diff --git a/assets/tools_schema.json b/assets/tools_schema.json
index b604cc3..c9d23fc 100644
--- a/assets/tools_schema.json
+++ b/assets/tools_schema.json
@@ -3,7 +3,7 @@
     "name": "code_run",
     "description": "Code executor. Prefer python. No concurrent calls. Put code in ```python/powershell blocks in reply body to avoid escaping. No hardcoding bulk data",
     "parameters": {"type": "object", "properties": {
-      "script": {"type": "string", "description": "[Optional] Code to execute. Prefer code blocks in reply body to avoid escaping (leave empty when using code blocks)"},
+      "script": {"type": "string", "description": "[Optional] NEVER use this param when code is in ```python/powershell blocks in reply body. Only use when no code block in reply. Mutually exclusive with reply code blocks"},
       "type": {"type": "string", "enum": ["python", "powershell"], "description": "Code type", "default": "python"},
       "timeout": {"type": "integer", "description": "Timeout in seconds", "default": 60},
       "cwd": {"type": "string", "description": "Working directory, defaults to cwd"}}}
@@ -45,7 +45,7 @@
     "name": "web_execute_js",
     "description": "Execute JS to control browser. Use precisely to reduce web_scan calls. Put code in ```javascript blocks in reply body to avoid escaping",
     "parameters": {"type": "object", "properties": {
-      "script": {"type": "string", "description": "[Optional] JS code or path. Prefer code blocks in reply body to avoid escaping (mutually exclusive with this param)"},
+      "script": {"type": "string", "description": "[Optional] JS code or file path. NEVER use this param when code is in ```javascript blocks in reply body. Only use when no code block in reply. Mutually exclusive with reply code blocks"},
       "save_to_file": {"type": "string", "description": "Save result to file, for long return values", "default": ""},
       "no_monitor": {"type": "boolean", "description": "Skip page change monitoring, saves 2-3s. Only set for pure reads, not for page actions", "default": false}}}
   }},
diff --git a/ga.py b/ga.py
index aa2be1e..a97db08 100644
--- a/ga.py
+++ b/ga.py
@@ -287,8 +287,7 @@ class GenericAgentHandler(BaseHandler):
         return matches[-1].strip() if matches else None
 
     def do_code_run(self, args, response):
-        '''执行代码片段，有长度限制，不允许代码中放大量数据，如有需要应当通过文件读取进行。
-        '''
+        '''执行代码片段，有长度限制，不允许代码中放大量数据，如有需要应当通过文件读取进行。'''
         if response.tool_calls and sum(1 for tc in response.tool_calls[:args.get('_index', 0)] if tc.function.name == 'code_run') > 0:
             return StepOutcome("[BLANK]", next_prompt="no multi code_run in one round!") 
         code_type = args.get("type", "python")
@@ -477,8 +476,7 @@ class GenericAgentHandler(BaseHandler):
         return StepOutcome(response, next_prompt=None, should_exit=True)
     
     def do_start_long_term_update(self, args, response):
-        '''Agent觉得当前任务完成后有重要信息需要记忆时调用此工具。
-        '''
+        '''Agent觉得当前任务完成后有重要信息需要记忆时调用此工具。'''
         prompt = '''### [总结提炼经验] 既然你觉得当前任务有重要信息需要记忆，请提取最近一次任务中【事实验证成功且长期有效】的环境事实、用户偏好、重要步骤，更新记忆。
 本工具是标记开启结算过程，若已在更新记忆过程或没有值得记忆的点，忽略本次调用。
 **提取行动验证成功的信息**：
diff --git a/llmcore.py b/llmcore.py
index 8c7ef3d..01da532 100644
--- a/llmcore.py
+++ b/llmcore.py
@@ -328,7 +328,7 @@ class ClaudeSession:
     def __init__(self, cfg):
         self.api_key = cfg['apikey']; self.api_base = cfg['apibase'].rstrip('/')
         self.default_model = cfg.get('model', 'claude-opus')
-        self.context_win = cfg.get('context_win', 18000)
+        self.context_win = cfg.get('context_win', 20000)
         self.raw_msgs, self.lock = [], threading.Lock()
         self.system = ""
     def _trim_messages(self, raw_msgs):
@@ -375,7 +375,7 @@ class LLMSession:
     def __init__(self, cfg):
         self.api_key = cfg['apikey']; self.api_base = cfg['apibase'].rstrip('/')
         self.default_model = cfg['model']
-        self.context_win = cfg.get('context_win', 18000)
+        self.context_win = cfg.get('context_win', 20000)
         self.raw_msgs, self.messages = [], []
         proxy = cfg.get('proxy')
         self.proxies = {"http": proxy, "https": proxy} if proxy else None