diff --git a/docs/_static/llama-stack-spec.html b/docs/_static/llama-stack-spec.html
index 8d0e8652e..ae599563d 100644
--- a/docs/_static/llama-stack-spec.html
+++ b/docs/_static/llama-stack-spec.html
@@ -2440,8 +2440,7 @@
                 "required": [
                     "role",
                     "content",
-                    "stop_reason",
-                    "tool_calls"
+                    "stop_reason"
                 ],
                 "description": "A message containing the model's (assistant) response in a chat conversation."
             },
@@ -3632,7 +3631,6 @@
                 },
                 "additionalProperties": false,
                 "required": [
-                    "max_infer_iters",
                     "model",
                     "instructions",
                     "enable_session_persistence"
@@ -4217,7 +4215,6 @@
                     "input_messages",
                     "steps",
                     "output_message",
-                    "output_attachments",
                     "started_at"
                 ],
                 "description": "A single turn in an interaction with an Agentic System."
diff --git a/docs/_static/llama-stack-spec.yaml b/docs/_static/llama-stack-spec.yaml
index dbae7dbb2..2953f1b69 100644
--- a/docs/_static/llama-stack-spec.yaml
+++ b/docs/_static/llama-stack-spec.yaml
@@ -1486,7 +1486,6 @@ components:
         - role
         - content
         - stop_reason
-        - tool_calls
       description: >-
         A message containing the model's (assistant) response in a chat conversation.
     GrammarResponseFormat:
@@ -2361,7 +2360,6 @@ components:
           $ref: '#/components/schemas/ResponseFormat'
       additionalProperties: false
       required:
-        - max_infer_iters
         - model
         - instructions
         - enable_session_persistence
@@ -2718,7 +2716,6 @@ components:
         - input_messages
         - steps
         - output_message
-        - output_attachments
         - started_at
       description: >-
         A single turn in an interaction with an Agentic System.
diff --git a/llama_stack/apis/agents/agents.py b/llama_stack/apis/agents/agents.py
index 50bea3d55..38c6b5561 100644
--- a/llama_stack/apis/agents/agents.py
+++ b/llama_stack/apis/agents/agents.py
@@ -116,7 +116,7 @@ class Turn(BaseModel):
     ]
     steps: List[Step]
     output_message: CompletionMessage
-    output_attachments: List[Attachment] = Field(default_factory=list)
+    output_attachments: Optional[List[Attachment]] = Field(default_factory=list)
 
     started_at: datetime
     completed_at: Optional[datetime] = None
@@ -156,7 +156,7 @@ class AgentConfigCommon(BaseModel):
     tool_choice: Optional[ToolChoice] = Field(default=ToolChoice.auto)
     tool_prompt_format: Optional[ToolPromptFormat] = Field(default=None)
 
-    max_infer_iters: int = 10
+    max_infer_iters: Optional[int] = 10
 
 
 @json_schema_type
diff --git a/llama_stack/apis/inference/inference.py b/llama_stack/apis/inference/inference.py
index d4f13d65c..4e095e831 100644
--- a/llama_stack/apis/inference/inference.py
+++ b/llama_stack/apis/inference/inference.py
@@ -142,7 +142,7 @@ class CompletionMessage(BaseModel):
     role: Literal["assistant"] = "assistant"
     content: InterleavedContent
     stop_reason: StopReason
-    tool_calls: List[ToolCall] = Field(default_factory=list)
+    tool_calls: Optional[List[ToolCall]] = Field(default_factory=list)
 
 
 Message = register_schema(