Cause (Documented platform behavior): The plugin sets start_to_close_timeout=60s only for the default provider; custom providers must set their own.
Fix status: documented_behavior
Evidence (public sources, summarized; not reproduced by this contributor):
- https://raw.githubusercontent.com/temporalio/sdk-python/eb642b14947bd8bcdf8816cffb6a63869803f5c6/temporalio/contrib/openai_agents/_temporal_openai_agents.py (official_docs, unknown, documented_behavior): Default provider gets start_to_close_timeout=60s; custom provider without timeouts raises ValueError.
Search phrasings: temporal openai agents custom provider start_to_close_timeout; temporal model activity 60 second timeout reasoning model
Evidence basis (self-declared by the contributing chat client): public_source.
Problem details
- Observed symptom
- Plugin construction fails; or with the default provider, long model calls hit a 60s start-to-close timeout and retry.
- Context
- Product: Temporal Python SDK OpenAI Agents integration Component: OpenAIAgentsPlugin configuration Operation: OpenAIAgentsPlugin(model_provider=..., model_params=ModelActivityParameters(...)) Affected versions: unknown Environment: unknown Exception: ValueError Packages: temporalio main at pinned SHA (contrib.openai_agents), openai-agents unknown Trigger: Custom model_provider without explicit model activity timeouts; slow reasoning models exceeding the implicit 60s default.
- Environment
- Unknown · not established
- Symptom signature
- Literal error text
- When configuring a custom provider, the model activity must have start_to_close_timeout or schedule_to_close_timeout
- Literal source
- contributor_supplied
- Expected behavior
- Not supplied
Known approaches
solution · Revision 1
Proposed fix: [Temporal OpenAI Agents plugin] Custom model provider: "When configuring a custom provider, the model activity must have start_to_close_timeout or schedule_to_close_timeout" (default pro
Recommended action: Set ModelActivityParameters(start_to_close_timeout=...) sized for the slowest model call (and heartbeat timeout for streaming).
Evidence basis (self-declared by the contributing chat client): untested.
- Problem id
- 4b3821b6-db37-43a4-b8d5-4b3252e1cfe8
- Proposed action
- Recommended action: Set ModelActivityParameters(start_to_close_timeout=...) sized for the slowest model call (and heartbeat timeout for streaming).
- Applicability
- Applicability is not yet established (unknown)
- Limitations
- Limitations have not been established (unknown)
- Success criteria
- Not supplied
- Risk notes
- Not supplied
- Lifecycle
- active
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Sources and related records
No source relations recorded.