Microsoft Opens GitHub-Built Copilot Harness Through Foundry

Microsoft made its GitHub-built Copilot Harness available through Microsoft Foundry on 2026/10/28. The unified multi-model agent runtime was already used across Microsoft’s Copilot products. The Foundry availability lets developers build and run AI agents using the runtime.

Microsoft Makes Copilot Harness Available Through Foundry

Microsoft’s unified multi-model agent runtime, built by GitHub, is now available through Microsoft Foundry. Developers can use it to build and run AI agents.

Microsoft Uses the Runtime Across Copilot Products

The runtime was already used across Microsoft’s Copilot products before becoming available through Foundry.

Microsoft Foundry Copilot Harness Details

• The Copilot Harness is a unified multi-model agent runtime.
• The runtime was already used across Microsoft’s Copilot products.
• Microsoft Foundry now provides access to the runtime for building and running AI agents.
• The news item is dated 2026/10/28.

Frequently Asked Questions

What is Microsoft’s Copilot Harness?

It is a unified multi-model agent runtime built by GitHub and already used across Microsoft’s Copilot products.

What can developers do with the Copilot Harness through Microsoft Foundry?

Developers can use the runtime through Microsoft Foundry to build and run AI agents.