Python: Add background agent support to harness agent - #6155
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Eduard van Valkenburg (eavanvalkenburg) merged 3 commits intoJun 1, 2026
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Pull request overview
Adds opt-in background agent support to the Python harness agent so a harness-created agent can delegate work to background sub-agents via a BackgroundAgentsProvider.
Changes:
- Extend
create_harness_agent()/_assemble_context_providers()to acceptbackground_agentsandbackground_agents_instructions. - Automatically append
BackgroundAgentsProviderwhenbackground_agentsis provided and non-empty. - Add unit tests covering provider inclusion/default behavior and custom instructions wiring.
Reviewed changes
Copilot reviewed 2 out of 2 changed files in this pull request and generated 3 comments.
| File | Description |
|---|---|
| python/packages/core/agent_framework/_harness/_agent.py | Adds background_agents/background_agents_instructions parameters and wires BackgroundAgentsProvider into the harness context provider pipeline. |
| python/packages/core/tests/core/test_harness_agent.py | Adds tests verifying background-agent provider is (not) included by default, included when configured, and honors custom instructions. |
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Eduard van Valkenburg (eavanvalkenburg)
approved these changes
Jun 1, 2026
Eduard van Valkenburg (eavanvalkenburg)
enabled auto-merge
June 1, 2026 15:17
Tao Chen (TaoChenOSU)
approved these changes
Jun 1, 2026
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Motivation and Context
#6154
Description
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