workflow consume/execute from code

[walnut-co]

I created a workflow in new azure foundry portal. Is there a way to call this workflow from c# or code ?

[leestott]

Hi @walnut-co

How you call a workflow created in the new Azure AI Foundry portal from C# depends on how the workflow was built.

If the workflow is created using Azure Logic Apps (for example, a Foundry workflow that starts with an “When an HTTP request is received” trigger and ends with a Response action), the workflow automatically exposes an HTTPS endpoint. This is the simplest and recommended way to call a Foundry workflow from C#.

In this case, your C# application just performs an HTTP POST to the Logic App trigger URL using HttpClient, sending JSON as the request body. No Foundry-specific SDK is required. See: https://learn.microsoft.com/en-us/azure/logic-apps/add-agent-action-create-run-workflow
Related (if you want the Foundry workflows feature itself, not Logic Apps actions):
https://learn.microsoft.com/en-us/azure/ai-foundry/agents/concepts/workflow?view=foundry

If the workflow is a Foundry-hosted workflow or multi-agent workflow created directly in the new Foundry workflow builder, invocation is currently handled through Foundry UI execution, Agent Service, or REST-based agent calls, depending on the workflow type. Direct C# SDK invocation of workflows is limited or preview-only and not guaranteed across all workflow types.

In these cases, you typically invoke the workflow through:

• Microsoft Foundry Agent Service REST APIs, or
• A workflow that is surfaced behind an HTTP-triggered integration (such as Logic Apps)

See:
https://learn.microsoft.com/rest/api/aifoundry/aiagents
https://learn.microsoft.com/rest/api/aifoundry/
https://microsoftlearning.github.io/mslearn-ai-agents/Instructions/08-build-workflow-ms-foundry.html

So Best Practice Tips

• If you need a stable, production-ready way to call a Foundry workflow from C#, use a Logic App with an HTTP trigger and call it via HttpClient.
• Foundry-native workflows and hosted multi-agent workflows are invoked via Agent Service / REST, not a simple C# workflow SDK call.

Hope this helps.