diff --git a/fe-app-podkop/src/validators/index.ts b/fe-app-podkop/src/validators/index.ts
index bedc361..8c6c5e1 100644
--- a/fe-app-podkop/src/validators/index.ts
+++ b/fe-app-podkop/src/validators/index.ts
@@ -7,3 +7,4 @@ export * from './validateSubnet';
 export * from './bulkValidate';
 export * from './validateShadowsocksUrl';
 export * from './validateVlessUrl';
+export * from './validateOutboundJson';
diff --git a/fe-app-podkop/src/validators/validateDns.ts b/fe-app-podkop/src/validators/validateDns.ts
index ea1fec7..f779d22 100644
--- a/fe-app-podkop/src/validators/validateDns.ts
+++ b/fe-app-podkop/src/validators/validateDns.ts
@@ -1,6 +1,6 @@
 import { validateDomain } from './validateDomain';
 import { validateIPV4 } from './validateIp';
-import { ValidationResult } from './types.js';
+import { ValidationResult } from './types';
 
 export function validateDNS(value: string): ValidationResult {
   if (!value) {
diff --git a/fe-app-podkop/src/validators/validateDomain.ts b/fe-app-podkop/src/validators/validateDomain.ts
index ae90296..343fd86 100644
--- a/fe-app-podkop/src/validators/validateDomain.ts
+++ b/fe-app-podkop/src/validators/validateDomain.ts
@@ -1,4 +1,4 @@
-import { ValidationResult } from './types.js';
+import { ValidationResult } from './types';
 
 export function validateDomain(domain: string): ValidationResult {
   const domainRegex =
diff --git a/fe-app-podkop/src/validators/validateIp.ts b/fe-app-podkop/src/validators/validateIp.ts
index 4d1967b..88ab1f0 100644
--- a/fe-app-podkop/src/validators/validateIp.ts
+++ b/fe-app-podkop/src/validators/validateIp.ts
@@ -1,4 +1,4 @@
-import { ValidationResult } from './types.js';
+import { ValidationResult } from './types';
 
 export function validateIPV4(ip: string): ValidationResult {
   const ipRegex =
diff --git a/fe-app-podkop/src/validators/validateOutboundJson.ts b/fe-app-podkop/src/validators/validateOutboundJson.ts
new file mode 100644
index 0000000..c768543
--- /dev/null
+++ b/fe-app-podkop/src/validators/validateOutboundJson.ts
@@ -0,0 +1,20 @@
+import { ValidationResult } from './types';
+
+// TODO refactor current validation and add tests
+export function validateOutboundJson(value: string): ValidationResult {
+  try {
+    const parsed = JSON.parse(value);
+
+    if (!parsed.type || !parsed.server || !parsed.server_port) {
+      return {
+        valid: false,
+        message:
+          'Outbound JSON must contain at least "type", "server" and "server_port" fields',
+      };
+    }
+
+    return { valid: true, message: 'Valid' };
+  } catch {
+    return { valid: false, message: 'Invalid JSON format' };
+  }
+}
diff --git a/fe-app-podkop/src/validators/validateShadowsocksUrl.ts b/fe-app-podkop/src/validators/validateShadowsocksUrl.ts
index 8c2adb1..b52a624 100644
--- a/fe-app-podkop/src/validators/validateShadowsocksUrl.ts
+++ b/fe-app-podkop/src/validators/validateShadowsocksUrl.ts
@@ -1,4 +1,4 @@
-import { ValidationResult } from './types.js';
+import { ValidationResult } from './types';
 
 // TODO refactor current validation and add tests
 export function validateShadowsocksUrl(url: string): ValidationResult {
diff --git a/fe-app-podkop/src/validators/validateSubnet.ts b/fe-app-podkop/src/validators/validateSubnet.ts
index f0022c0..6f3e2b9 100644
--- a/fe-app-podkop/src/validators/validateSubnet.ts
+++ b/fe-app-podkop/src/validators/validateSubnet.ts
@@ -1,4 +1,4 @@
-import { ValidationResult } from './types.js';
+import { ValidationResult } from './types';
 import { validateIPV4 } from './validateIp';
 
 export function validateSubnet(value: string): ValidationResult {
diff --git a/fe-app-podkop/src/validators/validateUrl.ts b/fe-app-podkop/src/validators/validateUrl.ts
index 865af9d..57e883a 100644
--- a/fe-app-podkop/src/validators/validateUrl.ts
+++ b/fe-app-podkop/src/validators/validateUrl.ts
@@ -1,4 +1,4 @@
-import { ValidationResult } from './types.js';
+import { ValidationResult } from './types';
 
 export function validateUrl(
   url: string,
diff --git a/luci-app-podkop/htdocs/luci-static/resources/view/podkop/configSection.js b/luci-app-podkop/htdocs/luci-static/resources/view/podkop/configSection.js
index 7a88eed..4c8a2ae 100644
--- a/luci-app-podkop/htdocs/luci-static/resources/view/podkop/configSection.js
+++ b/luci-app-podkop/htdocs/luci-static/resources/view/podkop/configSection.js
@@ -124,16 +124,18 @@ function createConfigSection(section, map, network) {
     o.rows = 10;
     o.ucisection = s.section;
     o.validate = function (section_id, value) {
-        if (!value || value.length === 0) return true;
-        try {
-            const parsed = JSON.parse(value);
-            if (!parsed.type || !parsed.server || !parsed.server_port) {
-                return _('JSON must contain at least type, server and server_port fields');
-            }
-            return true;
-        } catch (e) {
-            return _('Invalid JSON format');
+        // Optional
+        if (!value || value.length === 0) {
+            return true
         }
+
+        const validation = main.validateOutboundJson(value);
+
+        if (validation.valid) {
+            return true;
+        }
+
+        return _(validation.message)
     };
 
     o = s.taboption('basic', form.DynamicList, 'urltest_proxy_links', _('URLTest Proxy Links'));
diff --git a/luci-app-podkop/htdocs/luci-static/resources/view/podkop/main.js b/luci-app-podkop/htdocs/luci-static/resources/view/podkop/main.js
index 1752146..f97049d 100644
--- a/luci-app-podkop/htdocs/luci-static/resources/view/podkop/main.js
+++ b/luci-app-podkop/htdocs/luci-static/resources/view/podkop/main.js
@@ -261,6 +261,22 @@ function validateVlessUrl(url) {
   return { valid: true, message: "Valid" };
 }
 
+// src/validators/validateOutboundJson.ts
+function validateOutboundJson(value) {
+  try {
+    const parsed = JSON.parse(value);
+    if (!parsed.type || !parsed.server || !parsed.server_port) {
+      return {
+        valid: false,
+        message: 'Outbound JSON must contain at least "type", "server" and "server_port" fields'
+      };
+    }
+    return { valid: true, message: "Valid" };
+  } catch {
+    return { valid: false, message: "Invalid JSON format" };
+  }
+}
+
 // src/helpers/getBaseUrl.ts
 function getBaseUrl() {
   const { protocol, hostname } = window.location;
@@ -405,6 +421,7 @@ return baseclass.extend({
   validateDNS,
   validateDomain,
   validateIPV4,
+  validateOutboundJson,
   validatePath,
   validateShadowsocksUrl,
   validateSubnet,