Microsoft Open-Sources AI Engineer Coach for VS Code

Microsoft have open-sourced AI Engineer Coach.

It’s an extension for VS Code (also works in Cursor and Antigravity) that analyzes how you use AI agents for coding.

It reads local session logs from GitHub Copilot, Claude Code, Codex CLI, OpenCode, and Xcode.

The system evaluates your workflow across five categories: prompt quality, session hygiene, code review, tool mastery, and context management.

Inside are 45 rules for detecting antipatterns. For example: prompts without file context, mega-sessions that drift off-topic, auto-confirming terminal commands without a devcontainer, and burning expensive tokens on trivial requests.

Each issue it finds shows what went wrong, how to fix it, and provides a real example from your sessions.

The most interesting part is the rule engine. Each detector is a markdown file with a small expression language, so you can tune thresholds, write new rules, or describe them in plain language, and Copilot will scaffold the implementation itself.

There’s also Skill Finder. It finds recurring prompt patterns and turns them into reusable skills.

Everything runs locally: read-only, no telemetry.