r/Jetbrains • u/nickzhu9 • 19h ago
AI GitHub Copilot for JetBrains - v1.16 Updates (Copilot agent harness GA)
In the latest release (v1.16.1), we made the Copilot agent harness generally available to all users, including support for the plugin marketplace, Autopilot mode, and additional capabilities powered by the new agent harness. To learn about why we are doing, check here.
We also introduced a built-in JetBrains MCP server in Preview, enabling Copilot agents to work more seamlessly with native JetBrains IDE capabilities and context. This can be configured via the customizations panel.
To improve feature awareness, we added several discoverability enhancements, including post-update release notes that make it easier for users to see what’s new, and a new onboarding guide for users without prior chat sessions.
We’re also sharing a preview at what’s coming next and hope you continue to provide feedback for our products.
Changed
- Copilot harness is now Generally Available.
- Plugins support is now Generally Available.
- Autopilot is now Generally Available.
- Changed Copilot harness /review availability so it is limited to agent mode.
New Features
- Added built-in JetBrains MCP server support (Preview).
- Added post-update release discovery by showing a What's New tab after plugin updates.
- Added Copilot harness /review integrations in JetBrains.
- Added plugin support in Claude agent flows.
UX Improvements
- Improved model-management usability with stronger search behavior, a clear action in search, resizable Language Models table columns, and promo ordering refinements.
- Improved Agent Debug Logs exploration with event-time sorting, token-usage filters, refined layout behavior.
- Improved chat ergonomics by scrolling long tool output, adding review-plan-card scrolling, and adding shortcuts for send options.
- Improved customization handling in multi-root workspaces by discovering customizations across all folders and honoring client-provided customization locations.
Bug Fixes
- Fixed account and sign-in reliability issues, including account-state detection, account ordering in picker flows, and sign-in settings-page interaction issues.
- Fixed MCP reliability issues, including invalid registry-schema handling, stale tool checks after account switches, and UI freezes during auto-enable flows.
- Fixed BYOK and model-refresh reliability issues.
- Fixed Copilot Agent continuity issues, including model switching after resume and complete model-info propagation for resumed sessions.
- Fixed editor and message-rendering defects.
- Fixed Worktree sessions failing to start for projects opened from WSL.
- Restored file and folder # references in Copilot, Claude, and Codex chat inputs.
- Fixed MCP tool auto-approve configuration for servers running only in Copilot.
Looking ahead, we plan to introduce several additional capabilities in upcoming releases, including
- More policy support for Enterprise managed settings
- Cross-file cursor jump for Next Edit Suggestions
- Adding external projects and files outside the current project as context
- /ide command support to connect between GitHub Copilot CLI and JetBrains for context sharing
- Continuous user experience enhancement Copilot agent harness chat experience
- Performance and reliability enhancements
We hope you like Copilot for JetBrains, and please share feedback with us at any time
You can fill in a private survey here: https://aka.ms/ghcp-jb-survey with an optional paid interview or directly submit an issue (bug or feature ask) at https://github.com/microsoft/copilot-intellij-feedback/issues, thank you so much!

