[Release] openai/openai-agents-python v0.13.0: v0.13.0

OpenAI Agents Python v0.13.0 is a minor release that updates the default Realtime websocket model to gpt-realtime-1.5, expands MCP server capabilities with resource management and session tracking, and introduces opt-in reasoning content replay for chat completions. The release includes critical runtime stability fixes for concurrent writes, tool removal edge cases, and batch executor races, with no breaking changes.

Key Points

• •Default Realtime websocket model upgraded to gpt-realtime-1.5 for improved performance without requiring configuration changes
• •MCPServer now exposes list_resources(), list_resource_templates(), and read_resource() methods for enhanced resource management
• •MCPServerStreamableHttp exposes session_id to enable resumable HTTP sessions across reconnects and stateless workers
• •New opt-in reasoning_content_replay feature via should_replay_reasoning_content for improved provider-specific reasoning and tool-call continuity
• •Fixed concurrent first-write race condition in SQLAlchemySession for thread-safe memory operations
• •Resolved remove_all_tools() bug that left orphaned MCP and reasoning items in the system
• •Fixed compaction logic to strip orphaned assistant message IDs after reasoning removal
• •Corrected function-tool batch executor race condition that could cause eager-task conflicts
• •Preserved streamed output guardrail tripwires in the run loop to maintain safety constraints
• •Added runtime behavior probe skill and improved CI/CD with parallelized code-change verification

Workflow Diagram

Concepts