Copilot e82d9f5e45 .NET: Add AIAgent implementation for GitHub Copilot SDK (#3395)
* Initial plan

* Add GitHub Copilot SDK AIAgent implementation with tests

Co-authored-by: westey-m <164392973+westey-m@users.noreply.github.com>

* Add projects to solution and fix sample imports

Co-authored-by: westey-m <164392973+westey-m@users.noreply.github.com>

* Improve pragma comment clarity in GithubCopilotAgentThread

Co-authored-by: westey-m <164392973+westey-m@users.noreply.github.com>

* Address PR feedback: internal constructor/setter, remove CopilotClientOptions ctor, streaming improvements, better sample, container warning

Co-authored-by: westey-m <164392973+westey-m@users.noreply.github.com>

* Add ownsClient parameter to allow caller control over client disposal

Co-authored-by: westey-m <164392973+westey-m@users.noreply.github.com>

* Fix unit tests by removing await using to avoid StreamJsonRpc disposal issues

Co-authored-by: westey-m <164392973+westey-m@users.noreply.github.com>

* Fix file encoding: add UTF-8 BOM to Program.cs

Co-authored-by: westey-m <164392973+westey-m@users.noreply.github.com>

* Fix dotnet-format errors: UTF-8 BOM, remove unused logger, add this qualifier, remove unnecessary usings

Co-authored-by: westey-m <164392973+westey-m@users.noreply.github.com>

* Fix test file encoding and remove redundant cast

Co-authored-by: westey-m <164392973+westey-m@users.noreply.github.com>

* Add AsAIAgent extension methods for CopilotClient with tests

Co-authored-by: westey-m <164392973+westey-m@users.noreply.github.com>

* Remove IL suppressions, use TryComplete for channel writer, remove TCS from streaming

Co-authored-by: stephentoub <2642209+stephentoub@users.noreply.github.com>

* Keep session alive across calls, add tools overload, add tests

Co-authored-by: stephentoub <2642209+stephentoub@users.noreply.github.com>

* Revert session persistence changes - sessions dispose after each call

Co-authored-by: stephentoub <2642209+stephentoub@users.noreply.github.com>

* Add CreatedAt property mapping using DateTimeOffset.UtcNow

Co-authored-by: stephentoub <2642209+stephentoub@users.noreply.github.com>

* Add DataContent handling via temp files and attachments

Co-authored-by: stephentoub <2642209+stephentoub@users.noreply.github.com>

* Fix formatting: remove extra indentation, simplify Path references, remove unused using

Co-authored-by: stephentoub <2642209+stephentoub@users.noreply.github.com>

* Refactor: extract helper methods to reduce duplication in DataContent handling

Co-authored-by: stephentoub <2642209+stephentoub@users.noreply.github.com>

* Updated sample and session config mapping

* Added instructions parameter

* Updated README

* Address PR feedback: reorder params, optimize dictionary, update prefix, remove InternalsVisibleTo, update sample prompts, add defaults

Co-authored-by: stephentoub <2642209+stephentoub@users.noreply.github.com>

* Remove StreamJsonRpc reference from sample project

Co-authored-by: stephentoub <2642209+stephentoub@users.noreply.github.com>

* Fix parameter ordering: tools now after description, rename to s_mediaTypeExtensions, simplify extension logic, update prompts, fix test expectations

Co-authored-by: stephentoub <2642209+stephentoub@users.noreply.github.com>

* Fix streaming prompt: change Python to C# for Fibonacci example

Co-authored-by: stephentoub <2642209+stephentoub@users.noreply.github.com>

* Handle all SDK events, add UsageContent support, fix model name, remove AutoStart, add using for Channels

Co-authored-by: stephentoub <2642209+stephentoub@users.noreply.github.com>

* Resolved build errors

* Addressed comments

* Small fix

* Addressed comment

* Small fix

* Addressed comments

* Added integration tests

* Small update

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: westey-m <164392973+westey-m@users.noreply.github.com>
Co-authored-by: Dmytro Struk <13853051+dmytrostruk@users.noreply.github.com>
Co-authored-by: stephentoub <2642209+stephentoub@users.noreply.github.com>
e82d9f5e45 · 2026-01-27 18:51:56 +00:00
1,292 Commits
2026-01-27 18:16:55 +00:00
2025-12-08 21:30:21 +00:00
2025-10-30 20:29:01 +00:00
2025-04-28 12:54:43 -07:00
2025-04-28 12:54:42 -07:00

Microsoft Agent Framework

Welcome to Microsoft Agent Framework!

Microsoft Azure AI Foundry Discord MS Learn Documentation PyPI NuGet

Welcome to Microsoft's comprehensive multi-language framework for building, orchestrating, and deploying AI agents with support for both .NET and Python implementations. This framework provides everything from simple chat agents to complex multi-agent workflows with graph-based orchestration.

Watch the full Agent Framework introduction (30 min)

Watch the full Agent Framework introduction (30 min)

📋 Getting Started

📦 Installation

Python

pip install agent-framework --pre
# This will install all sub-packages, see `python/packages` for individual packages.
# It may take a minute on first install on Windows.

.NET

dotnet add package Microsoft.Agents.AI

📚 Documentation

Still have questions? Join our weekly office hours or ask questions in our Discord channel to get help from the team and other users.

Highlights

  • Graph-based Workflows: Connect agents and deterministic functions using data flows with streaming, checkpointing, human-in-the-loop, and time-travel capabilities
  • AF Labs: Experimental packages for cutting-edge features including benchmarking, reinforcement learning, and research initiatives
  • DevUI: Interactive developer UI for agent development, testing, and debugging workflows

See the DevUI in action

See the DevUI in action (1 min)

💬 We want your feedback!

Quickstart

Basic Agent - Python

Create a simple Azure Responses Agent that writes a haiku about the Microsoft Agent Framework

# pip install agent-framework --pre
# Use `az login` to authenticate with Azure CLI
import os
import asyncio
from agent_framework.azure import AzureOpenAIResponsesClient
from azure.identity import AzureCliCredential


async def main():
    # Initialize a chat agent with Azure OpenAI Responses
    # the endpoint, deployment name, and api version can be set via environment variables
    # or they can be passed in directly to the AzureOpenAIResponsesClient constructor
    agent = AzureOpenAIResponsesClient(
        # endpoint=os.environ["AZURE_OPENAI_ENDPOINT"],
        # deployment_name=os.environ["AZURE_OPENAI_RESPONSES_DEPLOYMENT_NAME"],
        # api_version=os.environ["AZURE_OPENAI_API_VERSION"],
        # api_key=os.environ["AZURE_OPENAI_API_KEY"],  # Optional if using AzureCliCredential
        credential=AzureCliCredential(), # Optional, if using api_key
    ).create_agent(
        name="HaikuBot",
        instructions="You are an upbeat assistant that writes beautifully.",
    )

    print(await agent.run("Write a haiku about Microsoft Agent Framework."))

if __name__ == "__main__":
    asyncio.run(main())

Basic Agent - .NET

Create a simple Agent, using OpenAI Responses, that writes a haiku about the Microsoft Agent Framework

// dotnet add package Microsoft.Agents.AI.OpenAI --prerelease
using System;
using OpenAI;

// Replace the <apikey> with your OpenAI API key.
var agent = new OpenAIClient("<apikey>")
    .GetOpenAIResponseClient("gpt-4o-mini")
    .CreateAIAgent(name: "HaikuBot", instructions: "You are an upbeat assistant that writes beautifully.");

Console.WriteLine(await agent.RunAsync("Write a haiku about Microsoft Agent Framework."));

Create a simple Agent, using Azure OpenAI Responses with token based auth, that writes a haiku about the Microsoft Agent Framework

// dotnet add package Microsoft.Agents.AI.OpenAI --prerelease
// dotnet add package Azure.Identity
// Use `az login` to authenticate with Azure CLI
using System;
using OpenAI;

// Replace <resource> and gpt-4o-mini with your Azure OpenAI resource name and deployment name.
var agent = new OpenAIClient(
    new BearerTokenPolicy(new AzureCliCredential(), "https://ai.azure.com/.default"),
    new OpenAIClientOptions() { Endpoint = new Uri("https://<resource>.openai.azure.com/openai/v1") })
    .GetOpenAIResponseClient("gpt-4o-mini")
    .CreateAIAgent(name: "HaikuBot", instructions: "You are an upbeat assistant that writes beautifully.");

Console.WriteLine(await agent.RunAsync("Write a haiku about Microsoft Agent Framework."));

More Examples & Samples

Python

.NET

Contributor Resources

Important Notes

If you use the Microsoft Agent Framework to build applications that operate with third-party servers or agents, you do so at your own risk. We recommend reviewing all data being shared with third-party servers or agents and being cognizant of third-party practices for retention and location of data. It is your responsibility to manage whether your data will flow outside of your organization's Azure compliance and geographic boundaries and any related implications.

Languages
Python 50.9%
C# 45.8%
TypeScript 2.7%
HTML 0.2%
PowerShell 0.1%
Other 0.1%