Summary
GitHub made Agent Plugins 1.0 generally available, letting developers build a plugin once and run it across VS Code, Copilot CLI, the GitHub Copilot SDK, and the Copilot app. The same weekly release added CLI task management and command queueing, a /rewind undo, JetBrains persistent memory, and mid-session model switching in VS Code.
What changed
GitHub Copilot's Agent Plugins 1.0 reached general availability as a portable plugin format working across VS Code, Copilot CLI, the Copilot SDK, and the Copilot app. The release also added CLI /tasks and command queueing, a /rewind revert, JetBrains persistent memory plus Ollama support, and VS Code mid-session switching between Claude and Copilot models.
Why it matters
A single portable plugin format reduces fragmentation across Copilot's surfaces and pressures the wider agent ecosystem toward interoperable extensions, echoing MCP's portability goals but inside GitHub's own tooling. It strengthens Copilot's platform gravity while lowering the cost of building an agent capability once and shipping it everywhere.
Evidence excerpt
Build a plugin once and use it across compatible agent tools with Agent Plugins 1.0, now generally available in VS Code, Copilot CLI, the GitHub Copilot SDK, and the Copilot app.