diff --git a/src/xray_manager/core/outbound.py b/src/xray_manager/core/outbound.py
new file mode 100644
index 0000000..7007541
--- /dev/null
+++ b/src/xray_manager/core/outbound.py
@@ -0,0 +1,33 @@
+from __future__ import annotations
+
+import secrets
+import uuid
+from abc import ABC, abstractmethod
+from collections import defaultdict
+from dataclasses import dataclass, make_dataclass
+from typing import TYPE_CHECKING, TypeVar
+from urllib.parse import parse_qs, quote, unquote, urlencode, urlparse
+
+from .outbound_fields import OUTBOUND_FIELDS
+
+
+class Outbound(ABC):
+    pass
+
+
+_ShadowsocksFields = make_dataclass(
+    "_ShadowsocksFields", fields=OUTBOUND_FIELDS["shadowsocks"]
+)
+
+
+class ShadowsocksOutbound(_ShadowsocksFields, Outbound):
+    pass
+
+
+_VlessFields = make_dataclass(
+    "_VlessFieldss", fields=OUTBOUND_FIELDS["vless"]
+)
+
+
+class VlessOutbound(_VlessFields, Outbound):
+    pass
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diff --git a/src/xray_manager/core/outbound_fields.py b/src/xray_manager/core/outbound_fields.py
new file mode 100644
index 0000000..d581614
--- /dev/null
+++ b/src/xray_manager/core/outbound_fields.py
@@ -0,0 +1,29 @@
+from dataclasses import field
+
+
+_BASE_FIELDS = [
+    ("host", str),
+    ("port", str),
+    ("target", str),
+]
+
+
+OUTBOUND_FIELDS = {
+    "shadowsocks": _BASE_FIELDS + [
+        ("method", str),
+        ("server_password", str),
+        ("client_password", str),
+    ],
+    "vless": _BASE_FIELDS + [
+        ("id", str),
+        ("security", str),
+        ("encryption", str),
+        ("public_key", str),
+        ("network_type", str),
+        ("sni", str),
+        ("short_id", str),
+        ("flow", str, field(default="xtls-rprx-vision")),
+        ("header_type", str, field(default="none")),
+        ("finger_print", str, field(default="chrome"))
+    ],
+}
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