Launched

Microsoft Copilot (Microsoft 365): Copilot extensibility – Developers can use TypeSpec as an authoring experience

Why it matters: Generally available

Developers can use TypeSpec as an authoring experience for declarative agents and API plugins in Teams Toolkit.

Target May CY2025Cloud WorldwidePlatform DeveloperSource updated 2025-09-26

Affected: Microsoft Copilot (Microsoft 365)