diff --git a/api/services/tools/builtin_tools_manage_service.py b/api/services/tools/builtin_tools_manage_service.py
index 6b0b6b0f0e..cab4a5c6ab 100644
--- a/api/services/tools/builtin_tools_manage_service.py
+++ b/api/services/tools/builtin_tools_manage_service.py
@@ -349,14 +349,10 @@ class BuiltinToolManageService:
             provider_controller = ToolManager.get_builtin_provider(default_provider.provider, tenant_id)
 
             credentials: list[ToolProviderCredentialApiEntity] = []
-            encrypters = {}
             for provider in providers:
-                credential_type = provider.credential_type
-                if credential_type not in encrypters:
-                    encrypters[credential_type] = BuiltinToolManageService.create_tool_encrypter(
-                        tenant_id, provider, provider.provider, provider_controller
-                    )[0]
-                encrypter = encrypters[credential_type]
+                encrypter, _ = BuiltinToolManageService.create_tool_encrypter(
+                    tenant_id, provider, provider.provider, provider_controller
+                )
                 decrypt_credential = encrypter.mask_tool_credentials(encrypter.decrypt(provider.credentials))
                 credential_entity = ToolTransformService.convert_builtin_provider_to_credential_entity(
                     provider=provider,