Run Claude Code, Codex, and Gemini side by side — each in its own git worktree

VS Code extension for spec-driven development — manage specs, workflows, and steering docs for AI CLI tools (Claude Code, Gemini CLI, Copilot CLI)

28 eval-informed mental models and critical-thinking skills for Claude Code, GitHub Copilot, Codex, Cursor, and other Agent Skills-compatible tools

Ultra-fast token & cost tracker for LLM Token Usage (e.g. Claude Code)