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.NET: Adding default providers and tools to HarnessAgent (#5896)

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* Adding default providers and tools to HarnessAgent

* Address PR comments

* Add further comments to clarify certain setings.

* Apply suggestion from @SergeyMenshykh

Co-authored-by: SergeyMenshykh <68852919+SergeyMenshykh@users.noreply.github.com>

---------

Co-authored-by: SergeyMenshykh <68852919+SergeyMenshykh@users.noreply.github.com>
This commit is contained in:
westey
2026-05-18 10:07:16 +00:00
committed by GitHub
co-authored by SergeyMenshykh
parent a60e541c9a
commit ddc0fcf81f
13 changed files with 1154 additions and 188 deletions
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dotnet/samples/02-agents/Harness/Harness_Step03_DataProcessing/Program.cs
+12 -11
View File
@@ -1,10 +1,12 @@
// Copyright (c) Microsoft. All rights reserved.
// This sample demonstrates how to use a HarnessAgent with the FileAccessProvider
// This sample demonstrates how to use a HarnessAgent with the default FileAccessProvider
// to give an agent access to a folder of CSV data files. The agent can read, analyze,
// and extract information from the data, then write results back as new files.
//
// The sample includes a pre-populated `data/` folder with sales transaction data.
// The sample includes a pre-populated `working/` folder with sales transaction data.
// The HarnessAgent's default FileAccessProvider uses `{cwd}/working` as its working directory,
// which matches this sample's folder layout.
// Ask the agent to analyze the data, produce summaries, or create new output files.
//
// Special commands:
@@ -27,10 +29,6 @@ var deploymentName = Environment.GetEnvironmentVariable("AZURE_AI_MODEL_DEPLOYME
const int MaxContextWindowTokens = 1_050_000;
const int MaxOutputTokens = 128_000;
// Point the file store at the data/ folder that ships with the sample.
var dataFolder = Path.Combine(AppContext.BaseDirectory, "data");
var fileStore = new FileSystemAgentFileStore(dataFolder);
var instructions =
"""
You are a data analyst assistant. You have access to a folder of data files via the FileAccess_* tools.
@@ -56,7 +54,9 @@ var instructions =
- Always explain what you learned and what you are going to do next between tool calls, so the user can follow along with your thought process.
""";
// Create the chat client from the OpenAI provider.
// Create the agent using AsHarnessAgent. The FileAccessStore is explicitly set to the
// sample's working/ folder (copied to the output directory) so it works regardless of cwd.
// Unused features are disabled.
AIAgent agent =
new OpenAIClient(
new BearerTokenPolicy(new DefaultAzureCredential(), "https://ai.azure.com/.default"),
@@ -71,10 +71,11 @@ AIAgent agent =
{
Name = "DataAnalyst",
Description = "A data analyst assistant that reads, analyzes, and processes data files.",
AIContextProviders =
[
new FileAccessProvider(fileStore),
],
FileAccessStore = new FileSystemAgentFileStore(Path.Combine(AppContext.BaseDirectory, "working")),
DisableTodoProvider = true,
DisableAgentModeProvider = true,
DisableFileMemory = true, // If enabled, this would allow the agent to store memories as files in a directory associated with the current session
DisableWebSearch = true,
ChatOptions = new ChatOptions
{
Instructions = instructions,