Update app.py

app.py

@@ -32,6 +32,7 @@ class TrickQuestionDetector(Tool):
         self.name = "trick_detector"
         self.description = "Analyze if a question is a trick question and provide guidance"
         self.inputs = {"question": {"type": "string", "description": "The question to analyze"}}
+        self.output_type = "string"
     
     def detect_trick(self, question: str) -> str:
         """Detect common trick question patterns"""
@@ -67,6 +68,7 @@ class StepByStepReasoner(Tool):
         self.name = "step_reasoner"
         self.description = "Break down complex questions into logical steps"
         self.inputs = {"question": {"type": "string", "description": "The question to break down"}}
+        self.output_type = "string"
     
     def reason_steps(self, question: str) -> str:
         """Break question into reasoning steps"""
@@ -101,6 +103,7 @@ class FactChecker(Tool):
         self.name = "fact_checker"
         self.description = "Check factual accuracy and provide confidence assessment"
         self.inputs = {"claim": {"type": "string", "description": "The claim to fact-check"}}
+        self.output_type = "string"
     
     def check_facts(self, claim: str) -> str:
         """Assess factual accuracy of a claim"""
@@ -132,6 +135,7 @@ class AnswerValidator(Tool):
         self.name = "answer_validator"
         self.description = "Validate if an answer is reasonable for the given question"
         self.inputs = {"question": {"type": "string", "description": "The question"}, "answer": {"type": "string", "description": "The answer to validate"}}
+        self.output_type = "string"
     
     def validate_answer(self, question: str, answer: str) -> str:
         """Check if answer is reasonable for the question"""