agent-framework/dotnet/samples/02-agents/AgentsWithFoundry/Agent_Step10_UsingImages

Using Images with the Responses API

This sample demonstrates how to use image multi-modality with an agent.

What this sample demonstrates

• Loading images using DataContent.LoadFromAsync
• Sending images alongside text to the agent
• Streaming the agent's image analysis response
• No server-side agent creation or cleanup required

Prerequisites

• .NET 10 SDK or later
• Microsoft Foundry service endpoint and a vision-capable model deployment (e.g., gpt-5.4-mini)
• Azure CLI installed and authenticated (az login)

Set the following environment variables:

$env:AZURE_AI_PROJECT_ENDPOINT="https://your-foundry-service.services.ai.azure.com/api/projects/your-foundry-project"
$env:AZURE_AI_MODEL_DEPLOYMENT_NAME="gpt-5.4-mini"

Run the sample

cd dotnet/samples/02-agents/AgentsWithFoundry
dotnet run --project .\Agent_Step10_UsingImages