fmedia :mtype)}]
             (json/->js (d/without-nils image))))))
 
+    :addTokensLib
+    (fn [data]
+      (try
+        (let [tlib (read-multi-set-dtcg data)]
+          (swap! state fb/add-tokens-lib tlib)
+          nil)
+        (catch :default cause
+          (handle-exception cause))))
+
     :genId
     (fn []
       (dm/str (uuid/next)))
diff --git a/library/test/_tokens-1.json b/library/test/_tokens-1.json
new file mode 100644
index 0000000000..2eb60b2f2b
--- /dev/null
+++ b/library/test/_tokens-1.json
@@ -0,0 +1,62 @@
+{
+  "a": {},
+  "b": {
+    "aaa": {
+      "$value": "red",
+      "$type": "color",
+      "$description": ""
+    },
+    "bbb": {
+      "$value": "blue",
+      "$type": "color",
+      "$description": ""
+    },
+    "ccc": {
+      "eee": {
+        "$value": "green",
+        "$type": "color",
+        "$description": ""
+      }
+    },
+    "fff": {
+      "ttt": {
+        "$value": {
+          "fontFamilies": [
+            "Aboreto"
+          ],
+          "fontSizes": "12",
+          "fontWeights": "300"
+        },
+        "$type": "typography",
+        "$description": ""
+      }
+    }
+  },
+  "b/c": {},
+  "$themes": [
+    {
+      "id": "48af6582-f247-8060-8006-ff4dd1d761a8",
+      "name": "tes1",
+      "description": "",
+      "isSource": false,
+      "selectedTokenSets": {
+        "a": "enabled",
+        "b": "enabled"
+      }
+    }
+  ],
+  "$metadata": {
+    "tokenSetOrder": [
+      "a",
+      "b",
+      "b/c"
+    ],
+    "activeThemes": [
+      "/tes1"
+    ],
+    "activeSets": [
+      "a",
+      "b"
+    ]
+  }
+}
\ No newline at end of file
diff --git a/library/test/builder.test.js b/library/test/builder.test.js
index fb99eac60b..0e1b0270ec 100644
--- a/library/test/builder.test.js
+++ b/library/test/builder.test.js
@@ -1,8 +1,15 @@
 import assert from "node:assert/strict";
 import test from "node:test";
+import * as fs from "node:fs";
+import path from "node:path";
+import { fileURLToPath } from "node:url";
 
 import * as penpot  from "#self";
 
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
+
 test("create empty context", () => {
   const context = penpot.createBuildContext();
   assert.ok(context);
@@ -118,3 +125,48 @@ test("create context with color", () => {
   assert.equal(color.opacity, params.opacity);
   assert.equal(color.name, params.name);
 });
+
+
+test("create context with tokens lib as json", () => {
+  const context = penpot.createBuildContext();
+
+  const fileId = context.addFile({name: "file 1"});
+  const pageId = context.addPage({name: "page 1"});
+
+
+  const tokensFilePath = path.join(__dirname, "_tokens-1.json");
+  const tokens = fs.readFileSync(tokensFilePath, "utf8");
+
+  context.addTokensLib(tokens);
+
+
+  const internalState = context.getInternalState();
+  const file = internalState.files[fileId];
+
+  assert.ok(file, "file should exist");
+
+  assert.ok(file.data);
+  assert.ok(file.data.tokensLib)
+});
+
+test("create context with tokens lib as obj", () => {
+  const context = penpot.createBuildContext();
+
+  const fileId = context.addFile({name: "file 1"});
+  const pageId = context.addPage({name: "page 1"});
+
+
+  const tokensFilePath = path.join(__dirname, "_tokens-1.json");
+  const tokens = fs.readFileSync(tokensFilePath, "utf8");
+
+  context.addTokensLib(JSON.parse(tokens))
+
+
+  const internalState = context.getInternalState();
+  const file = internalState.files[fileId];
+
+  assert.ok(file, "file should exist");
+
+  assert.ok(file.data);
+  assert.ok(file.data.tokensLib)
+});