Agent Extensibility & Claude Integration

GitHub Copilot v1.109 now offers public preview support for Claude agents powered by Anthropic's official Claude Agent SDK. This integration allows developers to delegate complex tasks directly from their GitHub Copilot subscription using Claude models, seamlessly within Visual Studio Code. Additionally, richer chat interactions with MCP (Model Context Protocol) apps enable more tool-driven, interactive experiences.

Enhanced Chat & Reasoning

The release brings significant UX improvements to Copilot Chat:

• Faster streaming responsiveness for snappier, more responsive conversations
• Higher-quality reasoning results using thinking tokens to improve reliability and task execution
• Better visibility into agent reasoning with agents asking clarifying questions instead of making assumptions
• Revamped inline editor chat for more natural, in-context coding assistance

Multi-Agent Orchestration & Session Management

Developers can now seamlessly coordinate work across multiple agent types:

• Unified agent management across Copilot, Claude, local agents, background agents, and cloud agents
• Parallel subagent execution for faster task completion
• Improved session visibility with status indicators showing which sessions need attention
• Seamless handoff allowing developers to jump into agent work without disrupting momentum

Agent Customization & Intelligence

New capabilities for tailoring agent behavior to team needs:

• Agent orchestrations for building repeatable, team-specific workflows
• Agent Skills combined with org-wide customization ensure consistent outcomes across developers
• Copilot Memory helps agents retain relevant context across interactions for smarter task handling
• Faster code search via external indexing improves retrieval speed in large repositories

Security & Control Improvements

The release prioritizes safety in agent-driven development:

• Terminal command sandboxing (experimental, macOS/Linux) increases confidence when agents propose or execute commands
• Effective auto-approval rules improve safety and control while reducing unnecessary user prompts
• Enhanced terminal lifecycle management with timeout, await, and kill capabilities for better control over background commands

Additional VS Code Updates

Beyond Copilot enhancements, this release includes general VS Code productivity improvements: integrated browser for testing apps without leaving the editor, terminal quality-of-life enhancements, coding improvements, and new extension APIs.