What changed: The Copilot harness — built by GitHub engineers and adopted company-wide by Microsoft, powering Copilot Code, Copilot Studio, the GitHub Copilot app, the CLI, and VS Code — is now also offered through Microsoft Foundry. Developers and enterprise customers can build agents that reason, use tools, and complete long-running tasks, choosing from 20+ frontier models without switching harness or tech stack; the SDK can be downloaded or the harness can be run in the cloud via Foundry.
Who is affected
The source covers developers and enterprise customers building agents on Microsoft Foundry, as well as users of Copilot Code, Copilot Studio, the GitHub Copilot app, the CLI, and VS Code.
What it means for your business
For businesses using Microsoft Foundry or Copilot products, this means they can build their own AI agents and switch among 20+ models without changing the underlying harness.
What to do
If you use Microsoft Foundry or Copilot products, download the Copilot harness SDK and try building an agent, or evaluate running the harness in the cloud through Foundry.
When it takes effect
The source states the harness became available through Microsoft Foundry as of the announcement; the SDK can be downloaded or run in the cloud via Foundry.
