copilot

GitHub cut Copilot's default toolset from 40 to 13 tools and built embedding-guided routing. The result: 400ms faster responses and 94.5% tool coverage. Here's how they did it—and why more tools often means worse performance.

Analysis of 2,500+ repos reveals what makes agents.md files actually work: executable commands, code examples over prose, clear boundaries, and exact tech stack details. Most fail because they're too vague.

GitHub's guide to writing Copilot code review instructions that actually work. Learn what to include, what to avoid, and how to structure files for consistent automated reviews.

GitHub assigns Copilot real issues in their core repo. It opens PRs, fixes bugs, and ships features. Here's what a month of Copilot PRs revealed about AI in production workflows.