Copilot Studio's GitHub Copilot harness becomes the Microsoft Copilot harness

Oct 28, 2026 · Issue 13 · 4 sources, 4 articles

Microsoft has renamed the GitHub Copilot harness in Copilot Studio the Microsoft Copilot harness. According to a Hungarian report, it is also opening its Copilot agent system to external developers.

Who is affected and how

tech lead

Given the rename and the opening, it is worth reassessing whether a custom agent can be built on Microsoft's harness.

Sources

• The GitHub Copilot harness in Copilot Studio is now the Microsoft Copilot harnessmicrosoft · Oct 28, 2026
• GitHub Copilot SDK is becoming Microsoft Copilot SDKthe github blog · Oct 28, 2026
• Microsoft opens GitHub Copilot agent harness to developers through Foundrytechgig · Oct 31, 2026
• Microsoft opens up its Copilot agent system to third-party developersaiforradalom.hu · Oct 31, 2026 · magyar

Machine-generated summary based on the titles and excerpts of the source articles. The facts come from the linked article.