VS Code: Major Agent Host Improvements and Mobile Updates
VS Code merged 20 pull requests on May 28th, 2026, featuring significant agent host customization improvements, mobile interface updates, and performance optimizations. Key changes include new custom agents service, Claude agent plugin support, and mobile multi-diff view capabilities.
Duration: PT2M14S
Transcript
Good morning. This is your VS Code developer briefing for May 28th, 2026.
Don Jayamanne merged a major chat enhancement introducing a custom agents service and mode synchronizer for agent host sessions. This adds the IAgentHostCustomAgentsService to manage custom agents and implements WorkbenchAgentHostCustomAgentsService for agent state handling. The change refactors agent customization and removes deprecated picker code.
Connor Peet merged two significant agent host updates. The first adopts a new customization protocol shape, reorganizing how containers carry discovered agents, skills, and MCP servers. The second improves MCP tool prefixes by preferring server-announced titles over configuration keys, reducing truncated prefixes for registry-style names.
Tyler Leonhardt merged Phase 11 of Claude agent support, adding full customizations and plugins functionality. This enables workbench-pushed customizations to flow through the agent plugin manager and projects server-side commands as Open Plugins-conformant bundles.
Peng Lyu merged mobile multi-diff view support from rebornix, introducing sticky per-file headers and async content loading with fold/unfold capabilities. The implementation includes new mobile overlay integration and Vite playground support.
Several performance and reliability improvements were also merged. Benjamin Simmonds addressed performance regressions by implementing transactions in session handling. Maggie Guo enhanced the search subagent to handle context window limit exceeded errors with proactive budget sizing and retry logic.
Additional merged changes include browser editor refactoring into feature contributions, pixel spinner adoption across session lists, and Windows CLI argument filtering fixes.
What's next: The agent host customization improvements should enable better plugin management workflows. The mobile multi-diff view opens new possibilities for code review on mobile devices.
That's your VS Code update for today.