AI News Summary - February 21, 2026

Cursor Editor Launches Multi-Repository Context Engine

Cursor has released version 0.45 with a breakthrough multi-repo context system that allows AI assistants to understand dependencies across up to 10 linked repositories simultaneously. The feature uses a new semantic indexing approach that reduces token usage by 60% compared to naive context inclusion. Early adopters report significant improvements in microservices development workflows.

Anthropic Expands MCP Server Marketplace with 500+ Integrations

The Model Context Protocol ecosystem reached a major milestone with over 500 verified MCP servers now available in Anthropic's official marketplace. New enterprise-focused additions include SAP integration, Salesforce bidirectional sync, and a comprehensive AWS service connector. The marketplace now features automated security scanning and compliance certifications for enterprise deployments.

Open-Source Agent Framework "Conductor" Hits 1.0 Release

Conductor, a lightweight Python framework for building multi-agent systems, officially launched version 1.0 after 18 months in development. The framework emphasizes debugging and observability with built-in trace visualization and agent decision replay capabilities. It integrates natively with MCP and supports all major LLM providers with unified error handling.

GitHub Copilot Workspace Adds Natural Language PR Reviews

GitHub announced Copilot Workspace can now generate comprehensive pull request reviews in natural language, analyzing code changes for bugs, security issues, and style inconsistencies. The feature uses GPT-5's extended context window to review entire PR diffs up to 100,000 lines. Beta users report 40% reduction in review cycle time for large refactoring PRs.