diff --git a/forge/autogpt/sdk/schema.py b/forge/autogpt/sdk/schema.py
index d77918343..677a7fddd 100644
--- a/forge/autogpt/sdk/schema.py
+++ b/forge/autogpt/sdk/schema.py
@@ -116,7 +116,7 @@ class StepRequestBody(BaseModel):
     name: Optional[str] = Field(
         None, description="The name of the task step.", example="Write to file"
     )
-    input: str = Field(
+    input: Optional[str] = Field(
         None,
         min_length=1,
         description="Input prompt for the step.",