Agentic AI, MCP, and spec-driven development: Top blog posts of 2025

In 2025, GitHub Blog highlighted major advancements and popular topics, focusing particularly on AI integration in coding through the GitHub Copilot, which evolved into a coding partner with features like Agent Mode that can autonomously iterate and correct its code within IDEs. The year saw the introduction of the GitHub Copilot coding agent, designed to autonomously handle tasks such as exploring repositories, writing code, and managing pull requests. A significant development was Agent HQ, a platform unifying various AI agents from companies like OpenAI and Google within GitHub, enhancing collaborative functionality. The blog also covered tutorials on maximizing GitHub Copilot's capabilities and introduced the MCP Model Context Protocol, facilitating communication among AI tools, alongside promoting spec-driven development with Spec Kit. Noteworthy stories included Git's 20th anniversary and discussions around open-source security challenges exemplified by the Log4Shell incident. The blog concluded by encouraging readers to explore further interviews, tutorials, and subscribe to the developer-focused newsletter for ongoing insights.