diff --git a/app/api/v1/chat.py b/app/api/v1/chat.py
index 7069670..6aa5fef 100644
--- a/app/api/v1/chat.py
+++ b/app/api/v1/chat.py
@@ -16,8 +16,8 @@ from app.core.exceptions import ValidationException
 router = APIRouter(tags=["Chat"])
 
 
-VALID_ROLES = ["developer", "system", "user", "assistant", "tool", "function"]
-# 角色别名映射 (OpenAI 兼容)
+VALID_ROLES = ["developer", "system", "user", "assistant", "tool"]
+# 角色别名映射 (OpenAI 兼容: function -> tool)
 ROLE_ALIASES = {"function": "tool"}
 USER_CONTENT_TYPES = ["text", "image_url", "input_audio", "file"]
 
@@ -123,8 +123,14 @@ class ChatCompletionRequest(BaseModel):
                 return True
             if v.lower() in ("false", "0", "no"):
                 return False
-        # 其他情况尝试转换
-        return bool(v)
+            # 未识别的字符串值抛出错误
+            raise ValueError(
+                f"Invalid stream value '{v}'. Must be a boolean or one of: true, false, 1, 0, yes, no"
+            )
+        # 非布尔非字符串类型抛出错误
+        raise ValueError(
+            f"Invalid stream value type '{type(v).__name__}'. Must be a boolean or string."
+        )
 
     model_config = {
         "extra": "ignore"
diff --git a/app/services/grok/processor.py b/app/services/grok/processor.py
index 4b3d42f..5493ea1 100644
--- a/app/services/grok/processor.py
+++ b/app/services/grok/processor.py
@@ -179,14 +179,19 @@ class StreamProcessor(BaseProcessor):
                 self._tag_buffer += char
                 # 检查是否到达结束标签
                 if char == '>':
-                    # 检查是否是自闭合标签或结束标签
-                    if '/>' in self._tag_buffer or '</grok:render>' in self._tag_buffer:
+                    # 检查是否是自闭合标签
+                    if '/>' in self._tag_buffer:
                         self._in_filter_tag = False
                         self._tag_buffer = ""
-                    # 检查是否是开始标签结束（非自闭合）
-                    elif self._tag_buffer.startswith('<grok:render') and '>' in self._tag_buffer:
+                    else:
+                        # 检查是否是结束标签 </{tag}>
+                        for tag in self.filter_tags:
+                            if f'</{tag}>' in self._tag_buffer:
+                                self._in_filter_tag = False
+                                self._tag_buffer = ""
+                                break
+                        # 如果不是结束标签，检查是否是开始标签结束（非自闭合）
                         # 继续等待结束标签
-                        pass
                 i += 1
                 continue
 
diff --git a/app/services/grok/retry.py b/app/services/grok/retry.py
index c828e7c..c9d6862 100644
--- a/app/services/grok/retry.py
+++ b/app/services/grok/retry.py
@@ -188,7 +188,10 @@ async def retry_on_status(
     if extract_status is None:
         def extract_status(e: Exception) -> Optional[int]:
             if isinstance(e, UpstreamException):
-                return e.details.get("status") if e.details else None
+                # 优先从 details 获取，回退到 status_code 属性
+                if e.details and "status" in e.details:
+                    return e.details["status"]
+                return getattr(e, "status_code", None)
             return None
 
     while ctx.attempt <= ctx.max_retry: