Update tools/FinalAnswerTool.py

tools/FinalAnswerTool.py

@@ -11,24 +11,63 @@ print(settings.llm_model_id)
 class FinalAnswerTool(Tool):
     name = "final_answer"
     description = """
-        Takes the agent's computed result and formats the final answer.
-        
-        If the question asks for time rounded to the nearest *thousand hours*, 
-        you MUST:
-        
-        1. First compute total time in hours.
-        2. THEN divide by FINAL ANSWER BY 1000 to convert to 'thousands of hours'.
-        3. Round that result to the nearest integer.
-        4. Output ONLY that integer (e.g., 17), 
+                    This tool receives the agent’s computed result and MUST always be called
+    to produce the final answer output — even if the agent is at max steps or
+    the plan is incomplete.
+    
+    The Final Answer Tool is the ONLY place where the final answer may be
+    emitted. The agent must not output answers directly.
+    
+    GENERAL RULES
+    -------------
+    - ALWAYS call this tool before finishing.
+    - Output ONLY the final answer.
+    - NO explanations.
+    - NO reasoning.
+    - NO markdown.
+    - NO bold.
+    - NO asterisks (** **).
+    - NO labels (“Answer:”, “Final answer:”).
+    - NO surrounding text.
+    - Output must be plain ASCII text with no special symbols.
+    
+    ROUNDING RULES
+    --------------
+    If the question requests:
+    - A simple numeric answer → output that number (e.g., `3`)
+    - Rounding → apply the rounding, then output ONLY the rounded value
+    - “Thousands of hours” → follow this exact sequence:
+    
+       1. Compute total time in hours.
+       2. Divide by 1000 to convert to “thousands of hours”.
+       3. Round to the nearest integer.
+       4. Output ONLY that integer (example: `17`).
+    
+    FORMAT CLEANING
+    ---------------
+    Before returning the answer:
+    - Remove all markdown (e.g., ** **)
+    - Remove LaTeX symbols ($, \, { })
+    - If `boxed{...}` appears → extract the content inside
+    - Keep only digits, letters, decimal points, hyphens, slashes,
+      commas, and spaces
+    - Collapse multiple spaces into a single space
+    
+    MANDATORY INVOCATION
+    --------------------
+    The agent MUST call this tool to produce the final answer output,
+    regardless of:
+    - how many steps are taken,
+    - whether max_steps is reached,
+    - whether computation is partial or complete.
+    
+    FAILSAFE
+    --------
+    If the provided answer is empty, malformed, or cannot be cleaned,
+    output exactly:
+    "I am unable to answer"
+    and nothing else.
 
-        Always output a clean string with ONLY the final answer.
-        STRICT RULES:
-        - Do NOT use Markdown formatting.
-        - Do NOT use bold formatting.
-        - Do NOT surround the answer with **asterisks**.
-        - Do NOT add explanations, units, or extra words.
-        - If the answer is a number, output ONLY the number (e.g., 17000).
-        - Output must be plain ASCII text, no special symbols.
         """
     inputs = {
         "answer": {"type": "string", "description": "The final, correctly formatted answer string."}