Descriptions:
Matt Wolfe walks through nine free skills and plugins that extend AI coding assistants like Claude Code, OpenAI Codex, and Cursor — explaining the distinction between a skill (a reusable .md instruction file that primes the model for a repeatable behavior) and a plugin (a bundle of skills, agents, hooks, and MCP servers installable via a single GitHub URL).
The first highlight is G-stack, a bundle from Y Combinator CEO Garry Tan that transforms Claude Code into a virtual engineering team — 23 specialists including a virtual CEO, engineering manager, security auditor running OWASP and STRIDE checks, and a QA lead with real browser access. Installation across Claude Code, Codex, and Cursor is demonstrated live. The video also covers Graphify, which converts personal notes and entire codebases into queryable knowledge graphs, enabling token-efficient querying without scanning every file. A follow-up tool called Understand Anything takes a similar graph approach to code comprehension.
All tools covered are free, work across major agent harnesses including VS Code and Microsoft Copilot, and are installable by pasting a GitHub URL directly into the agent’s prompt box. Viewers looking to build a more capable, consistent AI development workflow will find concrete starting points for each tool.
📺 Source: Matt Wolfe · Published June 24, 2026
🏷️ Format: Roundup
