OpenAI Agents (Python) Files

Key Changes

This minor release does not introduce a breaking change, but it includes a notable Realtime default update plus new MCP capabilities and runtime stability fixes. Highlights are:

• The default websocket Realtime model is now gpt-realtime-1.5, so new Realtime agent setups use the newer model without extra configuration.
• MCPServer now exposes list_resources(), list_resource_templates(), and read_resource(), and MCPServerStreamableHttp now exposes session_id so streamable HTTP sessions can be resumed across reconnects or stateless workers.
• Chat Completions integrations can now opt into reasoning-content replay via should_replay_reasoning_content, improving provider-specific reasoning/tool-call continuity for adapters such as LiteLLM/DeepSeek.
• Fixed several runtime and session edge cases, including concurrent first writes in SQLAlchemySession, compaction requests with orphaned assistant message IDs after reasoning stripping, remove_all_tools() leaving MCP/reasoning items behind, and a race in the function-tool batch executor.

What's Changed

• fix: default realtime websocket model to gpt-realtime-1.5 by @seratch in https://github.com/openai/openai-agents-python/pull/2737
• fix: [#2729] avoid eager-task race in function tool batch executor by @seratch in https://github.com/openai/openai-agents-python/pull/2731
• fix: preserve streamed output guardrail tripwires in the run loop by @seratch in https://github.com/openai/openai-agents-python/pull/2758
• fix(compaction): strip orphaned assistant message IDs after reasoning removal by @Ratnaditya-J in https://github.com/openai/openai-agents-python/pull/2728
• feat: [#2669] add opt-in reasoning content replay for chat completion models by @seratch in https://github.com/openai/openai-agents-python/pull/2670
• fix: remove_all_tools missing MCP and reasoning item types by @joaquinhuigomez in https://github.com/openai/openai-agents-python/pull/2700
• feat(mcp): expose list_resources, list_resource_templates, and read_resource on MCPServer by @adityasingh2400 in https://github.com/openai/openai-agents-python/pull/2721
• feat(mcp): expose session_id on MCPServerStreamableHttp by @adityasingh2400 in https://github.com/openai/openai-agents-python/pull/2708
• fix(memory): make SQLAlchemySession first writes race-safe by @FelmonFekadu in https://github.com/openai/openai-agents-python/pull/2725

Documentation & Other Changes

• docs: add PromptLayer integration link to tracing documentation by @adagradschool in https://github.com/openai/openai-agents-python/pull/2718
• docs: update translated document pages by @github-actions[bot] in https://github.com/openai/openai-agents-python/pull/2719
• docs: highlight gpt-realtime-1.5 in public docs by @teri-oai in https://github.com/openai/openai-agents-python/pull/2724
• docs: update translated document pages by @github-actions[bot] in https://github.com/openai/openai-agents-python/pull/2726
• docs: clarify cancel-after-turn streaming guidance by @FelmonFekadu in https://github.com/openai/openai-agents-python/pull/2710
• docs: update translated document pages by @github-actions[bot] in https://github.com/openai/openai-agents-python/pull/2730
• docs: rebrand Keywords AI to Respan by @drPod in https://github.com/openai/openai-agents-python/pull/2757
• chore: add runtime behavior probe skill by @seratch in https://github.com/openai/openai-agents-python/pull/2743
• chore: parallelize code-change-verification after format by @seratch in https://github.com/openai/openai-agents-python/pull/2751
• Release 0.13.0 by @github-actions[bot] in https://github.com/openai/openai-agents-python/pull/2738

New Contributors

• @adagradschool made their first contribution in https://github.com/openai/openai-agents-python/pull/2718
• @teri-oai made their first contribution in https://github.com/openai/openai-agents-python/pull/2724
• @FelmonFekadu made their first contribution in https://github.com/openai/openai-agents-python/pull/2725
• @Ratnaditya-J made their first contribution in https://github.com/openai/openai-agents-python/pull/2728
• @joaquinhuigomez made their first contribution in https://github.com/openai/openai-agents-python/pull/2700
• @drPod made their first contribution in https://github.com/openai/openai-agents-python/pull/2757

Full Changelog: https://github.com/openai/openai-agents-python/compare/v0.12.5...v0.13.0