diff --git a/autogpt_platform/backend/backend/blocks/agent.py b/autogpt_platform/backend/backend/blocks/agent.py
index 49bb9cb64e..30e8743a6d 100644
--- a/autogpt_platform/backend/backend/blocks/agent.py
+++ b/autogpt_platform/backend/backend/blocks/agent.py
@@ -58,7 +58,7 @@ class AgentExecutorBlock(Block):
             return set(required_fields) - set(data)
 
         @classmethod
-        def validate_data(cls, data: BlockInput) -> str | None:
+        def get_mismatch_error(cls, data: BlockInput) -> str | None:
             return json.validate_with_jsonschema(cls.get_input_schema(data), data)
 
     class Output(BlockSchema):
diff --git a/autogpt_platform/backend/backend/blocks/smart_decision_maker.py b/autogpt_platform/backend/backend/blocks/smart_decision_maker.py
index 160092de75..f8f1f1f003 100644
--- a/autogpt_platform/backend/backend/blocks/smart_decision_maker.py
+++ b/autogpt_platform/backend/backend/blocks/smart_decision_maker.py
@@ -396,4 +396,3 @@ class SmartDecisionMakerBlock(Block):
 
         response.prompt.append(response.raw_response)
         yield "conversations", response.prompt
-        yield "length", len(response.prompt)
diff --git a/autogpt_platform/backend/backend/data/block.py b/autogpt_platform/backend/backend/data/block.py
index fbb1b0ed9e..2509dcd664 100644
--- a/autogpt_platform/backend/backend/data/block.py
+++ b/autogpt_platform/backend/backend/data/block.py
@@ -114,6 +114,10 @@ class BlockSchema(BaseModel):
     def validate_data(cls, data: BlockInput) -> str | None:
         return json.validate_with_jsonschema(schema=cls.jsonschema(), data=data)
 
+    @classmethod
+    def get_mismatch_error(cls, data: BlockInput) -> str | None:
+        return cls.validate_data(data)
+
     @classmethod
     def validate_field(cls, field_name: str, data: BlockInput) -> str | None:
         """
diff --git a/autogpt_platform/backend/backend/executor/manager.py b/autogpt_platform/backend/backend/executor/manager.py
index b054437bf0..4b92903a9b 100644
--- a/autogpt_platform/backend/backend/executor/manager.py
+++ b/autogpt_platform/backend/backend/executor/manager.py
@@ -435,7 +435,7 @@ def validate_exec(
         return None, f"{error_prefix} missing input {missing_input}"
 
     # Last validation: Validate the input values against the schema.
-    if error := schema.validate_data(data):
+    if error := schema.get_mismatch_error(data):
         error_message = f"{error_prefix} {error}"
         logger.error(error_message)
         return None, error_message