Update agents sdk dependency to latest.

pyproject.toml

@@ -26,7 +26,7 @@ opentelemetry = [
 ]
 pydantic = ["pydantic>=2.0.0,<3"]
 openai-agents = [
-    "openai-agents >= 0.1,<0.2",
+    "openai-agents >= 0.2.3,<0.3",
     "eval-type-backport>=0.2.2; python_version < '3.10'"
 ]
 

temporalio/contrib/openai_agents/_invoke_model_activity.py

@@ -160,7 +160,7 @@ def make_tool(tool: ToolInput) -> Tool:
                 raise UserError(f"Unknown tool type: {tool.name}")
 
         tools = [make_tool(x) for x in input.get("tools", [])]
-        handoffs = [
+        handoffs: list[Handoff[Any, Any]] = [
             Handoff(
                 tool_name=x.tool_name,
                 tool_description=x.tool_description,

tests/contrib/openai_agents/test_openai.py

@@ -45,7 +45,7 @@
 )
 from openai.types.responses.response_function_web_search import ActionSearch
 from openai.types.responses.response_prompt_param import ResponsePromptParam
-from pydantic import ConfigDict, Field
+from pydantic import ConfigDict, Field, TypeAdapter
 
 from temporalio import activity, workflow
 from temporalio.client import Client, WorkflowFailureError, WorkflowHandle
@@ -1778,3 +1778,22 @@ async def test_workflow_method_tools(client: Client):
                 execution_timeout=timedelta(seconds=10),
             )
             await workflow_handle.result()
+
+
+async def test_response_serialization(client: Client):
+    import json
+
+    from openai.types.responses.response_output_item import ImageGenerationCall
+
+    data = json.loads(
+        b'{"id": "msg_68757ec43348819d86709f0fcb70316301a1194a3e05b38c","type": "image_generation_call","status": "completed"}'
+    )
+    call = TypeAdapter(ImageGenerationCall).validate_python(data)
+    model_response = ModelResponse(
+        output=[
+            call,
+        ],
+        usage=Usage(),
+        response_id="",
+    )
+    encoded = await pydantic_data_converter.encode([model_response])