diff --git a/services/static-webserver/client/source/class/osparc/store/Products.js b/services/static-webserver/client/source/class/osparc/store/Products.js
index 2a359d27fb6b..b0cef978485e 100644
--- a/services/static-webserver/client/source/class/osparc/store/Products.js
+++ b/services/static-webserver/client/source/class/osparc/store/Products.js
@@ -17,6 +17,10 @@
 
 /**
  * @asset(osparc/ui_config.json")
+ * @asset(schemas/product-ui.json)
+ * @asset(object-path/object-path-0-11-4.min.js)
+ * @asset(ajv/ajv-6-11-0.min.js)
+ * @ignore(Ajv)
  */
 
 qx.Class.define("osparc.store.Products", {
@@ -27,31 +31,58 @@ qx.Class.define("osparc.store.Products", {
     __uiConfig: null,
 
     fetchUiConfig: function() {
-      if (osparc.auth.Data.getInstance().isGuest()) {
-        return new Promise(resolve => {
+      return new Promise(resolve => {
+        if (osparc.auth.Data.getInstance().isGuest()) {
           this.__uiConfig = {};
           resolve(this.__uiConfig);
-        });
-      }
+        }
 
-      return Promise.all([
-        osparc.data.Resources.fetch("productMetadata", "getUiConfig"),
-        osparc.utils.Utils.fetchJSON("/resource/osparc/ui_config.json"),
-      ])
-        .then(values => {
-          let uiConfig = {};
-          if (values[0] && values[0]["ui"] && Object.keys(values[0]["ui"]).length) {
-            uiConfig = values[0]["ui"];
-          } else {
-            const product = osparc.product.Utils.getProductName();
-            if (values[1] && product in values[1]) {
-              uiConfig = values[1][product];
+        Promise.all([
+          osparc.data.Resources.fetch("productMetadata", "getUiConfig"),
+          osparc.utils.Utils.fetchJSON("/resource/osparc/ui_config.json"),
+          osparc.utils.Utils.fetchJSON("/resource/schemas/product-ui.json"),
+        ])
+          .then(values => {
+            let uiConfig = {};
+            const beUiConfig = values[0];
+            const feUiConfig = values[1];
+            const schema = values[2];
+            if (beUiConfig && beUiConfig["ui"] && Object.keys(beUiConfig["ui"]).length) {
+              uiConfig = beUiConfig["ui"];
+            } else {
+              const product = osparc.product.Utils.getProductName();
+              if (feUiConfig && product in feUiConfig) {
+                uiConfig = feUiConfig[product];
+              }
             }
-          }
-          this.__uiConfig = uiConfig;
-          return this.__uiConfig;
-        })
-        .catch(console.error);
+            const ajvLoader = new qx.util.DynamicScriptLoader([
+              "/resource/ajv/ajv-6-11-0.min.js",
+              "/resource/object-path/object-path-0-11-4.min.js"
+            ]);
+            ajvLoader.addListener("ready", () => {
+              const ajv = new Ajv({
+                allErrors: true,
+                strictDefaults: true,
+                useDefaults: true,
+                strictTypes: true,
+              });
+              const validate = ajv.compile(schema);
+              const valid = validate(uiConfig);
+              if (valid) {
+                this.__uiConfig = uiConfig;
+                resolve(this.__uiConfig);
+              } else {
+                osparc.FlashMessenger.getInstance().logAs("Wrong product.ui config", "ERROR");
+                validate.errors.forEach(err => {
+                  console.error(`Error at ${err.dataPath}: ${err.message}`);
+                });
+              }
+            });
+            ajvLoader.addListener("failed", console.error, this);
+            ajvLoader.start();
+          })
+          .catch(console.error);
+      });
     },
 
     getPlusButtonUiConfig: function() {
diff --git a/services/static-webserver/client/source/resource/schemas/product-ui.json b/services/static-webserver/client/source/resource/schemas/product-ui.json
new file mode 100644
index 000000000000..5b5c09f986b8
--- /dev/null
+++ b/services/static-webserver/client/source/resource/schemas/product-ui.json
@@ -0,0 +1,89 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "type": "object",
+  "properties": {
+    "plusButton": {
+      "$ref": "#/definitions/buttonConfig"
+    },
+    "newStudies": {
+      "$ref": "#/definitions/buttonConfig"
+    }
+  },
+  "additionalProperties": false,
+  "definitions": {
+    "buttonConfig": {
+      "type": "object",
+      "properties": {
+        "categories": {
+          "type": "array",
+          "items": {
+            "type": "object",
+            "properties": {
+              "id": { "type": "string" },
+              "title": { "type": "string" },
+              "description": { "type": "string" }
+            },
+            "required": ["id", "title"]
+          }
+        },
+        "resources": {
+          "type": "array",
+          "items": {
+            "oneOf": [{
+              "type": "object",
+              "properties": {
+                "resourceType": { "enum": ["study"] },
+                "title": { "type": "string" },
+                "icon": { "type": "string" },
+                "newStudyLabel": { "type": "string" },
+                "idToWidget": { "type": "string" }
+              },
+              "required": ["resourceType", "title"]
+            }, {
+              "type": "object",
+              "properties": {
+                "resourceType": { "enum": ["template"] },
+                "expectedTemplateLabel": { "type": "string" },
+                "title": { "type": "string" },
+                "icon": { "type": "string" },
+                "newStudyLabel": { "type": "string" },
+                "category": { "type": "string" },
+                "idToWidget": { "type": "string" }
+              },
+              "required": ["resourceType", "expectedTemplateLabel", "title"]
+            }, {
+              "type": "object",
+              "properties": {
+                "resourceType": { "enum": ["service"] },
+                "expectedKey": { "type": "string" },
+                "title": { "type": "string" },
+                "icon": { "type": "string" },
+                "newStudyLabel": { "type": "string" },
+                "category": { "type": "string" },
+                "idToWidget": { "type": "string" }
+              },
+              "required": ["resourceType", "expectedKey", "title"]
+            }, {
+              "type": "object",
+              "properties": {
+                "showDisabled": {
+                  "type": "boolean",
+                  "enum": [true]
+                },
+                "title": { "type": "string" },
+                "icon": { "type": "string" },
+                "reason": { "type": "string" },
+                "newStudyLabel": { "type": "string" },
+                "category": { "type": "string" },
+                "idToWidget": { "type": "string" }
+              },
+              "required": ["showDisabled", "title"]
+            }]
+          },
+          "additionalProperties": false
+        }
+      },
+      "additionalProperties": false
+    }
+  }
+}