Harpreet contributed to the nvie/ai and vercel/ai repositories by enhancing developer documentation and streamlining code examples related to AI integration. Over two months, Harpreet updated the AI Gateway documentation in nvie/ai to ensure model string examples were accurate and consistent, reducing user confusion. In vercel/ai, Harpreet delivered a Node.js cookbook page demonstrating parallel tool calls with the AI SDK, refreshed the providers comparison table for clarity, and refactored the developer tools registry to simplify imports by removing the gateway() wrapper. These efforts, using TypeScript, Node.js, and Markdown, improved content organization and developer experience without introducing new bugs.