diff --git a/internal/web/service/node_contract.go b/internal/web/service/node_contract.go
index 5526c0a..e1ca7d6 100644
--- a/internal/web/service/node_contract.go
+++ b/internal/web/service/node_contract.go
@@ -118,8 +118,8 @@ type NodeMutationRequest struct {
 	Name                string   `json:"name" form:"name" validate:"required"`
 	Remark              string   `json:"remark" form:"remark"`
 	Scheme              string   `json:"scheme" form:"scheme" validate:"omitempty,oneof=http https"`
-	Address             string   `json:"address" form:"address" validate:"required"`
-	Port                int      `json:"port" form:"port" validate:"gte=1,lte=65535"`
+	Address             string   `json:"address" form:"address"`
+	Port                int      `json:"port" form:"port" validate:"gte=0,lte=65535"`
 	BasePath            string   `json:"basePath" form:"basePath"`
 	ApiToken            *string  `json:"apiToken,omitempty" form:"apiToken"`
 	ClearApiToken       bool     `json:"clearApiToken,omitempty" form:"clearApiToken"`
@@ -140,6 +140,16 @@ func (r *NodeMutationRequest) validateCredentials(create bool) error {
 	if r == nil {
 		return common.NewError("node request is required")
 	}
+	// Agent nodes dial out to the master; address/port are not needed.
+	// Traditional nodes still require them.
+	if r.NodeType != "agent" {
+		if strings.TrimSpace(r.Address) == "" {
+			return common.NewError("address is required")
+		}
+		if r.Port < 1 || r.Port > 65535 {
+			return common.NewError("port must be between 1 and 65535")
+		}
+	}
 	if r.ApiToken != nil && r.ClearApiToken {
 		return common.NewError("apiToken and clearApiToken are mutually exclusive")
 	}
diff --git a/internal/web/translation/en-US.json b/internal/web/translation/en-US.json
index 160efb5..e8e3ab5 100644
--- a/internal/web/translation/en-US.json
+++ b/internal/web/translation/en-US.json
@@ -1181,9 +1181,9 @@
       "pinFetched": "Fetched the node's current certificate",
       "pinFetchFailed": "Could not fetch the certificate",
       "nodeType": "Node Type",
-      "nodeTypeTraditional": "Traditional Panel",
-      "nodeTypeAgent": "Agent",
-      "agentHint": "Agent nodes don't need a panel address. An agent token will be generated on creation for configuring the agent on the node machine.",
+      "nodeTypeTraditional": "Traditional Panel Node",
+      "nodeTypeAgent": "Agent Lightweight Node",
+      "agentHint": "Agent nodes connect out to the master; no address, port or API token needed. An install command is generated on creation.",
       "agentTokenTitle": "Agent Node Setup",
       "agentTokenCreated": "Node {{name}} created successfully",
       "agentTokenHint": "Copy the command below and run it on the node machine. This token is shown only once!",
diff --git a/internal/web/translation/zh-CN.json b/internal/web/translation/zh-CN.json
index 6e08e80..2ec503d 100644
--- a/internal/web/translation/zh-CN.json
+++ b/internal/web/translation/zh-CN.json
@@ -1063,9 +1063,9 @@
       "pinFetched": "已获取节点当前证书",
       "pinFetchFailed": "无法获取证书",
       "nodeType": "节点类型",
-      "nodeTypeTraditional": "传统面板",
-      "nodeTypeAgent": "Agent",
-      "agentHint": "Agent 节点无需面板地址，创建后会自动生成 agent token，用于在节点机上配置 agent。",
+      "nodeTypeTraditional": "传统面板节点",
+      "nodeTypeAgent": "Agent 轻量节点",
+      "agentHint": "Agent 节点由节点机主动连接主控，无需填写地址、端口和 API 令牌。创建后会生成安装命令。",
       "agentTokenTitle": "Agent 节点安装",
       "agentTokenCreated": "节点 {{name}} 创建成功",
       "agentTokenHint": "复制下面的命令，在节点机上运行即可完成安装。此 token 只显示一次！",