优化提示词及没有工具调用闭合标签

app/services.py

@@ -117,17 +117,33 @@ def inject_tools_into_prompt(messages: List[ChatMessage], tools: List[Tool]) ->
 
     tool_prompt = f"""
 You are a helpful assistant with access to a set of tools.
-You can call them by emitting a JSON object inside tool call tags.
 
-IMPORTANT: Use the following format for tool calls:
-Format: {TOOL_CALL_START_TAG}{{"name": "tool_name", "arguments": {{...}}}}{TOOL_CALL_END_TAG}
+## TOOL CALL FORMAT (CRITICAL)
 
-Example: {full_example}
+When you need to use a tool, you MUST follow this EXACT format:
 
-Here are the available tools:
+{TOOL_CALL_START_TAG}{{"name": "tool_name", "arguments": {{...}}}}{TOOL_CALL_END_TAG}
+
+### IMPORTANT RULES:
+1. ALWAYS include BOTH the opening tag ({TOOL_CALL_START_TAG}) AND closing tag ({TOOL_CALL_END_TAG})
+2. The JSON must be valid and properly formatted
+3. Keep arguments concise to avoid truncation
+4. Do not include any text between the tags except the JSON
+
+### Examples:
+Simple call:
+{full_example}
+
+Multiple arguments:
+{TOOL_CALL_START_TAG}{{"name": "search", "arguments": {{"query": "example", "limit": 5}}}}{TOOL_CALL_END_TAG}
+
+## AVAILABLE TOOLS:
 {tool_defs}
 
-Only use the tools if strictly necessary.
+## REMEMBER:
+- If you decide to call a tool, output ONLY the tool call tags (you may add brief text before or after)
+- ALWAYS close your tags properly with {TOOL_CALL_END_TAG}
+- Keep your arguments concise and essential
 """
     # Prepend the system prompt with tool definitions
     return [ChatMessage(role="system", content=tool_prompt)] + messages