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* .NET: Add a TODO AIContextProvider (#5233) * Add a TODO AIContextProvider * Add unit tests * Address PR comments * Address PR comments * Fix test after removing one tool * .NET: Add a ModeProvider for managing agent modes (#5247) * Add a ModeProvider for managing agent modes * Fix typo * Fix typo * Fix typo * Address PR comments * .NET: Add sample to show how to build a harness (#5268) * Add sample to show how to build a harness * Improve sample * Sample max output tokens and model * Fix encoding * Fix model name in readme * Address PR comments * .NET: Add context window size compaction strategy for harness (#5304) * Add context window size compaction strategy for harness * Apply suggestions from code review Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com> * Address PR comments --------- Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com> * .NET: Add a file memory provider (#5315) * Add a file memory provider * Address PR comments * Fix review comments. * Add additional unit tests * Addressing PR comments. * .NET: Harness: Improve prompts and add FileSystem store (#5365) * Harness: Improve prompts and add FileSystem store * Address PR comments * .NET: Harness: Improve path validation (#5404) * Harness: Improve path validation * Address PR comments * .NET: Add always approve helpers, improve sample and fix bug (#5451) * Add always approve helpers, improve sample and fix bug * Address PR comments * .NET: Make Todo, Mode and FileMemory providers more configurable (#5477) * Make Todo, Mode and FileMemory providers more configurable * Address PR comments. * .NET: Add subagents provider and sample (#5518) * Add subagents provider and sample * Addressing PR comments. * .NET: Harness filememory index plus instructions consistency (#5540) * Add FileMemoryProvider index and improve instruction consistency * Address PR comments. * Address PR comments * Address PR comments. * Apply suggestion from @rogerbarreto Co-authored-by: Roger Barreto <19890735+rogerbarreto@users.noreply.github.com> --------- Co-authored-by: Roger Barreto <19890735+rogerbarreto@users.noreply.github.com> * .NET: Refactor harness console to be more extensible and easy to understand with better UX (#5573) * Refactor harness console to be more extensible and easy to understand with better UX. * Fix formatting issues. * Allow multiple clarifications in one response * Address PR comments * .NET: Add FileAccessProvdider and concurrency fix for FileMemoryProvider (#5583) * Add FileAccessProvdider and concurrency fix for FileMemoryProvider * Address PR comments --------- Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com> Co-authored-by: Roger Barreto <19890735+rogerbarreto@users.noreply.github.com>
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Harness Step 02 — SubAgents (Stock Price Research)
This sample demonstrates how to use the SubAgentsProvider to delegate work from a parent agent to sub-agents.
What It Does
A parent agent receives a list of stock tickers and uses a web-search sub-agent to find the closing price for each ticker on December 31, 2025. The sub-tasks run concurrently, and results are presented in a summary table.
Architecture
┌─────────────────────────────────┐
│ StockPriceResearcher │
│ (Parent Agent) │
│ │
│ SubAgentsProvider │
│ ├─ SubAgents_StartTask │
│ ├─ SubAgents_WaitFor... │
│ ├─ SubAgents_GetTaskResults │
│ └─ ... │
└────────────┬────────────────────┘
│ delegates to
▼
┌─────────────────────────────────┐
│ WebSearchAgent │
│ (Sub-Agent) │
│ │
│ Tools: │
│ └─ web_search (Foundry) │
└─────────────────────────────────┘
Prerequisites
- An Azure AI Foundry endpoint with an OpenAI model deployment
- Set the following environment variables:
AZURE_FOUNDRY_OPENAI_ENDPOINT— Your Foundry OpenAI endpoint URLAZURE_AI_MODEL_DEPLOYMENT_NAME— Model deployment name (defaults togpt-5.4)
Running the Sample
cd dotnet/samples/02-agents/Harness/Harness_Step02_Research_WithSubAgents
dotnet run
When prompted, enter a list of stock tickers such as:
BAC, MSFT, BA
The parent agent will delegate each ticker lookup to the web search sub-agent concurrently and present the results in a table.