AI News for October 21, 2026

GitHub Copilot Workspace Adds Multi-Repository Context

GitHub announced that Copilot Workspace now supports simultaneous context from up to 10 repositories, enabling developers to work on microservices architectures more efficiently. The feature uses an improved embedding system that maintains semantic relationships across codebases while staying within token limits. Early access users report 40% faster development time on cross-service features.

Anthropic Releases MCP Server Discovery Protocol

Anthropic published the MCP Server Discovery Protocol (MCP-SDP) specification, allowing AI assistants to automatically find and connect to compatible local and remote MCP servers. The protocol includes security attestation and capability negotiation, addressing a major pain point in MCP adoption. Three major IDE vendors have committed to implementing MCP-SDP by year-end.

Open-Source Agent Framework "Conductor" Reaches 1.0

The Conductor agent framework hit version 1.0 after 18 months of development, offering built-in support for tool composition, long-running tasks, and human-in-the-loop workflows. Unlike existing frameworks, Conductor uses a declarative YAML-based approach for defining agent behaviors and includes observability tools out of the box. The project has already been adopted by several Fortune 500 companies for internal automation.

Claude Code Introduces "Diff Preview" Mode

Anthropic added a new Diff Preview mode to Claude Code that shows proposed changes alongside current code with AI-generated explanations for each modification. The feature helps developers understand the reasoning behind suggested refactors and catches potential issues before applying changes. Users can now approve or reject individual hunks while keeping context of the broader task.