diff --git a/tools/contentvariant.py b/tools/contentvariant.py
index d930b52..af26b18 100644
--- a/tools/contentvariant.py
+++ b/tools/contentvariant.py
@@ -108,15 +108,8 @@ class ContentVariantTool(SimpleTool):
             "testing angles, and predicted audience responses."
         )
 
-        # Build prompt text without mutating request object
-        prompt_text = "\n".join(prompt_parts)
-
-        # Create a new request-like object with the prompt for chat-style preparation
-        # This avoids mutating the original request object
-        from copy import copy
-        request_copy = copy(request)
-        request_copy.prompt = prompt_text
-        return self.prepare_chat_style_prompt(request_copy)
+        # Return the complete prompt
+        return "\n".join(prompt_parts)
 
     def get_input_schema(self) -> dict:
         """Return the JSON schema for this tool's input"""
diff --git a/tools/factcheck.py b/tools/factcheck.py
index 8327e4d..9215acf 100644
--- a/tools/factcheck.py
+++ b/tools/factcheck.py
@@ -119,15 +119,8 @@ class FactCheckTool(SimpleTool):
             "evidence summary, confidence level, sources, and recommendations if needed."
         )
 
-        # Build prompt text without mutating request object
-        prompt_text = "\n".join(prompt_parts)
-
-        # Create a copy for chat-style preparation
-        from copy import copy
-
-        request_copy = copy(request)
-        request_copy.prompt = prompt_text
-        return self.prepare_chat_style_prompt(request_copy)
+        # Return the complete prompt
+        return "\n".join(prompt_parts)
 
     def get_input_schema(self) -> dict:
         """Return the JSON schema for this tool's input"""
diff --git a/tools/platformadapt.py b/tools/platformadapt.py
index 8bdfb40..2938af5 100644
--- a/tools/platformadapt.py
+++ b/tools/platformadapt.py
@@ -120,15 +120,8 @@ class PlatformAdaptTool(SimpleTool):
             "adaptation rationale, and platform-specific optimizations applied."
         )
 
-        # Build prompt text without mutating request object
-        prompt_text = "\n".join(prompt_parts)
-
-        # Create a copy for chat-style preparation
-        from copy import copy
-
-        request_copy = copy(request)
-        request_copy.prompt = prompt_text
-        return self.prepare_chat_style_prompt(request_copy)
+        # Return the complete prompt
+        return "\n".join(prompt_parts)
 
     def get_input_schema(self) -> dict:
         """Return the JSON schema for this tool's input"""
diff --git a/tools/subjectlines.py b/tools/subjectlines.py
index 2a8a9de..7e6bcde 100644
--- a/tools/subjectlines.py
+++ b/tools/subjectlines.py
@@ -122,15 +122,8 @@ class SubjectLinesTool(SimpleTool):
             "\n\nGroup by psychological angle, include character counts, A/B testing rationale, and make each line genuinely different."
         )
 
-        # Build prompt text without mutating request object
-        prompt_text = "\n".join(prompt_parts)
-
-        # Create a copy for chat-style preparation
-        from copy import copy
-
-        request_copy = copy(request)
-        request_copy.prompt = prompt_text
-        return self.prepare_chat_style_prompt(request_copy)
+        # Return the complete prompt
+        return "\n".join(prompt_parts)
 
     def get_input_schema(self) -> dict:
         """Return the JSON schema for this tool's input"""