Python: Added thread to AgentRunContext#1732
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Pull Request Overview
This PR adds a thread property to the AgentRunContext class, enabling middleware to observe and track thread state before and after agent execution. This addresses the need to access conversation history and monitor thread state changes across multiple agent runs.
Key Changes:
- Added
threadparameter toAgentRunContextto expose thread state to middleware - Updated middleware pipeline to pass thread context through the execution chain
- Added comprehensive tests validating thread behavior across multiple agent runs
Reviewed Changes
Copilot reviewed 6 out of 6 changed files in this pull request and generated 2 comments.
Show a summary per file
| File | Description |
|---|---|
python/packages/core/agent_framework/_middleware.py |
Added thread parameter to AgentRunContext class and updated middleware pipeline to pass thread context |
python/packages/core/tests/core/test_middleware.py |
Added unit tests for AgentRunContext initialization with thread and thread propagation through middleware pipeline |
python/packages/core/tests/core/test_middleware_with_agent.py |
Added integration test demonstrating thread behavior across multiple agent runs with message accumulation |
python/samples/getting_started/middleware/thread_behavior_middleware.py |
New sample demonstrating thread tracking in middleware across multiple runs |
python/samples/getting_started/middleware/README.md |
Added documentation entry for new thread behavior middleware sample |
python/samples/README.md |
Added reference to new thread behavior middleware sample |
Contributor
…leware.py Co-authored-by: Copilot <[email protected]>
ekzhu
approved these changes
Oct 27, 2025
ekzhu
reviewed
Oct 27, 2025
TaoChenOSU
approved these changes
Oct 28, 2025
arisng
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Feb 2, 2026
* Added thread to agent run context * Added sample * Update python/samples/getting_started/middleware/thread_behavior_middleware.py Co-authored-by: Copilot <[email protected]> * Small fix --------- Co-authored-by: Copilot <[email protected]>
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Motivation and Context
Resolve: #1504
Added
threadproperty toAgentRunContextclass to be able to observe thread state in middleware before and after agent execution.Contribution Checklist